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Relevant bibliographies by topics / Cation doping

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Academic literature on the topic 'Cation doping'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 February 2022

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Journal articles on the topic "Cation doping"

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Meffert, Matthias, Heike Störmer та Dagmar Gerthsen. "Dopant-Site Determination in Y- and Sc-Doped (Ba0.5Sr0.5)(Co0.8Fe0.2)O3−δby Atom Location by Channeling Enhanced Microanalysis and the Role of Dopant Site on Secondary Phase Formation". Microscopy and Microanalysis 22, № 1 (2015): 113–21. http://dx.doi.org/10.1017/s1431927615015536.

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Abstract(Ba0.5Sr0.5)(Co0.8Fe0.2)O3−δ(BSCF) is a promising material with mixed ionic and electronic conductivity which is considered for oxygen separation membranes. Selective improvement of material properties, e.g. oxygen diffusivity or suppression of secondary phase formation, can be achieved by B-site doping. This study is concerned with the formation of Co-oxide precipitates in undoped BSCF at typical homogenization temperatures of 1,000°C, which act as undesirable nucleation sites for other secondary phases in the application-relevant temperature range. Y-doping successfully suppresses Co

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Zhang, X., K. W. Yip, and C. K. Ong. "Cation doping in YBa2Cu4O8." Physica C: Superconductivity 241, no. 3-4 (1995): 329–35. http://dx.doi.org/10.1016/0921-4534(94)02381-6.

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Rohloff, Martin, Björn Anke, Dennis Wiedemann, et al. "Synthesis and Doping Strategies to Improve the Photoelectrochemical Water Oxidation Activity of BiVO4 Photoanodes." Zeitschrift für Physikalische Chemie 234, no. 4 (2020): 655–82. http://dx.doi.org/10.1515/zpch-2019-1476.

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AbstractBiVO4 is one of the most investigated and most promising metal oxide based photoanode materials for photoelectrochemical (PEC) water oxidation. Although it has several advantages (suitable band gap around 2.4 eV, suitable valence-band position for water oxidation, low toxicity, high abundance), it suffers from slow charge-carrier transport properties, high surface recombination, and limited water-oxidation activity. In the present work, we review the synthesis and doping strategies that we developed in the last years to improve the PEC performance of BiVO4 photoanodes. Strategies rangi

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Izawa, Chihiro, Takeshi Kobayashi, Kazuhisa Kishida, and Tomoaki Watanabe. "Ammonothermal Synthesis and Photocatalytic Activity of Lower Valence Cation-Doped LaNbON2." Advances in Materials Science and Engineering 2014 (2014): 1–5. http://dx.doi.org/10.1155/2014/465720.

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Highly crystalline pure perovskite-type LaNbON2powders were synthesized in supercritical ammonia using sodium hydroxide as an oxygen source. Additionally, doping LaNbON2with cations of lower valence than that of the parent cation was performed to inhibit reduction of Nb5+. Various characterization methods indicated that crystallinity, particle morphology, and absorption edge of the product, that is, the factors possibly affecting photocatalytic activity, were not significantly changed by the doping of a lower-valence cation. Nevertheless, the doped LaNbON2synthesized using the ammonothermal me

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Hiraga, Keijiro, Hidehiro Yoshida, Koji Morita, and Byung Nam Kim. "Enhanced Densification and Grain-Size Refinement in Cation-Doped Tetragonal Zirconia." Advances in Science and Technology 62 (October 2010): 227–31. http://dx.doi.org/10.4028/www.scientific.net/ast.62.227.

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In tetragonal zirconia, possibility is investigated of densification with finer grain sizes under the combination of doping and sintering in air. The materials used are CIP'ed compacts of 3-mol%-yttria-stabilized tetragonal zirconia (3Y-TZP) doped with a small amount of cations. For a given sintering temperature and initial density of the compacts, while the doped cations enhances densification in the latest stage of sintering, the effect is different in grain growth during densification: a doped cation tended to enhance grain growth, whereas the other cations tended to suppress grain growth.

