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Journal articles on the topic 'Heterojunctions - Nanostructured Materials'

Author: Grafiati

Published: 7 September 2023

Last updated: 31 July 2025

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1

Du, Meiqi, Shengxin Cao, Xiaozhou Ye, and Jianfeng Ye. "Recent Advances in the Fabrication of All-Solid-State Nanostructured TiO2-Based Z-scheme Heterojunctions for Environmental Remediation." Journal of Nanoscience and Nanotechnology 20, no. 9 (2020): 5861–73. http://dx.doi.org/10.1166/jnn.2020.18719.

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Nanostructured TiO2-based Z-scheme heterojunctions have been widely accepted to be among the most effective photocatalysts for environmental remediation owing to their broadened light absorbance, high efficiency of photogenerated charge carrier separation, and well-preserved strong oxidation and reduction capability. In this review, we will first introduce the photogenerated charge carrier transportation mechanism of three different types of Z-scheme heterojunction systems, namely, liquid-phase Z-scheme photocatalytic system, all-solid-state indirect Z-scheme photocatalytic system, and all-sol

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Bratovčić, Amra, and Vesna Tomašić. "Hydrogen Production Through Newly Developed Photocatalytic Nanostructures and Composite Materials." Processes 13, no. 6 (2025): 1813. https://doi.org/10.3390/pr13061813.

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Photocatalytic hydrogen (H2) production offers a promising solution to energy shortages and environmental challenges by converting solar energy into chemical energy. Hydrogen, as a versatile energy carrier, can be generated through photocatalysis under sunlight or via electrolysis powered by solar or wind energy. However, the advancement of photocatalysis is hindered by the limited availability of effective visible light-responsive semiconductors and the challenges of charge separation and transport. To address these issues, researchers are focusing on the development of novel nanostructured s

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Yang, Shulin, Gui Lei, Huoxi Xu, Zhigao Lan, Zhao Wang, and Haoshuang Gu. "Metal Oxide Based Heterojunctions for Gas Sensors: A Review." Nanomaterials 11, no. 4 (2021): 1026. http://dx.doi.org/10.3390/nano11041026.

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The construction of heterojunctions has been widely applied to improve the gas sensing performance of composites composed of nanostructured metal oxides. This review summarises the recent progress on assembly methods and gas sensing behaviours of sensors based on nanostructured metal oxide heterojunctions. Various methods, including the hydrothermal method, electrospinning and chemical vapour deposition, have been successfully employed to establish metal oxide heterojunctions in the sensing materials. The sensors composed with the built nanostructured heterojunctions were found to show enhance

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Li, Jian, Pablo Jiménez-Calvo, Erwan Paineau, and Mohamed Nawfal Ghazzal. "Metal Chalcogenides Based Heterojunctions and Novel Nanostructures for Photocatalytic Hydrogen Evolution." Catalysts 10, no. 1 (2020): 89. http://dx.doi.org/10.3390/catal10010089.

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The photo-conversion efficiency is a key issue in the development of new photocatalysts for solar light driven water splitting applications. In recent years, different engineering strategies have been proposed to improve the photogeneration and the lifetime of charge carriers in nanostructured photocatalysts. In particular, the rational design of heterojunctions composites to obtain peculiar physico-chemical properties has achieved more efficient charge carriers formation and separation in comparison to their individual component materials. In this review, the recent progress of sulfide-based

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Mamedov, Huseyn, Mustafa Muradov, Zoltan Konya, et al. "Fabrication and characterization of c-Si/porous-Si/CdS/ZnxCd1-xO heterojunctions for applications in nanostructured solar cells." Photonics Letters of Poland 10, no. 3 (2018): 73. http://dx.doi.org/10.4302/plp.v10i3.813.

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Solar cells based on c-Si/porous-Si/CdS/ZnxCd1-xO heterojunctions were synthesized by depositing CdS films on c-Si/porous-Si (PS) substrates by electrochemical deposition (ED). PS layers with systematically varied pore diameter (8-45 nm) and were fabricated on p-type c-Si wafers using electrochemical etching. The window layers of ZnxCd1-xO with several Zn concentrations(x=0.2; 0.4; 0.5 and 0.6) were also deposited on the CdS buffer layers by ED. The photoelectrical properties of heterojunctions were studied as functions of PS pore size and Zn content in ZnxCd1-xO. The optimal pore size and Zn

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Wang, Zhiping, Ying Zhou, Tetsuhiko Miyadera, Masayuki Chikamatsu, and Yuji Yoshida. "Constructing Nanostructured Donor/Acceptor Bulk Heterojunctions via Interfacial Templates for Efficient Organic Photovoltaics." ACS Applied Materials & Interfaces 9, no. 50 (2017): 43893–901. http://dx.doi.org/10.1021/acsami.7b13989.

