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Zeitschriftenartikel zum Thema „Perovskity“

Autor: Grafiati

Veröffentlicht am 4. Juni 2021

Zuletzt aktualisiert am 3. Februar 2022

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1

Meyer, Edson, Dorcas Mutukwa, Nyengerai Zingwe, and Raymond Taziwa. "Lead-Free Halide Double Perovskites: A Review of the Structural, Optical, and Stability Properties as Well as Their Viability to Replace Lead Halide Perovskites." Metals 8, no. 9 (2018): 667. http://dx.doi.org/10.3390/met8090667.

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Perovskite solar cells employ lead halide perovskite materials as light absorbers. These perovskite materials have shown exceptional optoelectronic properties, making perovskite solar cells a fast-growing solar technology. Perovskite solar cells have achieved a record efficiency of over 20%, which has superseded the efficiency of Gräztel dye-sensitized solar cell (DSSC) technology. Even with their exceptional optical and electric properties, lead halide perovskites suffer from poor stability. They degrade when exposed to moisture, heat, and UV radiation, which has hindered their commercializat

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Yang, Bilin, Yujun Xie, Pan Zeng, Yurong Dong, Qiongrong Ou, and Shuyu Zhang. "Tightly Compacted Perovskite Laminates on Flexible Substrates via Hot-Pressing." Applied Sciences 10, no. 6 (2020): 1917. http://dx.doi.org/10.3390/app10061917.

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Pressure and temperature are powerful tools applied to perovskites to achieve recrystallization. Lamination, based on recrystallization of perovskites, avoids the limitations and improves the compatibility of materials and solvents in perovskite device architectures. In this work, we demonstrate tightly compacted perovskite laminates on flexible substrates via hot-pressing and investigate the effect of hot-pressing conditions on the lamination qualities and optical properties of perovskite laminates. The optimized laminates achieved at a temperature of 90 °C and a pressure of 10 MPa could sust

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Mitchell, Roger H., Mark D. Welch, and Anton R. Chakhmouradian. "Nomenclature of the perovskite supergroup: A hierarchical system of classification based on crystal structure and composition." Mineralogical Magazine 81, no. 3 (2017): 411–61. http://dx.doi.org/10.1180/minmag.2016.080.156.

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AbstractOn the basis of extensive studies of synthetic perovskite-structured compounds it is possible to derive a hierarchy of hettotype structures which are derivatives of the arisotypic cubic perovskite structure (ABX3), exemplified by SrTiO3 (tausonite) or KMgF3 (parascandolaite) by: (1) tilting and distortion of the BX6 octahedra; (2) ordering of A- and B-site cations; (3) formation of A-, B- or X-site vacancies. This hierarchical scheme can be applied to some naturally-occurring oxides, fluorides,hydroxides, chlorides, arsenides, intermetallic compounds and silicates which adopt such deri

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Korolev, Viacheslav I., Anatoly P. Pushkarev, Petr A. Obraztsov, Anton N. Tsypkin, Anvar A. Zakhidov, and Sergey V. Makarov. "Enhanced terahertz emission from imprinted halide perovskite nanostructures." Nanophotonics 9, no. 1 (2019): 187–94. http://dx.doi.org/10.1515/nanoph-2019-0377.

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AbstractLead halide perovskites were known to be a prospective family of materials for terahertz (THz) generation. On the other hand, perovskite nanostructures, nanoantennas, and metasurfaces allow tailoring perovskites optical characteristics, resulting in more efficient interaction with incident or emitted light. Moreover, the perovskites are robust materials against formation of defects caused by mechanical deformations and can be efficiently nanostructured by various high throughput methods. In this work, we have enhanced THz emission from MAPbI3 perovskite upon femtosecond laser irradiati

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McDonald, Calum, Chengsheng Ni, Paul Maguire, et al. "Nanostructured Perovskite Solar Cells." Nanomaterials 9, no. 10 (2019): 1481. http://dx.doi.org/10.3390/nano9101481.

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Over the past decade, lead halide perovskites have emerged as one of the leading photovoltaic materials due to their long carrier lifetimes, high absorption coefficients, high tolerance to defects, and facile processing methods. With a bandgap of ~1.6 eV, lead halide perovskite solar cells have achieved power conversion efficiencies in excess of 25%. Despite this, poor material stability along with lead contamination remains a significant barrier to commercialization. Recently, low-dimensional perovskites, where at least one of the structural dimensions is measured on the nanoscale, have demon

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Heidari Gourji, Fatemeh, and Dhayalan Velauthapillai. "A Review on Cs-Based Pb-Free Double Halide Perovskites: From Theoretical and Experimental Studies to Doping and Applications." Molecules 26, no. 7 (2021): 2010. http://dx.doi.org/10.3390/molecules26072010.