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Sadykov, Vladislav, Vladimir V. Kriventsov, Ella M. Moroz, et al. "Ceria-Zirconia Nanoparticles Doped with La or Gd: Effect of the Doping Cation on the Real Structure." Solid State Phenomena 128 (October 2007): 81–88. http://dx.doi.org/10.4028/www.scientific.net/ssp.128.81.

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The real structure of nanocrystalline CeO2-ZrO2 (Ce:Zr=1:1) systems prepared via the polymerized polyester precursor (Pechini) route and doped with La3+ or Gd3+ cations, up to 30 at.%, was studied by X-ray powder diffraction, EXAFS and Raman spectroscopy and the surface features characterized by XPS and SIMS. Undoped CeO2-ZrO2 system revealed nanoscale heterogeneity, perhaps due to the co-existence of Zr- or Ce-enriched domains. With large La3+ dopant the system remains bi-phasic within the studied ranges of composition, incorporation of the smaller Gd3+ cation stabilizes the single-phase soli

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Badawy, Abdelrahman A., Ahmed M. Rashad, Shaimaa M. Ibrahim, and Sahar M. El-Khouly. "The Influence of CeO2-Doping of Nanosized Cadmium Ferrite on Catalytic Conversion of Ethanol." Recent Innovations in Chemical Engineering (Formerly Recent Patents on Chemical Engineering) 13, no. 2 (2020): 156–69. http://dx.doi.org/10.2174/2405520412666190919155906.

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Background: The role of CeO2-doping (0.75-3 mol%) and calcination temperature on solid-solid interaction between ferric and cadmium oxides yielding cadmium ferrites was examined. Methods and Results: The results exposed that ceria improves the ferrite formation by heating at 600-700ºC via the dissolution of some dopant cation in the lattice of CdO with the subsequent creation of anionic vacancies and/or formation of higher valency cadmium cation (Cd(2+δ)+). SBET of solids calcined at 500oC increased by CeO2-doping, while opposite trend for solids calcined at 600 and 700oC. The magnetic hystere

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Petralanda, Urko, Luca De Trizio, Graziella Gariano, Roberto Cingolani, Liberato Manna, and Sergey Artyukhin. "Triggering Cation Exchange Reactions by Doping." Journal of Physical Chemistry Letters 9, no. 17 (2018): 4895–900. http://dx.doi.org/10.1021/acs.jpclett.8b02083.

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Asaf, U., I. Felner, and U. Yaron. "Combinations of anion and cation doping." Physica C: Superconductivity 211, no. 1-2 (1993): 45–48. http://dx.doi.org/10.1016/0921-4534(93)90727-8.

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Frayret, Christine, Antoine Villesuzanne, Michel Pouchard, Fabrice Mauvy, Jean Marc Bassat, and Jean Claude Grenier. "A Density Functional Study of Oxygen Mobility in Ceria-Based Materials." Defect and Diffusion Forum 323-325 (April 2012): 233–38. http://dx.doi.org/10.4028/www.scientific.net/ddf.323-325.233.

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In CeO2-based solid electrolytes, it has been shown that point defects are directly responsible for oxygen ionic conduction. The ionic conductivity is strongly affected by the anion vacancy concentration which is enhanced by doping with aliovalent cations. When rare earth sesquioxides such as La2O3, Gd2O3, Sm2O3, Y2O3 are added to CeO2, the dopant cation substitutes for the cerium ion, and oxygen vacancies are created for charge compensation. Incorporation of trivalent dopants into CeO2 at the Ce4+ sites can be depicted by the following defect reaction (expressed in Kröger-Vink notation):

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Dissertations / Theses on the topic "Cation doping"

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Rashidi, Nazanin. "Cation and anion doping of ZnO thin films by spray pyrolysis." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:e8261559-8901-409d-8d08-a3fc04b6d734.