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Letertre, Laurie, Roland Roche, Olivier Douhéret, et al. "A scanning probe microscopy study of nanostructured TiO2/poly(3-hexylthiophene) hybrid heterojunctions for photovoltaic applications." Beilstein Journal of Nanotechnology 9 (August 1, 2018): 2087–96. http://dx.doi.org/10.3762/bjnano.9.197.

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The nanoscale morphology of photoactive hybrid heterojunctions plays a key role in the performances of hybrid solar cells. In this work, the heterojunctions consist of a nanocolumnar TiO2 surface covalently grafted with a monolayer of poly(3-hexylthiophene) (P3HT) functionalized with carboxylic groups (–COOH). Through a joint analysis of the photovoltaic properties at the nanoscale by photoconductive-AFM (PC-AFM) and surface photovoltage imaging, we investigated the physical mechanisms taking place locally during the photovoltaic process and the correlation to the nanoscale morphology. A down-

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Oladipo, Akeem Adeyemi, and Faisal Suleiman Mustafa. "Bismuth-based nanostructured photocatalysts for the remediation of antibiotics and organic dyes." Beilstein Journal of Nanotechnology 14 (March 3, 2023): 291–321. http://dx.doi.org/10.3762/bjnano.14.26.

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A serious threat to human health and the environment worldwide, in addition to the global energy crisis, is the increasing water pollution caused by micropollutants such as antibiotics and persistent organic dyes. Nanostructured semiconductors in advanced oxidation processes using photocatalysis have recently attracted a lot of interest as a promising green and sustainable wastewater treatment method for a cleaner environment. Due to their narrow bandgaps, distinctive layered structures, plasmonic, piezoelectric and ferroelectric properties, and desirable physicochemical features, bismuth-base

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Capek, Jiri, Kalyani Shaji, Stanislav Haviar, Petr Zeman, Michal Procházka, and Radomír Čerstvý. "Tailoring Microstructure and Composition of Composite CuO/WO₃ Nanoparticle-Based Thin Films for Enhanced H₂ Gas Sensing." ECS Meeting Abstracts MA2025-01, no. 59 (2025): 2782. https://doi.org/10.1149/ma2025-01592782mtgabs.

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The conductometric gas sensors operate by modulating the electrical conductivity of the sensing material through adsorption-desorption reactions between the target gas and the sensor surface. Metal oxide semiconductors (MOS) are conductometric materials highly sensitive to oxidizing and reducing gases. In addition, composite MOS-based materials may further benefit from formed heterojunctions potentially significantly improving the sensitivity. Our focus is to develop advanced hydrogen-gas sensing materials composed of a mixture of p-type CuO and n-type WO3 nanoparticles (NPs) with optimized mi

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Basyooni, Mohamed A., Shrouk E. Zaki, Nada Alfryyan, et al. "Nanostructured MoS2 and WS2 Photoresponses under Gas Stimuli." Nanomaterials 12, no. 20 (2022): 3585. http://dx.doi.org/10.3390/nano12203585.

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This study was on the optoelectronic properties of multilayered two-dimensional MoS2 and WS2 materials on a silicon substrate using sputtering physical vapor deposition (PVD) and chemical vapor deposition (CVD) techniques. For the first time, we report ultraviolet (UV) photoresponses under air, CO2, and O2 environments at different flow rates. The electrical Hall effect measurement showed the existence of MoS2 (n-type)/Si (p-type) and WS2 (P-type)/Si (p-type) heterojunctions with a higher sheet carrier concentration of 5.50 × 105 cm−2 for WS2 thin film. The IV electrical results revealed that

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Kumar, Nirmal, Stanislav Haviar, and Petr Zeman. "Three-Layer PdO/CuWO4/CuO System for Hydrogen Gas Sensing with Reduced Humidity Interference." Nanomaterials 11, no. 12 (2021): 3456. http://dx.doi.org/10.3390/nano11123456.

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The growing hydrogen industry is stimulating an ongoing search for new materials not only for hydrogen production or storage but also for hydrogen sensing. These materials have to be sensitive to hydrogen, but additionally, their synthesis should be compatible with the microcircuit industry to enable seamless integration into various devices. In addition, the interference of air humidity remains an issue for hydrogen sensing materials. We approach these challenges using conventional reactive sputter deposition. Using three consequential processes, we synthesized multilayer structures. A basic

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Fu, Hang-Kuei, Cheng-Liang Cheng, Chun-Hsiung Wang, Tai-Yuan Lin, and Yang-Fang Chen. "Selective Angle Electroluminescence of Light-Emitting Diodes based on Nanostructured ZnO/GaN Heterojunctions." Advanced Functional Materials 19, no. 21 (2009): 3471–75. http://dx.doi.org/10.1002/adfm.200900815.