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Despite the progressive enhancement in the flexibility of Pb-based perovskites for optoelectronic applications, regrettably, they are facing two main challenges; (1) instability, which originates from using organic components in the perovskite structure, and (2) toxicity due to Pb. Therefore, new, stable non-toxic perovskite materials are demanded to overcome these drawbacks. The research community has been working on a wide variety of Pb-free perovskites with different molecular formulas and dimensionality. A variety of Pb-free halide double perovskites have been widely explored by different

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Era, Masanao, Yumeko Komatsu, and Naotaka Sakamoto. "Enhancement of Exciton Emission in Lead Halide-Based Layered Perovskites by Cation Mixing." Journal of Nanoscience and Nanotechnology 16, no. 4 (2016): 3338–42. http://dx.doi.org/10.1166/jnn.2016.12295.

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Spin-coated films of a lead halide, PbX: X = I and Br, layered perovskites having cyclohexenylethyl ammonium molecule as an organic layer, which were mixed with other metal halide-based layered perovskites consisting of various divalent metal halides (for example, CaI2, CdI2, FeI2, SnBr2 and so on), were prepared. The results of X-ray diffraction measurements exhibited that solid solution formation between PbX-based layered perovskite and other divalent metal halide-based layered perovskites was observed up to very high molar concentration of 50 molar% in the mixed film samples when divalent c

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Wyn Jones, Eurig, Peter James Holliman, Leon Bowen, Arthur Connell, Christopher Kershaw, and Diana Elizabeth Meza-Rojas. "Hybrid Al2O3-CH3NH3PbI3 Perovskites towards Avoiding Toxic Solvents." Materials 13, no. 1 (2020): 243. http://dx.doi.org/10.3390/ma13010243.

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We report the synthesis of organometal halide perovskites by milling CH3NH3I and PbI2 directly with an Al2O3 scaffold to create hybrid Al2O3-CH3NH3PbI3 perovskites, without the use of organic capping ligands that otherwise limit the growth of the material in the three dimensions. Not only does this improve the ambient stability of perovskites in air (100 min versus 5 min for dimethylformamide (DMF)-processed material), the method also uses much fewer toxic solvents (terpineol versus dimethylformamide). This has been achieved by solid-state reaction of the perovskite precursors to produce large

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Wang, Fangfang, Qing Chang, Yikai Yun, et al. "Hole-Transporting Low-Dimensional Perovskite for Enhancing Photovoltaic Performance." Research 2021 (May 28, 2021): 1–11. http://dx.doi.org/10.34133/2021/9797053.

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Halide perovskites with low-dimensionalities (2D or quasi-2D) have demonstrated outstanding stabilities compared to their 3D counterparts. Nevertheless, poor charge-transporting abilities of organic components in 2D perovskites lead to relatively low power conversion efficiency (PCE) and thus limit their applications in photovoltaics. Here, we report a novel hole-transporting low-dimensional (HT2D) perovskite, which can form a hole-transporting channel on the top surface of 3D perovskite due to self-assembly effects of metal halide frameworks. This HT2D perovskite can significantly reduce inte

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Wong, Walter P. D., John V. Hanna, and Andrew C. Grimsdale. "The classification of 1D `perovskites'." Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials 77, no. 3 (2021): 408–15. http://dx.doi.org/10.1107/s2052520621004376.

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There has been a huge amount of interest in perovskites recently and new structures of hybrid perovskites are frequently reported. The classification of perovskites has been unambiguous in the discussion of 3D and layered 2D perovskites due to the dimensional constraints. However, in 1D perovskites, the additional degrees of freedom have resulted in a large number of possible structural configurations. The new proposed notation aims to classify these structures based on the connectivity of the octahedra of the perovskite, which has a periodic repeating pattern. However, the notation should be

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Burger, Stefan, Shivani Grover, Keith T. Butler, Hanna L. B. Boström, Ricardo Grau-Crespo, and Gregor Kieslich. "Tilt and shift polymorphism in molecular perovskites." Materials Horizons 8, no. 9 (2021): 2444–50. http://dx.doi.org/10.1039/d1mh00578b.

