PHOTOLUMINESCENCE OF ANODICALLY OXIDIZED POROUS SILICON

被引：10
|
作者：
FILIPPOV, VV [1 ]
PERSHUKEVICH, PP [1 ]
BONDARENKO, VP [1 ]
DOROFEEV, AM [1 ]
机构：
[1] MINSK RADIOENGN INST, MINSK 220600, BELARUS
来源：
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 1994年 / 184卷 / 02期
关键词：
D O I：
10.1002/pssb.2221840231
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
A photoluminescence (PL) study is carried out on porous silicon (PS) layers of 50 to 60% porosity which are anodically oxidized in ethylenglycol-NH4NO3 electrolyte. Such oxidation is found to make the PL intensity stronger and the peak wavelength shorter. The emission of partially linearly polarized light is observed for PS samples under linearly polarized light excitation. Transmission IR and reflectance spectra are recorded to characterize porous silicon. As a result, a strong shift of the absorption band edge and high silicon oxide content are found in PS samples. This shift is supposed to be due to the quantum confinement mechanism, but the features of PL speak in favour of the important role of oxide in the light emission from PS. In particular, the polarization of the emitted light can be due to the oxide-induced elastic strains.
引用
收藏
页码：573 / 580
页数：8
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