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Georgiadou, D. G., M. Ulmeanu, M. Kompitsas, P. Argitis, and M. Kandyla. "Scalable fabrication of nanostructured p-Si/n-ZnO heterojunctions by femtosecond-laser processing." Materials Research Express 1, no. 4 (2014): 045902. http://dx.doi.org/10.1088/2053-1591/1/4/045902.

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Zheng, Feng, Qiang Zhen, Sajid Bashir, and Jingbo Louise Liu. "(Digital Presentation) Ternary Metal Oxide Electrodes Used in Supercapacitor to Improve Emerging Energy Storage." ECS Meeting Abstracts MA2022-01, no. 38 (2022): 1685. http://dx.doi.org/10.1149/ma2022-01381685mtgabs.

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Supercapacitors with improved specific capacitance (F g-1), long cycling life, high power (W kg-1), and energy densities (Whkg-1) were fabricated to close the gap between traditional and emerging energy storage materials. We developed responsive supercapacitor electrodes with heterojunctions composed of well-aligned vanadium (V) oxide (V2O5) ribbon arrays and manganese (IV) oxide (MnO2) nanoparticles sphere-network structure. The V2O5 arrays were deposited on the nickel foam substrate using a cost-effective and green hydrothermal chemistry, followed by a MnO2 nano-grafting. The architectural M

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Stavarache, Ionel, Valentin Adrian Maraloiu, Petronela Prepelita, and Gheorghe Iordache. "Nanostructured germanium deposited on heated substrates with enhanced photoelectric properties." Beilstein Journal of Nanotechnology 7 (October 21, 2016): 1492–500. http://dx.doi.org/10.3762/bjnano.7.142.

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Obtaining high-quality materials, based on nanocrystals, at low temperatures is one of the current challenges for opening new paths in improving and developing functional devices in nanoscale electronics and optoelectronics. Here we report a detailed investigation of the optimization of parameters for the in situ synthesis of thin films with high Ge content (50 %) into SiO2. Crystalline Ge nanoparticles were directly formed during co-deposition of SiO2 and Ge on substrates at 300, 400 and 500 °C. Using this approach, effects related to Ge–Ge spacing are emphasized through a significant improve

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Panaitescu, Ana-Maria, Iulia Antohe, Claudiu Locovei, et al. "Effect of the Cadmium Telluride Deposition Method on the Covering Degree of Electrodes Based on Copper Nanowire Arrays." Applied Sciences 12, no. 15 (2022): 7808. http://dx.doi.org/10.3390/app12157808.

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In this work, we report the preparation of nanostructured electrodes based on dense arrays of vertically-aligned copper (Cu) nanowires (NWs) to be subsequently covered by cadmium telluride (CdTe) thin films, with great potential to be used within “substrate”-type photovoltaic cells based on AII-BVI heterojunctions. In particular, the multi-step preparation protocol presented here involves an electrochemical synthesis procedure within a supported anodic aluminum oxide (AAO) nanoporous template for first generating a homogeneous array of vertically-aligned Cu NWs, which are then further embedded

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Wang, Yong, and Naisen Yu. "Fabrication visible-blind ultraviolet photodetector based on ZnS/GaN heterostructure with fast response." Materials Express 10, no. 5 (2020): 629–33. http://dx.doi.org/10.1166/mex.2020.1684.

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In this paper, visible-blind ultraviolet (UV) detectors based on a ZnS/p-GaN heterojunction structure were fabricated. The heterojunction structure was composed of a ZnS nanostructure deposited on a p-GaN/sapphire substrate. The ZnS nanostructured component was obtained via radio-frequency magnetron sputtering. The device based on this ZnS/p-GaN heterojunction structure showed a reproducible, stable, and fast response speed. Therefore, the results demonstrated that the ZnS/p-GaN heterojunction was successfully fabricated using this relatively low-cost method.

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Ughade, Yash, Shubham Mehta, Gautam Patel, Roopa Gowda, Nirav Joshi, and Rohan Patel. "Progress in CO2 Gas Sensing Technologies: Insights into Metal Oxide Nanostructures and Resistance-Based Methods." Micromachines 16, no. 4 (2025): 466. https://doi.org/10.3390/mi16040466.

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The demand for reliable and cost-effective CO2 gas sensors is escalating due to their extensive applications in various sectors such as food packaging, indoor air quality assessment, and real-time monitoring of anthropogenic CO2 emissions to mitigate global warming. Nanostructured materials exhibit exceptional properties, including small grain size, controlled morphology, and heterojunction effects, rendering them promising candidates for chemiresistive CO2 gas sensors. This review article provides an overview of recent advancements in chemiresistive CO2 gas sensors based on nanostructured sem

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Buyuk, Gonca Ilgu, and Saliha Ilican. "Electrical and photovoltaic properties of p-n heterojunctions obtained using sol gel derived nanostructured ZnO:La films onto p-Si." Superlattices and Microstructures 145 (September 2020): 106605. http://dx.doi.org/10.1016/j.spmi.2020.106605.