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12

Zhang, Taiyang, Yuetian Chen, Miao Kan, et al. "MA Cation-Induced Diffusional Growth of Low-Bandgap FA-Cs Perovskites Driven by Natural Gradient Annealing." Research 2021 (August 18, 2021): 1–11. http://dx.doi.org/10.34133/2021/9765106.

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Low-bandgap formamidinium-cesium (FA-Cs) perovskites of FA1-xCsxPbI3 (x<0.1) are promising candidates for efficient and robust perovskite solar cells, but their black-phase crystallization is very sensitive to annealing temperature. Unfortunately, the low heat conductivity of the glass substrate builds up a temperature gradient within from bottom to top and makes the initial annealing temperature of the perovskite film lower than the black-phase crystallization point (~150°C). Herein, we take advantage of such temperature gradient for the diffusional growth of high-quality FA-Cs perovskites

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Bartel, Christopher J., Christopher Sutton, Bryan R. Goldsmith, et al. "New tolerance factor to predict the stability of perovskite oxides and halides." Science Advances 5, no. 2 (2019): eaav0693. http://dx.doi.org/10.1126/sciadv.aav0693.

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Predicting the stability of the perovskite structure remains a long-standing challenge for the discovery of new functional materials for many applications including photovoltaics and electrocatalysts. We developed an accurate, physically interpretable, and one-dimensional tolerance factor, τ, that correctly predicts 92% of compounds as perovskite or nonperovskite for an experimental dataset of 576 ABX3 materials (X = O2−, F−, Cl−, Br−, I−) using a novel data analytics approach based on SISSO (sure independence screening and sparsifying operator). τ is shown to generalize outside the training s

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Chen, Lung-Chien, Ching-Ho Tien, Yang-Cheng Jhou, and Wei-Cheng Lin. "Co-Solvent Controllable Engineering of MA0.5FA0.5Pb0.8Sn0.2I3 Lead–Tin Mixed Perovskites for Inverted Perovskite Solar Cells with Improved Stability." Energies 13, no. 10 (2020): 2438. http://dx.doi.org/10.3390/en13102438.

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Use of a lead–tin mixed perovskite is generally considered an effective method to broaden the absorption wavelength of perovskite thin films. However, the preparation of lead–tin mixed perovskites is a major challenge due to the multivalent state of tin and stability in the atmosphere. This study attempted to replace the organic cation and metal elements of perovskites with a relatively thermal stable formamidinium (FA+) and a more environmentally friendly tin element. MA0.5FA0.5Pb0.8Sn0.2I3 lead–tin mixed perovskite thin films were prepared with the one-step spin-coating method. By adjusting

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Hirose, Kei, Ryosuke Sinmyo, and John Hernlund. "Perovskite in Earth’s deep interior." Science 358, no. 6364 (2017): 734–38. http://dx.doi.org/10.1126/science.aam8561.

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Silicate perovskite-type phases are the most abundant constituent inside our planet and are the predominant minerals in Earth’s lower mantle more than 660 kilometers below the surface. Magnesium-rich perovskite is a major lower mantle phase and undergoes a phase transition to post-perovskite near the bottom of the mantle. Calcium-rich perovskite is proportionally minor but may host numerous trace elements that record chemical differentiation events. The properties of mantle perovskites are the key to understanding the dynamic evolution of Earth, as they strongly influence the transport propert

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Kim, Young-Hoon, Himchan Cho, and Tae-Woo Lee. "Metal halide perovskite light emitters." Proceedings of the National Academy of Sciences 113, no. 42 (2016): 11694–702. http://dx.doi.org/10.1073/pnas.1607471113.

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Twenty years after layer-type metal halide perovskites were successfully developed, 3D metal halide perovskites (shortly, perovskites) were recently rediscovered and are attracting multidisciplinary interest from physicists, chemists, and material engineers. Perovskites have a crystal structure composed of five atoms per unit cell (ABX3) with cation A positioned at a corner, metal cation B at the center, and halide anion X at the center of six planes and unique optoelectronic properties determined by the crystal structure. Because of very narrow spectra (full width at half-maximum ≤20 nm), whi

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Cheng, Lu, Chang Yi, Yunfang Tong, et al. "Halide Homogenization for High-Performance Blue Perovskite Electroluminescence." Research 2020 (December 24, 2020): 1–10. http://dx.doi.org/10.34133/2020/9017871.