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ZnO is an n-type semiconducting material with high optical transparency in the visible range (400 - 750 nm) of the electromagnetic spectrum. When doped with group 13 or 14 metal oxides, ZnO exhibits almost metallic electrical conductivity. ZnO thin films have been recognised as promising alternative material for the currently widely-used but expensive indium oxide in the form of indium tin oxide (ITO), in terms of their low cost and the high abundance of zinc. At the moment, even the best solution-processed ZnO films still can not compete for ITO replacement especially in solar energy utilizat

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Farrell, Jason. "The influence of cation doping on the electronic properties of Sr₃Ru₂O₇." Thesis, St Andrews, 2008. http://hdl.handle.net/10023/689.

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Deng, Honghua Materials Science &amp Engineering Faculty of Science UNSW. "Effect of cation addition on cellular response and bone ingrowth into three dimensional porous bioceramics." Awarded by:University of New South Wales. Materials Science & Engineering, 2008. http://handle.unsw.edu.au/1959.4/43733.

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The success of orthopaedic implants fixed in the skeletal system using bone ingrowth into porous surfaces is critically dependent on the extent and quality of the initial bone ingrowth and the subsequent long-term maintenance of the bone within the porous structure. Biologically-significant elements (Ca, Mg, Mn) were incorporated at concentrations up to 5 mol% in solid solution in yttia-stabilised tetragonal zirconia polycrystal (3YTZP), whilst controlling microstructure and phase composition, to investigate the effect of ceramic chemistry on cellular behaviour in vitro and bone ingrowth into

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IGNATIOUS, FRANCIS-XAVIER. "Insertion de cations organiques dans le polyacetylene par voie chimique." Université Louis Pasteur (Strasbourg) (1971-2008), 1989. http://www.theses.fr/1989STR13035.

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Mecanisme du dopage par des cations organiques et cinetique d'insertion des cations dans le film. Pour un meme taux de dopage, la conductivite diminue lorsque la taille du cation insere augmente. La stabilite intrinseque des complexe (ch)::(x)/r::(4)n**(+), bonne a temperature ordinaire, est fortement activee a 100**(o)c (mecanisme de degradation du type hofman)

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Anzai, Akihiko. "Design and development of calcium titanate photocatalysts for endergonic reactions with water activation." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263726.

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京都大学<br>新制・課程博士<br>博士(人間・環境学)<br>甲第23265号<br>人博第980号<br>京都大学大学院人間・環境学研究科相関環境学専攻<br>(主査)教授吉田寿雄, 教授田部勢津久, 教授中村敏浩<br>学位規則第4条第1項該当<br>Doctor of Human and Environmental Studies<br>Kyoto University<br>DFAM

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Han, Donglin. "Doping Behavior of Cations in Perovskite-type Oxide Materials for Protonic Ceramic Fuel Cells." 京都大学 (Kyoto University), 2011. http://hdl.handle.net/2433/151976.

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Ohl, Wilson Jos? "Efeito da G?lia como aditivo de sinteriza??o em eletr?litos cer?micos ? base de c?ria sintetizados pelo m?todo de complexa??o de c?tions." Universidade Federal do Rio Grande do Norte, 2013. http://repositorio.ufrn.br:8080/jspui/handle/123456789/12851.

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Made available in DSpace on 2014-12-17T14:07:19Z (GMT). No. of bitstreams: 1 WilsonJO_TESE.pdf: 5377189 bytes, checksum: 886cb0d3eb97075a3db2f3b7c1a15af0 (MD5) Previous issue date: 2013-10-21<br>Fuel cells are considered one of the most promising ways of converting electrical energy due to its high yield and by using hydrogen (as fuel) which is considered one of the most important source of clean energy for the future. Rare earths doped ceria has been widely investigated as an alternative material for the electrolyte of solid oxide fuel cells (SOFCs) due to its high ionic conductivity a

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Li, Fenghong. "Novel dopants for n-type doping of electron transport materials: cationic dyes and their bases." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2005. http://nbn-resolving.de/urn:nbn:de:swb:14-1115196100406-90648.