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Sahoo, Prakash Chandra, Satyabadi Martha, and Kulamani Parida. "Solar Fuels from CO₂ Photoreduction over Nano-Structured Catalysts." Materials Science Forum 855 (May 2016): 1–19. http://dx.doi.org/10.4028/www.scientific.net/msf.855.1.

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The image of CO2 is turning quickly because there are increasing attempts to consider it as resources for hydrocarbon based fuels rather a green house gas. Owing to the limited amount of non-renewable readily available energy sources, the paradigm of energy supply is changing from conventional energy sources to inexhaustible renewable sources such as sunlight, wind, tidal energy. But the current scientific interest is concentrated in the efficient recycling of CO2 from a waste combustion product into a solar fuel by photo reduction method that can be used within the current energy infrastructu

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Du, Tingting, Congzhi Hu, Yuye Li, et al. "High-efficiency photocatalytic degradation of Rhodamine B and tetracycline by Z-scheme nanostructured Ag/Ag3PO4/Ti3+-TiO2 mesocrystals heterojunctions under visible light." Materials Science in Semiconductor Processing 172 (March 2024): 108081. http://dx.doi.org/10.1016/j.mssp.2023.108081.

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Alahmadi, Nadiyah. "Recent Progress in Photocatalytic Removal of Environmental Pollution Hazards in Water Using Nanostructured Materials." Separations 9, no. 10 (2022): 264. http://dx.doi.org/10.3390/separations9100264.

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Water pollution has become a critical issue because of the Industrial Revolution, growing populations, extended droughts, and climate change. Therefore, advanced technologies for wastewater remediation are urgently needed. Water contaminants are generally classified as microorganisms and inorganic/organic pollutants. Inorganic pollutants are toxic and some of them are carcinogenic materials, such as cadmium, arsenic, chromium, cadmium, lead, and mercury. Organic pollutants are contained in various materials, including organic dyes, pesticides, personal care products, detergents, and industrial

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Ge, Shunhao, Dandan Sang, Changxing Li, Yarong Shi, Qinglin Wang, and Dao Xiao. "Research Progress and Future Perspectives on Photonic and Optoelectronic Devices Based on p-Type Boron-Doped Diamond/n-Type Titanium Dioxide Heterojunctions: A Mini Review." Nanomaterials 15, no. 13 (2025): 1003. https://doi.org/10.3390/nano15131003.

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Titanium dioxide (TiO2) is a wide-bandgap semiconductor material with broad application potential, known for its excellent photocatalytic performance, high chemical stability, low cost, and non-toxicity. These properties make it highly attractive for applications in photovoltaic energy, environmental remediation, and optoelectronic devices. For instance, TiO2 is widely used as a photocatalyst for hydrogen production via water splitting and for degrading organic pollutants, thanks to its efficient photo-generated electron–hole separation. Additionally, TiO2 exhibits remarkable performance in dy

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Wu, Di, Jun Guo, Zhen-Hua Ge, and Jing Feng. "Facile Synthesis Bi2Te3 Based Nanocomposites: Strategies for Enhancing Charge Carrier Separation to Improve Photocatalytic Activity." Nanomaterials 11, no. 12 (2021): 3390. http://dx.doi.org/10.3390/nano11123390.

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Varying structure Bi2Te3-based nanocomposite powders including pure Bi2Te3, Bi2Te3/Bi core−shell, and Bi2Te3/AgBiTe2 heterostructure were synthesized by hydrothermal synthesis using Bi2S3 as the template and hydrazine as the reductant. Successful realization of Bi2Te3-based nanostructures were concluded from XRD, FESEM, and TEM. In this work, the improvement in the performance of the rhodamine B (RhB) decomposition efficiency under visible light was discussed. The Bi2Te3/AgBiTe2 heterostructures revealed propitious photocatalytic performance ca. 90% after 60 min. The performance was over Bi2Te

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Pintossi, Chiara, Gabriele Salvinelli, Giovanni Drera, et al. "Direct Evidence of Chemically Inhomogeneous, Nanostructured, Si–O Buried Interfaces and Their Effect on the Efficiency of Carbon Nanotube/Si Photovoltaic Heterojunctions." Journal of Physical Chemistry C 117, no. 36 (2013): 18688–96. http://dx.doi.org/10.1021/jp404820k.