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Metal halide perovskite light-emitting diodes (LEDs) have achieved great progress in recent years. However, bright and spectrally stable blue perovskite LED remains a significant challenge. Three-dimensional mixed-halide perovskites have potential to achieve high brightness electroluminescence, but their emission spectra are unstable as a result of halide phase separation. Here, we reveal that there is already heterogeneous distribution of halides in the as-deposited perovskite films, which can trace back to the nonuniform mixture of halides in the precursors. By simply introducing cationic su

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Akinbami, O., G. N. Ngubeni, F. Otieno, et al. "The effect of temperature and time on the properties of 2D Cs2ZnBr4 perovskite nanocrystals and their application in a Schottky barrier device." Journal of Materials Chemistry C 9, no. 18 (2021): 6022–33. http://dx.doi.org/10.1039/d1tc00264c.

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2D hybrid perovskites are promising materials for solar cell applications, in particular, cesium-based perovskite nanocrystals as they offer the stability that is absent in organic–inorganic perovskites.

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Eperon, Giles E., Giuseppe M. Paternò, Rebecca J. Sutton, et al. "Inorganic caesium lead iodide perovskite solar cells." Journal of Materials Chemistry A 3, no. 39 (2015): 19688–95. http://dx.doi.org/10.1039/c5ta06398a.

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The vast majority of perovskite solar cell research has focused on organic–inorganic lead trihalide perovskites; herein, we present working inorganic CsPbI<sub>3</sub>perovskite solar cells for the first time.

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Liu, Zhengzheng, Sihao Huang, Juan Du, Chunwei Wang, and Yuxin Leng. "Advances in inorganic and hybrid perovskites for miniaturized lasers." Nanophotonics 9, no. 8 (2020): 2251–72. http://dx.doi.org/10.1515/nanoph-2019-0572.

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AbstractThe rapid advancement of perovskite-based optoelectronics devices has caught the world’s attention due to their outstanding properties, such as long carrier lifetime, low defect trap density, large absorption coefficient, narrow linewidth and high optical gain. Herein, the photonic lasing properties of perovskites are reviewed since the first stimulated emission of perovskites observed in 2014. The review is mainly focused on 3D structures based on their inherently active microcavities and externally passive microcavities of the perovskites. First, the fundamental properties in terms o

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Zhao, J., N. L. Ross, and R. J. Angel. "Estimation of polyhedral compressibilities and structural evolution of GdFeO3-type perovskites at high pressures." Acta Crystallographica Section B Structural Science 62, no. 3 (2006): 431–39. http://dx.doi.org/10.1107/s0108768106009384.

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A new approach based on the bond-valence matching relation is developed to predict the detailed structural evolution of GdFeO3-type perovskites at high pressure from knowledge of the room-pressure structure and the high-pressure unit-cell parameters alone. The evolution of perovskite structures estimated in this way is in good agreement with the structure refinements available from high-pressure single-crystal diffraction measurements of a number of perovskites. The method is then extended to predict the structure of MgSiO3 perovskite at pressures for which no single-crystal structural data ar

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Ogundana, I. J., and S. Y. Foo. "Improving the Morphology of the Perovskite Absorber Layer in Hybrid Organic/Inorganic Halide Perovskite MAPbI3 Solar Cells." Journal of Solar Energy 2017 (May 3, 2017): 1–9. http://dx.doi.org/10.1155/2017/8549847.

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Recently, perovskite solar cells have attracted tremendous attention due to their excellent power conversion efficiency, low cost, simple fabrications, and high photovoltaic performance. Furthermore, the perovskite solar cells are lightweight and possess thin film and semitransparency. However, the nonuniformity in perovskite layer constitutes a major setback to the operation mechanism, performance, reproducibility, and degradation of perovskite solar cells. Therefore, one of the main challenges in planar perovskite devices is the fabrication of high quality films with controlled morphology an

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Fan, Ping, Huan-Xin Peng, Zhuang-Hao Zheng, et al. "Single-Source Vapor-Deposited Cs2AgBiBr6 Thin Films for Lead-Free Perovskite Solar Cells." Nanomaterials 9, no. 12 (2019): 1760. http://dx.doi.org/10.3390/nano9121760.

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Lead-free double perovskites have been considered as a potential environmentally friendly photovoltaic material for substituting the hybrid lead halide perovskites due to their high stability and nontoxicity. Here, lead-free double perovskite Cs2AgBiBr6 films are initially fabricated by single-source evaporation deposition under high vacuum condition. X-ray diffraction and scanning electron microscopy characterization show that the high crystallinity, flat, and pinhole-free double perovskite Cs2AgBiBr6 films were obtained after post-annealing at 300 °C for 15 min. By changing the annealing tem

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Oku, Takeo. "Crystal structures of perovskite halide compounds used for solar cells." REVIEWS ON ADVANCED MATERIALS SCIENCE 59, no. 1 (2020): 264–305. http://dx.doi.org/10.1515/rams-2020-0015.

