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Sheets, W. C., Stampler, E. S., Kabbour, H., Bertoni, M. I., Cario, L., Mason, T. O., Marks, T. J. & Poeppelmeier, K. R. (2007) Facile synthesis of BiCuOS by hydrothermal methods. Inorg. Chem. 46 10741–10748.
Added by: Laurent Cournède (2016-03-10 22:02:28) |
| Type de référence: Article DOI: 10.1021/ic7014622 Numéro d'identification (ISBN etc.): 0020-1669 Clé BibTeX: Sheets2007 Voir tous les détails bibliographiques  |
Catégories: PMN Mots-clés: Band-gap, chemistry, Conductivity, Copper, crystal-structure, electronic-structure, layered-oxysulfide, optical-properties, Oxides, Semiconductor Créateurs: Bertoni, Cario, Kabbour, Marks, Mason, Poeppelmeier, Sheets, Stampler Collection: Inorg. Chem. |
Consultations : 1/565
Indice de consultation : 4% Indice de popularité : 1% |
| Résumé |
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BiCuOS, which is isostructural to the layered rare-earth oxysulfides LnCuOS (Ln = La-Eu), was synthesized by a single-step hydrothermal reaction at low temperature (250 degrees C) and pressure ({<}20 atm). Particular emphasis is placed on how the selection of the proper reaction conditions, such as temperature and pH, achieves a mutual high solubility of the metal-oxide reactants, Bi2O3 and Cu2O, and thus generates BiCuOS in a good yield. The optical and electrical properties of BiCuOS were measured to determine the influence of replacing a rare-earth cation with bismuth. The electrical conductivity of BiCuOS is increased over that of certain layered rare-earth oxysulfides, LnCuOS (Ln = La, Pr, and Nd), and is similar to that of the cerium members, CeCuOS and CeAgOS. Band structure calculations reveal that, similar to other potential transparent conductors containing sixth-row elements, relativistic effects significantly lower the energy of the conduction band, and thus narrow the optical band gap. These low-energy conduction bands are responsible for the electrical and optical properties of BiCuOS.
Added by: Laurent Cournède |