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Jamwal, Nishant Singh, and Amirkianoosh Kiani. "Advanced Fabrication of 3D Micro/Nanostructures of Gallium Oxide with a Tuned Band Gap and Optical Properties." Micromachines 15, no. 3 (2024): 347. http://dx.doi.org/10.3390/mi15030347.

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Gallium oxide (Ga2O3) is a promising material for high-power semiconductor applications due to its wide band gap and high breakdown voltage. However, the current methods for fabricating Ga2O3 nanostructures have several disadvantages, including their complex manufacturing processes and high costs. In this study, we report a novel approach for synthesizing β-Ga2O3 nanostructures on gallium phosphide (GaP) using ultra-short laser pulses for in situ nanostructure generation (ULPING). We varied the process parameters to optimize the nanostructure formation, finding that the ULPING method produces

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Doroshkevich, Alexander S., Anna S. Zakharova, Boris L. Oksengendler, et al. "The Rectifying Contact of Hydrated Different Size YSZ Nanoparticles for Advanced Electronics." Nanomaterials 12, no. 24 (2022): 4493. http://dx.doi.org/10.3390/nano12244493.

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The paper considers the new effects of the nanoscale state of matter, which open up prospects for the development of electronic devices using new physical principles. The contacts of chemically homogeneous nanoparticles of yttrium-stabilized zirconium oxide (ZrO2—x mol% Y2O3, x = 0, 3, 4, 8; YSZ) with different sizes of 7.5 nm and 9 nm; 7.5 nm and 11 nm; and 7.5 nm and 14 nm, respectively, was studied on direct current using nanostructured objects in the form of compacts obtained by high-hydrostatic pressure (HP-compacts of 300MPa). A unique size effect of the nonlinear (rectifying-type contac

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Olivares, Antonio J., Ismael Cosme, Maria Elena Sanchez-Vergara, et al. "Nanostructural Modification of PEDOT:PSS for High Charge Carrier Collection in Hybrid Frontal Interface of Solar Cells." Polymers 11, no. 6 (2019): 1034. http://dx.doi.org/10.3390/polym11061034.

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In this work, we propose poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) material to form a hybrid heterojunction with amorphous silicon-based materials for high charge carrier collection at the frontal interface of solar cells. The nanostructural characteristics of PEDOT:PSS layers were modified using post-treatment techniques via isopropyl alcohol (IPA). Atomic force microscopy (AFM), Fourier-transform infrared (FTIR), and Raman spectroscopy demonstrated conformational changes and nanostructural reorganization in the surface of the polymer in order to tailor hybrid interf

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Haslinger, Michael J., Dmitry Sivun, Hannes Pöhl, et al. "Plasmon-Assisted Direction- and Polarization-Sensitive Organic Thin-Film Detector." Nanomaterials 10, no. 9 (2020): 1866. http://dx.doi.org/10.3390/nano10091866.

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Utilizing Bragg surface plasmon polaritons (SPPs) on metal nanostructures for the use in optical devices has been intensively investigated in recent years. Here, we demonstrate the integration of nanostructured metal electrodes into an ITO-free thin film bulk heterojunction organic solar cell, by direct fabrication on a nanoimprinted substrate. The nanostructured device shows interesting optical and electrical behavior, depending on angle and polarization of incidence and the side of excitation. Remarkably, for incidence through the top electrode, a dependency on linear polarization and angle

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Reddy B, Kumaar Swamy, Sushmitha Veeralingam, Pramod H. Borse, and Sushmee Badhulika. "1D NiO–3D Fe₂O₃ mixed dimensional heterostructure for fast response flexible broadband photodetector." Nanotechnology 33, no. 23 (2022): 235201. http://dx.doi.org/10.1088/1361-6528/ac5838.

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Abstract Conventional heterojunction photodetectors rely on planar junction architecture which suffer from low interfacial contact area, inferior light absorption characteristics and complex fabrication schemes. Heterojunctions based on mixed dimensional nanostructures such as 0D-1D, 1D-2D, 1D-3D etc have recently garnered exceptional research interest owing to their atomically sharp interfaces, tunable junction properties such as enhanced light absorption cross-section. In this work, a flexible broadband UV–vis photodetector employing mixed dimensional heterostructure of 1D NiO nanofibers and

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Li, Dayu, Kai Xu, and Chao Zhang. "Improvement of Photocatalytic Performance by Building Multiple Heterojunction Structures of Anatase–Rutile/BiOI Composite Fibers." Nanomaterials 12, no. 21 (2022): 3906. http://dx.doi.org/10.3390/nano12213906.