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The history of silicon technology showed that controlled doping was a key step for the realization of e®ective, stable and reproducible devices. When the conduction type was no longer determined by impurities but could be controlled by doping, the breakthrough of classical microelectronics became possible. Unlike inorganic semiconductors, organic dyes are up to now usually prepared in a nominally undoped form. However, controlled and stable doping is desirable in many organic-based devices as well. If we succeed in shifting the Fermi level towards the transport states, this could reduce ohmic

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Werner, Ansgar. "N-type doping of organic thin films using a novel class of dopants." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2003. http://nbn-resolving.de/urn:nbn:de:swb:14-1065713047781-36629.

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I present a new approach to stable n-type doping of organic matrices using organic dopants. In order to circumvent stability limitations of strong organic donors, I produce the donor from a stable precursor compound in situ. As an example, the cationic dye pyronin B chloride is studied as a dopant in an 1,4,5,8-naphthalene tetracarboxylic dianhydride (NTCDA) matrix. A field effect and conductivity study of a series of doped NTCDA samples is carried out. It proves the increase of the electron density with the doping concentration. Conductivities up to 1.9*10^-4 S/cm are obtained for doped NTCDA

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Brazda, Petr. "Preparation of Fe2O3/SiO2 nanocomposites from molecular precursor by the sol-gel method and the doping of iron (III) by trivalent metal cations." Strasbourg, 2009. http://www.theses.fr/2009STRA6289.

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Les travaux que nous présentons dans cette thèse se concentrent sur la préparation de nanocomposite de silice sol-gel amorphe comme matrice de synthèse de nanocristaux de epsilon-Fe2O3 purs. La souplesse du procédé de synthèse nous a permis d’envisager et de réaliser la substitution partielle et raisonnée du fer par l’aluminium et gallium. Pour cela nous avons élaboré les nanocomposites Al0. 25Fe1. 75O3/SiO2, Al0. 50Fe1. 50O3/SiO2, Al0. 75Fe1. 25O3/SiO2, Ga0. 25Fe1. 75O3/SiO2, Ga0. 50Fe1. 50O3/SiO2 and Ga0. 75Fe1. 25O3/SiO2. Nous avons pu grâce à la maitrise de la synthèse du précurseur et des

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Book chapters on the topic "Cation doping"

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Yoshida, N., T. Tatsuki, T. Tamura, et al. "Effects of High-Valency Cation Doping in HgBa2Ca2Cu3Oy." In Advances in Superconductivity X. Springer Japan, 1998. http://dx.doi.org/10.1007/978-4-431-66879-4_78.

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Yuhara, S., Yorinobu Takigawa, Tokuteru Uesugi, and Kenji Higashi. "Effect of Co-Doping Cation on Phase Stability of Zirconia Bioceramics in Hot Water." In Advanced Materials Research. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-463-4.773.

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Sadykov, Vladislav A., Vladimir V. Kriventsov, Ella M. Moroz, et al. "Ceria-Zirconia Nanoparticles Doped with La or Gd: Effect of the Doping Cation on the Real Structure." In Solid State Phenomena. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/3-908451-38-8.81.

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François, B., C. Mathis, and F. Ignatious. "Chemical n Doping of Polyacetylene with Alkaline and Tetraalkyl Ammonium Cations." In Springer Series in Solid-State Sciences. Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-83833-0_4.

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Takigawa, Yorinobu, Yukihisa Naka, and Kenji Higashi. "Effect of Cation Dopant on Phase Stability of Zirconia Bioceramics in Hot Water." In Advances in Science and Technology. Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/3-908158-05-2.97.

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Chen, Hongyin, Jing Ding, Weilong Wang, and Jianfeng Lu. "Water sorption characteristics of MCM-41 with post modification by Al grafting and cations doping." In Advances in Energy Equipment Science and Engineering. CRC Press, 2015. http://dx.doi.org/10.1201/b19126-540.

