Optical properties of amorphous Se films prepared by PECVD

被引：31

作者：

Nagels, P ^{[1
]}

Sleeckx, E ^{[1
]}

Callaerts, R ^{[1
]}

Marquez, E ^{[1
]}

Gonzalez, JM ^{[1
]}

BernalOliva, AM ^{[1
]}

机构：

[1] UNIV CADIZ,PUERTO REAL 11510,CADIZ,SPAIN

来源：

SOLID STATE COMMUNICATIONS | 1997年 / 102卷 / 07期

关键词：

optical properties;

D O I：

10.1016/S0038-1098(97)00053-7

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The optical transmission spectrum of amorphous Se films prepared by plasma-enhanced chemical vapour deposition was measured over the 500 to 2000 nm spectral region. The absorption coefficient values plotted vs photon energy according to Tauc's law yielded an optical gap, E-g, of 1.94 eV. The temperature dependence of E-g was measured between 13 K and 300 K and was found to be well described within Fan's one-phonon approximation. Photo-induced darkening of the optical gap was studied by illumination at 13 K and 77 K. (C) 1997 Elsevier Science Ltd.

引用

页码：539 / 543

页数：5

共 9 条

[1]

FAN HY, 1950, PHYS REV, V78, P83

[2] CALCULATION OF THE THICKNESS AND OPTICAL-CONSTANTS OF AMORPHOUS ARSENIC SULFIDE FILMS FROM THEIR TRANSMISSION SPECTRA [J].