INVESTIGATION OF AMORPHOUS A-SI-H A-SI1-XCX-H MULTI-QUANTUM-WELL STRUCTURES

被引：12

作者：

DESETA, M ^{[1
]}

FIORINI, P ^{[1
]}

EVANGELISTI, F ^{[1
]}

ARMIGLIATO, A ^{[1
]}

机构：

[1] CNR,IST LAMEL,I-40126 BOLOGNA,ITALY

来源：

SUPERLATTICES AND MICROSTRUCTURES | 1989年 / 5卷 / 02期

关键词：

Light--Absorption - Magnetooptical Effects - Photoconductivity - Quantum Theory - Silicon Carbide--Thin Films;

D O I：

10.1016/0749-6036(89)90271-1

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

a-Si:H/a-Si1-xCx:H multi-quantum-well structures have been grown and investigated. Optical transmission and electroabsorption measurements show that the optical gap increases with decreasing a-Si:H layer thickness. This behaviour is explained in terms of quantum confinement effects. An increase of the Urbach tail and a decrease of the photoconductivity were also observed with decreasing silicon thickness. Both effects have been attributed to the observed increase of the gap state density.

引用

页码：149 / 152

页数：4

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