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AbstractThe crystal structures of various types of perovskite halide compounds were summarized and described. Atomic arrangements of these perovskite compounds can be investigated by X-ray diffraction and transmission electron microscopy. Based on the structural models of basic perovskite halides, X-ray and electron diffractions were calculated and discussed to compare with the experimental data. Other halides such as elemental substituted or cation ordered double perovskite compounds were also described. In addition to the ordinary 3-dimensional perovskites, low dimensional perovskites with 2

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Hiragond, Chaitanya B., Niket S. Powar, and Su-Il In. "Recent Developments in Lead and Lead-Free Halide Perovskite Nanostructures towards Photocatalytic CO2 Reduction." Nanomaterials 10, no. 12 (2020): 2569. http://dx.doi.org/10.3390/nano10122569.

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Perovskite materials have been widely considered as emerging photocatalysts for CO2 reduction due to their extraordinary physicochemical and optical properties. Perovskites offer a wide range of benefits compared to conventional semiconductors, including tunable bandgap, high surface energy, high charge carrier lifetime, and flexible crystal structure, making them ideal for high-performance photocatalytic CO2 reduction. Notably, defect-induced perovskites, for example, crystallographic defects in perovskites, have given excellent opportunities to tune perovskites’ catalytic properties. Recentl

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Supianto, Mulya, Suyanta Suyanta, and Indriana Kartini. "An Interplay Role between Ammonium and Halide Anions as Additives in Perovskite CH₃NH₃PbI₃." Materials Science Forum 948 (March 2019): 287–93. http://dx.doi.org/10.4028/www.scientific.net/msf.948.287.

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Methylammonium lead trihalide perovskites have emerged as attractive materials for solar cell applications. The major eminence of this materials can be crystallized via various solution methods to produce the solid state of thin films. However, the crystallinity of perovskite depends on the composition of perovskites. Here, we study NH4Cl and NH4Br as precursor additives for improving crystallinity of perovskites. Perovskite was synthesized by mixing precursor solutions of CH3NH3I and Pb(Ac)2with or without additives NH4Cl and NH4Br using the one-step spin-coating method. By characterizing the

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Gao, Zhan, Yifan Zheng, Guancheng Huang, Genjie Yang, Xinge Yu, and Junsheng Yu. "Additive Modulated Perovskite Microstructures for High Performance Photodetectors." Micromachines 11, no. 12 (2020): 1090. http://dx.doi.org/10.3390/mi11121090.

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Organic-inorganic hybrid perovskites have been widely used as light sensitive components for high-efficient photodetectors due to their superior optoelectronic properties. However, the unwanted crystallographic defects of perovskites typically result in high dark current, and thus limit the performance of the device. Herein, we introduce a simple route of microstructures control in MAPbI3 perovskites that associates with introducing an additive of 3,3,4,4-benzophenonetetracarboxylic dianhydridean (BPTCD) for crystallization adjustment of the perovskite film. The BPTCD additive can facilitate t

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Thrithamarassery Gangadharan, Deepak, and Dongling Ma. "Searching for stability at lower dimensions: current trends and future prospects of layered perovskite solar cells." Energy & Environmental Science 12, no. 10 (2019): 2860–89. http://dx.doi.org/10.1039/c9ee01591d.

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Two-dimensional perovskites are an attractive alternative to 3D perovskites for solar cell application as they directly address a critical issue of stability of 3D perovskite solar cells, while achieving similarly high power conversion efficiencies.

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Ma, Chunqing, Dong Shen, Bin Huang, et al. "High performance low-dimensional perovskite solar cells based on a one dimensional lead iodide perovskite." Journal of Materials Chemistry A 7, no. 15 (2019): 8811–17. http://dx.doi.org/10.1039/c9ta01859j.

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De Giorgi, Maria Luisa, Stefania Milanese, Argyro Klini, and Marco Anni. "Environment-Induced Reversible Modulation of Optical and Electronic Properties of Lead Halide Perovskites and Possible Applications to Sensor Development: A Review." Molecules 26, no. 3 (2021): 705. http://dx.doi.org/10.3390/molecules26030705.

