Structure and electrical properties of sputtered lithium cobaltite thin films
RAO, Kalya J.
Solid State and Structural Chemistry Unit, Material Research Center
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
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Solid State and Structural Chemistry Unit, Material Research Center
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
RAO, Kalya J.
Solid State and Structural Chemistry Unit, Material Research Center
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
< Reduce
Solid State and Structural Chemistry Unit, Material Research Center
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Language
en
Article de revue
This item was published in
Materials Research Bulletin. 2002, vol. 37, n° 7, p. 1353-1367
Elsevier
English Abstract
LixCoOy films with x<1 and y>2 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 ...Read more >
LixCoOy films with x<1 and y>2 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.Read less <
Spanish Keywords
X-ray diffraction
Electrical properties
Microstructure
Origin
Hal imported