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In this study, multiple heterojunction structures of anatase–rutile/Bismuth oxyiodide (BiOI) composite fibers are designed by the combined method of electrospinning and hydrothermal techniques. The influence of different Ti/Bi atomic ratios ([Ti/Bi]) on the nanostructures and photocatalytic properties are investigated. It is found that the morphology of BiOI covered on the TiO2 fiber surface changed with [Ti/Bi] from nanosheets to submicron spheres structures. Additionally, the crystallization of the composite fibers including the phases of anatase, rutile, and BiOI is identified, theses phase

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Zheng, Yuenan, Meihong Fan, Kaiqian Li, et al. "Ultraviolet-induced Ostwald ripening strategy towards a mesoporous Ga2O3/GaOOH heterojunction composite with a controllable structure for enhanced photocatalytic hydrogen evolution." Catalysis Science & Technology 10, no. 9 (2020): 2882–92. http://dx.doi.org/10.1039/d0cy00303d.

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He, Bo, Jing Xu, HuanPo Ning, Hao Xiong, HuaiZhong Xing, and YuMing Qin. "Characterization of Nanostructured n-ZnO/p-Si Heterojunction Prepared by a Simple Sol–Gel Method." International Journal of Nanoscience 15, no. 04 (2016): 1650014. http://dx.doi.org/10.1142/s0219581x16500149.

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The nanostructured ZnO film was prepared on a texturized Si wafer by a simple sol–gel method to fabricate n-ZnO/p-Si heterojunction photoelectric device. The novel sol–gel method is cheap and convenient. The structural, optical and electrical properties of the nanostructured ZnO film were studied by XRD, SEM, XPS, PL, UV–Vis spectrophotometer and Hall effect measurement. The current–voltage (I–V) curve of nanostructured ZnO/p-Si heterojunction device shows good rectifying behavior. Good photoelectric behavior is obtained.

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Kumari, Priyanka, Nupur Bahadur, Lingxue Kong, Luke A. O’Dell, Andrea Merenda, and Ludovic F. Dumée. "Engineering Schottky-like and heterojunction materials for enhanced photocatalysis performance – a review." Materials Advances 3, no. 5 (2022): 2309–23. http://dx.doi.org/10.1039/d1ma01062j.

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Choi, Byeonghoon, Dongwoo Shin, Hee-Seung Lee, and Hyunjoon Song. "Nanoparticle design and assembly for p-type metal oxide gas sensors." Nanoscale 14, no. 9 (2022): 3387–97. http://dx.doi.org/10.1039/d1nr07561f.

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Lin, Haowei, Ao Jiang, Shibo Xing, et al. "Advances in Self-Powered Ultraviolet Photodetectors Based on P-N Heterojunction Low-Dimensional Nanostructures." Nanomaterials 12, no. 6 (2022): 910. http://dx.doi.org/10.3390/nano12060910.

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Self-powered ultraviolet (UV) photodetectors have attracted considerable attention in recent years because of their vast applications in the military and civil fields. Among them, self-powered UV photodetectors based on p-n heterojunction low-dimensional nanostructures are a very attractive research field due to combining the advantages of low-dimensional semiconductor nanostructures (such as large specific surface area, excellent carrier transmission channel, and larger photoconductive gain) with the feature of working independently without an external power source. In this review, a selectio

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Sojka, Zbigniew, Joanna Gryboś, Filip Zasada, Szymon Wierzbicki, Witold Piskorz, and Krzysztof Kruczala. "(Keynote) Experimental and Computational Insights into Electronic Structure and Redox Properties of Bare and Doped Co₃O₄ Nanocrystals of Euhedral Morphology and Their Heterojunctions with Alien Oxides and Carbon Materials." ECS Meeting Abstracts MA2023-02, no. 58 (2023): 2806. http://dx.doi.org/10.1149/ma2023-02582806mtgabs.

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One of the most attractive oxide materials with remarkable record of widespread applications are cobalt spinels and their derivatives obtained by doping with alien redox (3dn) and nonredox (Li) cations or via hybridization with other oxides (CeO2, TiO2, a-Al2O3) or carbon support. They have recently received a great deal of theoretical and practical attention because of an outstanding activity in many redox processes important for photo/electro/catalysis. Among many potential applications, their relevance as promising substitutes for platinum in oxygen reduction reaction (ORR) or oxygen evolut

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Joshi, Siddharth, Mrunmaya Mudigere, L. Krishnamurthy, and G. L. Shekar. "Growth of Horizontal Nanopillars of CuO on NiO/ITO Surfaces." Journal of Nanoscience 2014 (August 28, 2014): 1–6. http://dx.doi.org/10.1155/2014/635308.

