TEMPERATURE-DEPENDENCE OF THE ABSORPTION-EDGE IN CDTEO AMORPHOUS THIN-FILMS

被引：2

作者：

ESPINOZABELTRAN, FJ ^{[1
]}

SANCHEZSINENCIO, F ^{[1
]}

ZELAYAANGEL, O ^{[1
]}

LOPEZCRUZ, E ^{[1
]}

GONZALEZHERNANDEZ, J ^{[1
]}

RAMIREZBON, R ^{[1
]}

TORRESDELGADO, G ^{[1
]}

机构：

[1] UNIV SONORA,CTR INVEST FIS,HERMOSILLO 83190,SONORA,MEXICO

来源：

SOLID STATE COMMUNICATIONS | 1992年 / 84卷 / 04期

关键词：

D O I：

10.1016/0038-1098(92)90487-T

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The sorption coefficient of amorphous oxygenated cadmium telluride thin films (a-CdTe:O), grown by a reactive RF sputtering technique, was determined from optical transmission data measured as a function of photon energy in the temperature range of 15-300K. It is found that in the measured energy range the absorption coefficient increases as the temperature decreases. This behaviour can be explained considering contributions from both the acoustic phonons and electron-phonon interaction term to the absorption coefficient. In particular, the former contribution dominates the observed behaviour at lower temperatures, this is probably due to the presence of Te-Te chains in the disordered material.

引用

页码：409 / 411

页数：3

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