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Lead halide perovskites are currently widely investigated as active materials in photonic and optoelectronic devices. While the lack of long term stability actually limits their application to commercial devices, several experiments demonstrated that beyond the irreversible variation of the material properties due to degradation, several possibilities exist to reversibly modulate the perovskite characteristics by acting on the environmental conditions. These results clear the way to possible applications of lead halide perovskites to resistive and optical sensors. In this review we will descri

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Chen, Yuetian, and Yixin Zhao. "Incorporating quantum dots for high efficiency and stable perovskite photovoltaics." Journal of Materials Chemistry A 8, no. 47 (2020): 25017–27. http://dx.doi.org/10.1039/d0ta09096d.

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Liu, Wei, Liang Chu, Nanjing Liu, et al. "Efficient perovskite solar cells fabricated by manganese cations incorporated in hybrid perovskites." Journal of Materials Chemistry C 7, no. 38 (2019): 11943–52. http://dx.doi.org/10.1039/c9tc03375k.

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Turren-Cruz, Silver-Hamill, Anders Hagfeldt, and Michael Saliba. "Methylammonium-free, high-performance, and stable perovskite solar cells on a planar architecture." Science 362, no. 6413 (2018): 449–53. http://dx.doi.org/10.1126/science.aat3583.

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Currently, perovskite solar cells (PSCs) with high performances greater than 20% contain bromine (Br), causing a suboptimal bandgap, and the thermally unstable methylammonium (MA) molecule. Avoiding Br and especially MA can therefore result in more optimal bandgaps and stable perovskites. We show that inorganic cation tuning, using rubidium and cesium, enables highly crystalline formamidinium-based perovskites without Br or MA. On a conventional, planar device architecture, using polymeric interlayers at the electron- and hole-transporting interface, we demonstrate an efficiency of 20.35% (sta

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Yan, Kangrong, Jiehuan Chen, Huanxin Ju, Feizhi Ding, Hongzheng Chen, and Chang-Zhi Li. "Achieving high-performance thick-film perovskite solar cells with electron transporting Bingel fullerenes." Journal of Materials Chemistry A 6, no. 32 (2018): 15495–503. http://dx.doi.org/10.1039/c8ta05636f.

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Two electron-transporting Bingel fullerenes have been developed for achieving thick-film perovskite solar cells with efficiencies beyond 19% with perovskite layers over 1 micrometer, unveiling the subtle molecular interaction between Bingel fullerenes and perovskites strongly influences the device hysteresis and performance.

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Jones, Eurig W., Peter J. Holliman, Arthur Connell, et al. "A novel dimethylformamide (DMF) free bar-cast method to deposit organolead perovskite thin films with improved stability." Chemical Communications 52, no. 23 (2016): 4301–4. http://dx.doi.org/10.1039/c5cc09859a.

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We report a solvent-free approach to synthesizing organolead perovskites by using solid state reactions to coat perovskite crystals onto Al<sub>2</sub>O<sub>3</sub>or TiO<sub>2</sub>nanoparticles followed by addition of terpineol affording perovskite inks.

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Kumar, Anjan, and Sangeeta Singh. "Numerical modeling of planar lead free perovskite solar cell using tungsten disulfide (WS2) as an electron transport layer and Cu2O as a hole transport layer." Modern Physics Letters B 34, no. 24 (2020): 2050258. http://dx.doi.org/10.1142/s0217984920502589.

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Metal halide-perovskite solar cells have managed to attain soaring heights in power conversion efficiency in the past decade, rising from 3.8% to around 24% in 2019. Formal lead-based perovskites have captivated massive attention because of their then toxic nature and short-term stability of fabricated devices. Therefore, lead-free perovskites have drawn the researcher’s interest in recent years. In this work, we projected a unique planar perovskite structure constituted of [Formula: see text] Tungsten Disulfide [Formula: see text] lead-free perovskite[Formula: see text]. Herein, Tungsten Disu

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Liu, Yalan, Chao Wang, Yurong Guo, et al. "New lead bromide chiral perovskites with ultra-broadband white-light emission." Journal of Materials Chemistry C 8, no. 17 (2020): 5673–80. http://dx.doi.org/10.1039/d0tc00881h.

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Talanov, M. V., V. B. Shirokov, and V. M. Talanov. "Anion order in perovskites: a group-theoretical analysis." Acta Crystallographica Section A Foundations and Advances 72, no. 2 (2016): 222–35. http://dx.doi.org/10.1107/s2053273315022147.

