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Electrical conductivity and Near-infrared absorption of CuGaSe2 thin films

✍ Scribed by Mansour, B. A. ;El-Hagary, M. A.

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
281 KB
Volume
146
Category
Article
ISSN
0031-8965

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Near-infrared absorption spectra of p-type CuGaTe2 and CuGaSe2 thin films deposited by thermal evaporation were measured at room temperature. Two structures were found in the spectra in the photon energy range from hv=0.4-1.5 eV. One of them is the free carrier absorption below 0.6 eV in which the a

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## Abstract CuGaSe~2~ single crystals were grown by iodine vapour transport method, whereas polycrystalline thin films were obtained by coevaporation technique from three sources. The variation of the hole concentration with temperature of CuGaSe~2~ single crystal in the high temperature region is