OPTICAL-ABSORPTION EVIDENCE OF A QUANTUM SIZE EFFECT IN POROUS SILICON

被引：163

作者：

SAGNES, I ^{[1
]}

HALIMAOUI, A ^{[1
]}

VINCENT, G ^{[1
]}

BADOZ, PA ^{[1
]}

机构：

[1] UNIV JOSEPH FOURIER,F-38041 GRENOBLE,FRANCE

来源：

APPLIED PHYSICS LETTERS | 1993年 / 62卷 / 10期

关键词：

D O I：

10.1063/1.108773

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

This study presents optical transmission measurements performed on free-standing homogeneous porous silicon (PS) films of different porosities and substrate doping levels. The absorption coefficient curves deduced from these measurements, taking into account the total quantity of matter in the PS film, exhibit significant blue shift (up to 500 meV). These shifts, well correlated with the crystallite size variations with porosity and substrate doping observed by electron microscopy and gas adsorption experiments, are attributed to quantum size effects in the silicon microcrystallites.

引用

页码：1155 / 1157

页数：3