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Anion ordering in the structure of cubic perovskite has been investigated by the group-theoretical method. The possibility of the existence of 261 ordered low-symmetry structures, each with a unique space-group symmetry, is established. These results include five binary and 14 ternary anion superstructures. The 261 idealized anion-ordered perovskite structures are considered as aristotypes, giving rise to different derivatives. The structures of these derivatives are formed by tilting ofBO6octahedra, distortions caused by the cooperative Jahn–Teller effect and other physical effects. Some deri

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Deluque Toro, Crispulo Enrique, David Arsenio Landinez Tellez, Jairo Arbey Rodriguez Martinez, and Jairo Roa Rojas. "Estudio AB-Initio de las propiedades estructurales y electrónicas de la doble Perovskita Ba2InTaO6." Respuestas 18, no. 1 (2013): 5–8. http://dx.doi.org/10.22463/0122820x.429.

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Los materiales de tipo Perovskita doble con fórmula genérica A2BB’O6 han sido ampliamente estudiados en los últimos años debido a su gran versatilidad, la cual permite la inclusión de iones de tipo alcalino térreo en los sitios A de la estructura y metales de transición en los sitios B y B’, dando origen a diversas propiedades físicas que redundan en múltiples aplicaciones industriales. En este trabajo estudiamos las propiedades estructurales y electrónicas del compuesto Ba2InTaO6, el cual es de particular interés ya que dichos sistemas podrían aplicarse en el desarrollo de resonadores dieléct

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Hou, Yi, Erkan Aydin, Michele De Bastiani, et al. "Efficient tandem solar cells with solution-processed perovskite on textured crystalline silicon." Science 367, no. 6482 (2020): 1135–40. http://dx.doi.org/10.1126/science.aaz3691.

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Stacking solar cells with decreasing band gaps to form tandems presents the possibility of overcoming the single-junction Shockley-Queisser limit in photovoltaics. The rapid development of solution-processed perovskites has brought perovskite single-junction efficiencies >20%. However, this process has yet to enable monolithic integration with industry-relevant textured crystalline silicon solar cells. We report tandems that combine solution-processed micrometer-thick perovskite top cells with fully textured silicon heterojunction bottom cells. To overcome the charge-collection challenges i

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Li, Xuesong, Pan Zeng, Qiongrong Ou, and Shuyu Zhang. "Fabrication of Perovskite Film-Coated Hollow Capillary Fibers Using a Fast Solvent Exchange Method." Nanomaterials 11, no. 6 (2021): 1483. http://dx.doi.org/10.3390/nano11061483.

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Metal halide perovskites have been successfully applied in a variety of fields such as LEDs, lasers and solar cells, thanks to their excellent optoelectronic properties. Capillary fibers can further expand the range of perovskite applications and at the same time improve its stability by encapsulating the perovskite inside the capillary. However, the high-quality perovskite film-coated hollow capillary fibers have yet to be realized. Here, we introduce a fast solvent exchange method which is used for the preparation of neat and smooth perovskite films deposited on the inner surface of capillar

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Liang, Jingjing, Chunjun Liang, Huimin Zhang, et al. "CH3NH3I post-treatment improves the performance of perovskite solar cells via eliminating the impure phases." Functional Materials Letters 10, no. 04 (2017): 1750049. http://dx.doi.org/10.1142/s1793604717500497.

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Organic–inorganic halide perovskites are currently generating extensive interest for applications in solar cells. The perovskite morphology and composition have significant roles in solar cells. Impure phases, which will influence the performance of solar cells, are inevitably present in the film of perovskite. We found that another MAI deposition on the previous perovskite could ameliorate the film. The post-deposited MAI participates in the reconstruction of the perovskite, leading to reduced amount of impure phase, increased grain size, increased absorption and significantly improved power

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Gebhardt, Julian, and Andrew M. Rappe. "Transition metal inverse-hybrid perovskites." Journal of Materials Chemistry A 6, no. 30 (2018): 14560–65. http://dx.doi.org/10.1039/c8ta02785d.

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Pang, Tiqiang, Renxu Jia, Yucheng Wang, et al. "Giant Zero-Drift Electronic Behaviors in Methylammonium Lead Halide Perovskite Diodes by Doping Iodine Ions." Materials 11, no. 9 (2018): 1606. http://dx.doi.org/10.3390/ma11091606.