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Conference papers on the topic "Cation doping"

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Huang, Xiao. "Effect of Co-Doping on Microstructure, Thermal and Mechanical Properties of Ternary Zirconia-Based Thermal Barrier Coating Materials." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-59007.

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7YSZ (yttria stabilized zirconia) was co-doped with metal oxides of different valence, ionic radius and mass in order to investigate microstructural and property changes as a result of co-doping. Mechanical alloying process was used to produce the powder blends which were subsequently sintered at 1500°C for 120 hours. The results from SEM, XRD and DSC showed that the microstructures of the co-doped ternary oxides were affected by the amount of oxygen vacancies in the system, the co-dopant cation radius and mass. Increasing the number of oxygen vacancies by the addition of trivalent co-dopant (

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Wu, Chuan, Hong Li, Feng Wu, and Xuejie Huang. "Improve Cycling Performance of Spinel LiMn2O4 by Cation Doping." In Proceedings of the 7th Asian Conference. WORLD SCIENTIFIC, 2000. http://dx.doi.org/10.1142/9789812791979_0037.

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KAMADA, KAI, SHINTARO UDO, and YASUMICHI MATSUMOTO. "CATION DOPING INTO THE SODIUM BORATE GLASS USING THE SOLID OXIDE ELECTROCHEMICAL DOPING METHOD." In Proceedings of the 7th Asian Conference. WORLD SCIENTIFIC, 2000. http://dx.doi.org/10.1142/9789812791979_0030.

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Yang, Kan, and Peter R. Menge. "Improving NaI:TI with non-luminescent cation co-doping (Conference Presentation)." In Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVIII, edited by Michael Fiederle, Arnold Burger, Larry Franks, and Ralph B. James. SPIE, 2016. http://dx.doi.org/10.1117/12.2238175.

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SHEN, R. F., F. Y. WANG, F. C. XU, and R. XIE. "VALENCY-VARIABLE CATION Co-DOPING AND Sn-Cl-DOPING IN Bi-SYSTEM 2223 PHASE SUPERCONDUCTOR." In Proceedings of the International Symposium on Solid State Chemistry in China. WORLD SCIENTIFIC, 2002. http://dx.doi.org/10.1142/9789812776846_0015.

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YAMASHITA, SHUICHI, KAI KAMADA, and YASUMICHI MATSUMOTO. "APPLICATION OF ION-CONDUCTING MICROELECTRODES FOR CATION DOPING INTO OXIDE MATERIALS." In Proceedings of the 1st International Discussion Meeting. WORLD SCIENTIFIC, 2007. http://dx.doi.org/10.1142/9789812706904_0006.

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Xu, L., S. Shibayama, K. Izukashi, et al. "General relationship for cation and anion doping effects on ferroelectric HfO2 formation." In 2016 IEEE International Electron Devices Meeting (IEDM). IEEE, 2016. http://dx.doi.org/10.1109/iedm.2016.7838477.

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Su, Z. M., R. S. Wang, Z. L. Shi, D. M. Xie, and Z. H. Huang. "The influence of lithium cation doping in polyacence on its conductive property." In International Conference on Science and Technology of Synthetic Metals. IEEE, 1994. http://dx.doi.org/10.1109/stsm.1994.834845.

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Zhang, Jiatao. "Cation coordination reactions on nanocrystals: surface/interface, doping control and advanced photocatalysis applications (Conference Presentation)." In Solar Hydrogen and Nanotechnology XI, edited by Chung-Li Dong. SPIE, 2016. http://dx.doi.org/10.1117/12.2237717.

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Hossain, Md Rakib, Milon, Syed Mahedi Hasan, et al. "The planar B6 cluster as a motif for doping metal cation (Al3+): A DFT study." In 2017 2nd International Conference on Electrical & Electronic Engineering (ICEEE). IEEE, 2017. http://dx.doi.org/10.1109/ceee.2017.8412919.

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