TEMPERATURE-DEPENDENCE OF THE ABSORPTION-EDGE IN CUGAS2

被引:15
|
作者
HORIG, W [1 ]
NEUMANN, H [1 ]
RECCIUS, E [1 ]
WEINERT, H [1 ]
KUHN, G [1 ]
SCHUMANN, B [1 ]
机构
[1] KARL MARX UNIV,ARBEITSGEMEINSCHAFT A3B5 HALBLEITER,FACHBEREICH KRISTALLOG,DDR-701 LEIPZIG,GER DEM REP
来源
关键词
BAND STRUCTURE;
D O I
10.1002/pssa.2210510105
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Temperature dependence has been determined by absorption measurements in single crystals and thin films. A linear charge of the gap energy E//g with a temperature coefficient of dE//g/dT equals minus (2. 2 plus or minus 0. 2) multiplied by 10** minus **4eV/K is found in the temperature range from 80 to 300 K. The downshift in the absolute values of dE//g/dT of the I-III-VI//2 and I-VII compounds compared to their II-VI analogs can be explained by the p-d hybridization of the uppermost valence band.
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页码:57 / 62
页数:6
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