Characterization of the absorption edge in crystalline CdS:Cu powder by use of photoacoustic and reflection spectroscopy

被引：32

作者：

Grus, M ^{[1
]}

Sikorska, A ^{[1
]}

机构：

[1] Univ Gdansk, Inst Expt Phys, PL-80952 Gdansk, Poland

来源：

PHYSICA B-CONDENSED MATTER | 1999年 / 266卷 / 03期

关键词：

cadmium sulfide; absorption edge; photoacoustic spectroscopy;

D O I：

10.1016/S0921-4526(98)01290-3

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The CdS polycrystalline powder was doped by diffusion with varying concentrations of Cu. The reflection and supplementary photoacoustic measurements were performed in order to examine the doping effect on the edge of the fundamental absorption band, for these strongly scattering samples. It was demonstrated that the optical threshold energy was independent of the doping concentration in the range 10(-5)-10(-2) at.Cu per at.Cd. On the other hand, the concentration increase was accompanied by a distinct growth in the width of the absorption band tail E-0. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：139 / 145

页数：7

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