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Jiang, T., Li, X., Bujoli-Doeuff, M., Gautron, E., Cario, L., Jobic, S. & Gautier, R. (2016) Modulation of Defects in Semiconductors by Facile and Controllable Reduction: The Case of p-type CuCrO2 Nanoparticles. Inorg. Chem. 55 7729–7733. 
Added by: Richard Baschera (2016-10-06 14:25:36)   Last edited by: Richard Baschera (2016-10-07 09:13:01)
Type de référence: Article
DOI: 10.1021/acs.inorgchem.6b01169
Numéro d'identification (ISBN etc.): 0020-1669
Clé BibTeX: Jiang2016a
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Catégories: MIOPS, PMN
Mots-clés: Delafossite, nanocrystals, oxide, Oxygen vacancies, performance, sensitized solar-cells, thin-films, visible-light
Créateurs: Bujoli-Doeuff, Cario, Gautier, Gautron, Jiang, Jobic, Li
Collection: Inorg. Chem.
Consultations : 9/621
Indice de consultation : 4%
Indice de popularité : 1%
Résumé     
Optical and electrical characteristics of solid materials are well-known to be intimately related to the presence of intrinsic or extrinsic defects. Hence, the control of defects in semiconductors is of great importance to achieve specific properties, for example, transparency and conductivity. Herein, a facile and controllable reduction method for modulating the defects is proposed and used for the case of p-type delafossite CuCrO2 nanoparticles. The optical absorption in the infrared region of the CuCrO2 material can then be fine-tuned via the continuous reduction of nonstoichiometric Cu-II, naturally stabilized in small amounts. This reduction modifies the concentration of positive charge carriers in the material, and thus the conductive and reflective properties, as well as the flat band potential. Indeed, this controllable reduction methodology provides a novel strategy to modulate the (opto-) electronic characteristics of semiconductors.
  
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