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Methylammonium lead halide perovskites have attracted extensive attention for optoelectronic applications. Carrier transport in perovskites is obscured by vacancy-mediated ion migration, resulting in anomalous electronic behavior and deteriorated reliability of the devices. In this communication, we demonstrate that ion migration can be significantly enhanced by doping additional mobile I- ions into the perovskite bulk. Ionic confinement structures of vertical metal oxide semiconductor (MOS) and lateral metal semiconductor metal (MSM) diodes designed to decouple ion-migration/accumulation and

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Wen, Hongzhe, and Xuan Luo. "Tuning Bandgaps of Mixed Halide and Oxide Perovskites CsSnX3 (X=Cl, I), and SrBO3 (B=Rh, Ti)." Applied Sciences 11, no. 15 (2021): 6862. http://dx.doi.org/10.3390/app11156862.

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Perovskites have recently attracted interest in the field of solar energy due to their excellent photovoltaic properties. We herein present a new approach to the composition of lead free perovskites via mixing of halide and oxide perovskites that share the cubic ABX3 structure. Using first-principles calculations through Density Functional Theory, we systematically investigated the atomic and electronic structures of mixed perovskite compounds composed of four cubic ABX3 perovskites. Our result shows that the B and X atoms play important roles in their band structure. On the other hand, their

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Börger, Alexander, and Hubert Langbein. "Zur Kenntnis rhomboedrischer Perowskite (La,Sr)(Mn,Fe)O3/Contributions to the Chemistry of Rhombohedral Perovskites (La,Sr)(Mn,Fe)O3." Zeitschrift für Naturforschung B 58, no. 11 (2003): 1079–86. http://dx.doi.org/10.1515/znb-2003-1108.

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Abstract Perovskites La1−xSrxMn1−xFexO3+δ (x = 0.1 - 0.5) were prepared by a freeze-drying method and for comparison by conventional solid state reaction. Freeze-dried precursors are more reactive, forming the final perovskites at lower temperatures and within shorter reaction times. Under the reaction conditions employed (air atmosphere, 800 - 1350 °C), the perovskite La0.9Sr0.1Mn0.9Fe0.1O3 was obtained in an orthorhombic modification. By annealing under oxygen at 800 °C, however, a rhombohedral modification La0.9Sr0.1Mn0.9Fe0.1O3.1 with an excess oxygen content can be prepared. The structure

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Dong, Yuhui, Yousheng Zou, Jizhong Song, Xiufeng Song, and Haibo Zeng. "Recent progress of metal halide perovskite photodetectors." Journal of Materials Chemistry C 5, no. 44 (2017): 11369–94. http://dx.doi.org/10.1039/c7tc03612d.

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The metal halide perovskites have attracted unprecedented attention in the field of photodetectors. The recent progress of perovskite photodetectors for different spectral regions and applications are reviewed. The enhancement strategies of device performance are discussed as well. In addition, summary and outlook are given to boost the development of perovskite PDs.

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Ning, Weihua, Jinke Bao, Yuttapoom Puttisong, et al. "Magnetizing lead-free halide double perovskites." Science Advances 6, no. 45 (2020): eabb5381. http://dx.doi.org/10.1126/sciadv.abb5381.

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Spintronics holds great potential for next-generation high-speed and low–power consumption information technology. Recently, lead halide perovskites (LHPs), which have gained great success in optoelectronics, also show interesting magnetic properties. However, the spin-related properties in LHPs originate from the spin-orbit coupling of Pb, limiting further development of these materials in spintronics. Here, we demonstrate a new generation of halide perovskites, by alloying magnetic elements into optoelectronic double perovskites, which provide rich chemical and structural diversities to host

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He, Yizhou, Liyifei Xu, Cheng Yang, Xiaowei Guo, and Shaorong Li. "Design and Numerical Investigation of a Lead-Free Inorganic Layered Double Perovskite Cs4CuSb2Cl12 Nanocrystal Solar Cell by SCAPS-1D." Nanomaterials 11, no. 9 (2021): 2321. http://dx.doi.org/10.3390/nano11092321.

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In the last decade, perovskite solar cells have made a quantum leap in performance with the efficiency increasing from 3.8% to 25%. However, commercial perovskite solar cells have faced a major impediment due to toxicity and stability issues. Therefore, lead-free inorganic perovskites have been investigated in order to find substitute perovskites which can provide a high efficiency similar to lead-based perovskites. In recent studies, as a kind of lead-free inorganic perovskite material, Cs4CuSb2Cl12 has been demonstrated to possess impressive photoelectric properties and excellent environment

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Zhang, Meiying, Fengmin Wu, Dan Chi, Keli Shi, and Shihua Huang. "High-efficiency perovskite solar cells with poly(vinylpyrrolidone)-doped SnO2 as an electron transport layer." Materials Advances 1, no. 4 (2020): 617–24. http://dx.doi.org/10.1039/d0ma00028k.

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