MICROSTRUCTURE OF VISIBLE-LIGHT EMITTING POROUS SILICON

被引：42
作者：
NISHIDA, A
NAKAGAWA, K
KAKIBAYASHI, H
SHIMADA, T
机构：
[1] Central Research Laboratory, Hitachi Ltd, Kokubunji Tokyo
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1992年 / 31卷 / 9A期
关键词：
POROUS SI; PARTICLES; HR-SEM; HR-TEM; LATTICE IMAGE; QUANTUM SIZE EFFECT;
D O I：
10.1143/JJAP.31.L1219
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The relationship between the microstructure and photoluminescence of porous Si is investigated. High-resolution scanning electron microscopy shows that porous Si has a small-particle structure, with particle sizes ranging from several nm to several tens of nm. Transmission electron microscopy shows that these particles are composed of single-crystal Si spheres covered with an oxide layer. Porous Si with larger particles emits light with longer wavelengths. This suggests that the effective photoluminescence of porous Si is due to three-dimensional carrier confinement in quantum boxes.
引用
收藏
页码：L1219 / L1222
页数：4
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