Exciton Absorption Spectra of Cs2CdI4 and Rb2CdI4 Ferroelastic Solid Solutions

被引：1

作者：

Miloslavskii, V. K. ^{[1
]}

Yunakova, O. N. ^{[1
]}

Kovalenko, E. N. ^{[2
]}

机构：

[1] Kharkov Natl Univ, UA-61077 Kharkov, Ukraine

[2] Kharkov Natl Univ Radioelect, UA-61166 Kharkov, Ukraine

来源：

OPTICS AND SPECTROSCOPY | 2010年 / 109卷 / 06期

关键词：

Spectral Position; Exciton State; Exciton Band; Interband Absorption; Coulomb Coupling;

D O I：

10.1134/S0030400X10120131

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The exciton absorption spectra of thin films of (Cs1-xRbx)(2)CdI4 solid solutions have been investigated and the refractive index n(lambda) in their transparency window in the concentration range of 0 <= x <= 1 has been measured. The exciton-band parameters and optical permittivity e(infinity)(x) have been found to linearly depend on the concentration. It is established that excitons are incorporated into the CdI2 sublattice of the solid solutions and belong to intermediate-coupling ones. The characteristics of excitons in ferroelastics are compared with the corresponding parameters for CdI2, RbI, and CsI, which are used as components to synthesize ternary compounds.

引用

页码：899 / 904

页数：6