VARIATION OF THE ENERGY-GAP WITH COMPOSITION IN AIBIIIC2VI CHALCOPYRITE-STRUCTURE ALLOYS

被引：50
作者：
TINOCO, T
QUINTERO, M
RINCON, C
机构：
[1] Centro de Estudios de Semiconductores, Departamento de Física, Universidad de Los Andes, Mérida
来源：
PHYSICAL REVIEW B | 1991年 / 44卷 / 04期
关键词：
D O I：
10.1103/PhysRevB.44.1613
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The nonlinear variation of the fundamental energy gap E(g) as a function of composition x observed in A(I)B(III)C2VI chalcopyrite-structure alloys is discussed. The downward optical-bowing parameter c observed in these alloys is analyzed in terms of current models given in the literature. A relationship between c and the difference in electronegativities-DELTA-X of the atoms mixed to form the alloy is obtained. Also, an expression to predict the E(g)-vs-x curve for these alloys is proposed and good agreement with experimental data is found.
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页码：1613 / 1615
页数：3
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