Structure and electrical properties of sputtered lithium cobaltite thin films
| Autor: | K. J. Rao, Philippe Vinatier, Hanane Benqlilou-Moudden, Alain Levasseur, Gérard Couturier |
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| Přispěvatelé: | Solid State and Structural Chemistry Unit, Material Research Center, Indian Institute of Science, Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB), Centre de physique moléculaire optique et hertzienne (CPMOH), Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 |
| Jazyk: | angličtina |
| Rok vydání: | 2002 |
| Předmět: |
Mineralogy
02 engineering and technology 010402 general chemistry 01 natural sciences chemistry.chemical_compound Sputtering Electrical resistivity and conductivity Band diagram General Materials Science Thin film Electronic band structure Microstructure Condensed matter physics Chemistry Mechanical Engineering [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Nanocrystalline material 0104 chemical sciences Amorphous solid Cobaltite X-ray diffraction Mechanics of Materials Electrical properties 0210 nano-technology |
| Zdroj: | Materials Research Bulletin Materials Research Bulletin, Elsevier, 2002, 37 (7), pp.1353-1367. ⟨10.1016/S0025-5408(02)00756-0⟩ |
| ISSN: | 0025-5408 1873-4227 |
| DOI: | 10.1016/S0025-5408(02)00756-0⟩ |
| Popis: | International audience; LixCoOy films with x2 have been prepared by radio-frequency (rf) sputtering from high temperature (HT) LiCoO2 targets. Their structures have been examined with high resolution electron microscopy. Conductivities have been studied between 77 and 400 K. The electrochemical behaviour of film electrodes have been investigated with Li/LiClO4-PC/LixCoOy cells. The annealed films consist of nanocrystalline domains with amorphous boundaries. Electrical conductivities appear to arise from variable-range hopping (VRH) of holes. The films form good electrodes with operating potentials between 2.7 and 3.8 V. The observations have been discussed on the basis of a tentative and heuristic molecular orbital based energy band diagram. |
| Databáze: | OpenAIRE |
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