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We have demonstrated hydrothermal synthesis of rectangular pillar-like CuO nanostructures at low temperature (~60°C) by selective growth on top of NiO porous structures film deposited using chemical bath deposition method at room temperature using indium tin oxide (ITO) coated glass plate as a substrate. The growth of CuO not only filled the NiO porous structures but also formed the big nanopillars/nanowalls on top of NiO surface. These nanopillars could have significant use in nanoelectronics devices or can also be used as p-type conducting wires. The present study is limited to the surface m

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Zagorac, Dejan, Jelena Zagorac, Milan Pejić, Branko Matović, and Johann Christian Schön. "Band Gap Engineering of Newly Discovered ZnO/ZnS Polytypic Nanomaterials." Nanomaterials 12, no. 9 (2022): 1595. http://dx.doi.org/10.3390/nano12091595.

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We report on a new class of ZnO/ZnS nanomaterials based on the wurtzite/sphalerite architecture with improved electronic properties. Semiconducting properties of pristine ZnO and ZnS compounds and mixed ZnO1−xSx nanomaterials have been investigated using ab initio methods. In particular, we present the results of our theoretical investigation on the electronic structure of the ZnO1−xSx (x = 0.20, 0.25, 0.33, 0.50, 0.60, 0.66, and 0.75) nanocrystalline polytypes (2H, 3C, 4H, 5H, 6H, 8H, 9R, 12R, and 15R) calculated using hybrid PBE0 and HSE06 functionals. The main observations are the possibili

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Lu, Yang-Ming, Chi-Feng Tseng, Bing-Yi Lan, and Chia-Fen Hsieh. "Fabrication of Graphene/Zinc Oxide Nano-Heterostructure for Hydrogen Sensing." Materials 14, no. 22 (2021): 6943. http://dx.doi.org/10.3390/ma14226943.

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In this study, hydrogen (H2) and methane (CH4) were used as reactive gases, and chemical vapor deposition (CVD) was used to grow single-layer graphene on a copper foil substrate. The single-layer graphene obtained was transferred to a single-crystal silicon substrate by PMMA transfer technology for the subsequent growth of nano zinc oxide. The characteristics of CVD-deposited graphene were analyzed by a Raman spectrometer, an optical microscope, a four-point probe, and an ultraviolet/visible spectrometer. The sol–gel method was applied to prepare the zinc oxide seed layer film with the spin-co

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S.M. Yahaya, N. Abdu, I.A. Aliyu, and B. Mukhtar. "Nanostructured materials in agriculture: The influence of bismuth ferrite and graphitic carbon nitride on maize growth performances in Samaru, Nigeria." Journal of Agriculture and Environment 19, no. 2 (2024): 237–53. http://dx.doi.org/10.4314/jagrenv.v19i2.22.

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This study explores the application of nanostructured materials, specifically metal-free graphitic carbon nitride (g-C3N4), bismuth ferrite (BiFeO3), magnesium-doped bismuth ferrite (Bi0.7Mg0.3FeO3), and a heterojunction of g-C3N4 and bismuth ferrite (g-C3N4/BiFeO3), in influencing maize growth and performances in Samaru, Nigeria. The study involves the synthesis and characterization of these nanostructured materials, confirming their structural integrity and stability for photocatalytic applications. The greenhouse experiment employs a range of treatments, including a control (no fertilizatio

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Singh, Shivam, Kenneth Christopher Stiwinter, Jitendra Pratap Singh, and Yiping Zhao. "Glancing Angle Deposition in Gas Sensing: Bridging Morphological Innovations and Sensor Performances." Nanomaterials 15, no. 14 (2025): 1136. https://doi.org/10.3390/nano15141136.

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Glancing Angle Deposition (GLAD) has emerged as a versatile and powerful nanofabrication technique for developing next-generation gas sensors by enabling precise control over nanostructure geometry, porosity, and material composition. Through dynamic substrate tilting and rotation, GLAD facilitates the fabrication of highly porous, anisotropic nanostructures, such as aligned, tilted, zigzag, helical, and multilayered nanorods, with tunable surface area and diffusion pathways optimized for gas detection. This review provides a comprehensive synthesis of recent advances in GLAD-based gas sensor

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Brabec, Christoph J., Thomas Nann, and Sean E. Shaheen. "Nanostructured p–n Junctions for Printable Photovoltaics." MRS Bulletin 29, no. 1 (2004): 43–47. http://dx.doi.org/10.1557/mrs2004.16.

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AbstractBy controlling the morphology of organic and inorganic semiconductors on a molecular scale, nanoscale p–n junctions can be generated in a bulk composite. Such a composite is typically called a bulk heterojunction composite, which can be considered as one virtual semiconductor combining the electrical and optical properties of the individual components. Solar cells are one attractive application for bulk heterojunction composites. Conjugated polymers or oligomers are the favorite p-type semiconducting class for these composites, while for the n-type semiconductor, inorganic nanoparticle

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Novák, J., A. Laurenčíková, P. Eliáš, et al. "Investigation of a nanostructured GaP/MoS₂ p-n heterojunction photodiode." AIP Advances 12, no. 6 (2022): 065004. http://dx.doi.org/10.1063/5.0089842.

