Temperature dependence of the fundamental absorption edge in CuGa3Se5

被引：24

作者：

Marín, G ^{[1
]}

Rincón, C ^{[1
]}

Wasim, SM ^{[1
]}

Pérez, GS ^{[1
]}

Molina, IM ^{[1
]}

机构：

[1] Univ Los Andes, Fac Ciencias, Dept Fis, Ctr Estudios Semiconductores, Merida 5101, Venezuela

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1999年 / 283卷 / 1-2期

关键词：

CuGa3Se5; ordered vacancy compound; optical properties; energy gap; free exciton binding energy; electron and hole effective masses;

D O I：

10.1016/S0925-8388(98)00878-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

From the study of the temperature dependence of the optical absorption spectra, the energy gap of the ordered vacancy compound CuGa3Se5 between 10 and 300 K are calculated using the model proposed by Elliot (Phys. Rev. 108 (1957) 1384). This variation is analyzed by using the semi-empirical relation suggested by Manoogian and Woolley (Can. J. Phys. 62 (1984) 285). The temperature variation of the free exciton binding energy, the Debye temperature, the dielectric constant, and the effective masses of free excitons, electrons and holes are estimated from the adjustable parameters of these models. (C) 1999 Published by Elsevier Science S.A.

引用

页码：1 / 4

页数：4

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