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We report on the properties of a GaP/MoS2 heterojunction prepared on a nanocone (NC)-structured GaP substrate and a planar GaP substrate. The nanocone-structured GaP substrate was prepared by the growth of GaP NCs at gold seeds on a ⟨111⟩B GaP substrate at 650 °C by metal organic vapor phase epitaxy. At this growth temperature, most NCs exhibited a hexagonal symmetry with six heavily facetted sides that contained numerous facets, ledges, and edges with a large surface area. A thin Mo layer was deposited on both types of GaP substrates by direct current magnetron sputtering. The Mo layer was th

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Hong, Yang, Jingchao Zhang, and Xiao Cheng Zeng. "Thermal contact resistance across a linear heterojunction within a hybrid graphene/hexagonal boron nitride sheet." Physical Chemistry Chemical Physics 18, no. 35 (2016): 24164–70. http://dx.doi.org/10.1039/c6cp03933b.

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Majhi, Sanjit Manohar, Hu-Jun Lee, Ha-Nui Choi, et al. "Construction of novel hybrid PdO–ZnO p–n heterojunction nanostructures as a high-response sensor for acetaldehyde gas." CrystEngComm 21, no. 34 (2019): 5084–94. http://dx.doi.org/10.1039/c9ce00710e.

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S. Mofarah, Sajjad, Luisa Schreck, Claudio Cazorla, et al. "Highly catalytically active CeO2−x-based heterojunction nanostructures with mixed micro/meso-porous architectures." Nanoscale 13, no. 14 (2021): 6764–71. http://dx.doi.org/10.1039/d0nr08097g.

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The present work reports a template-free approach to fabricate 3D mesoporous CeO<sub>2−x</sub>-based heterojunction nanostructures comprised of holey 2D nanosheets with outstanding densities of active sites that deliver excellent CO conversion performance.

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Murzin, Serguei P. "Formation of ZnO/CuO Heterostructures Based on Quasi-One-Dimensional Nanomaterials." Applied Sciences 13, no. 1 (2022): 488. http://dx.doi.org/10.3390/app13010488.

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Nanostructured metal oxides are of great interest both for advanced research and for a wide range of applications that contribute to the increasing demands of electronics, photonics, catalysis, sensorics, and other high-tech industries and are being actively researched and developed. One-dimensional nanocrystal arrays of copper and zinc oxides have become prominent in optoelectronic devices and energy conversion systems. However, although desirable improved properties have been demonstrated, the morphology of materials containing copper and zinc oxide nanowires is extremely sensitive to synthe

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Melnichenko, Ivan, Eduard Moiseev, Natalia Kryzhanovskaya та ін. "Submicron-Size Emitters of the 1.2–1.55 μm Spectral Range Based on InP/InAsP/InP Nanostructures Integrated into Si Substrate". Nanomaterials 12, № 23 (2022): 4213. http://dx.doi.org/10.3390/nano12234213.

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We study photoluminescence of InP/InAsP/InP nanostructures monolithically integrated to a Si(100) substrate. The InP/InAsP/InP nanostructures were grown in pre-formed pits in the silicon substrate using an original approach based on selective area growth and driven by a molten alloy in metal–organic vapor epitaxy method. This approach provides the selective-area synthesis of the ordered emitters arrays on Si substrates. The obtained InP/InAsP/InP nanostructures have a submicron size. The individual InP/InAsP/InP nanostructures were investigated by photoluminescence spectroscopy at room tempera

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Ghimire, R. R., B. P. Pokhrel, S. P. Gupta, L. P. Joshi, and K. B. Rai. "Optical and Electrical Properties of Homo and Heterojunction Formed by the ZnO/FTO and CuO/ZnO/FTO Nanostructures." Journal of Nepal Physical Society 9, no. 1 (2023): 73–82. http://dx.doi.org/10.3126/jnphyssoc.v9i1.57600.

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The most common materials used to create electrical and optoelectronic devices for a variety of applications including transistor, sensor and detector are semiconductor nanostructures. Combining the nanostructures can result semiconductor homostructure and heterostructure. The homojunction of ZnO/FTO and heterojunction of CuO/ZnO/FTO coated glass substrate are formed using spray pyrolysis technique. The optical band gap for the FTO, ZnO, ZnO/FTO and CuO/ZnO/FTO films calculated using data from UV-visible spectroscopy are 3.629 eV, 3.236 eV, 3.113 eV and 1.456 eV respectively. The observed ohmi

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