VISIBLE ELECTROLUMINESCENCE FROM POROUS SILICON

被引：597
作者：
KOSHIDA, N
KOYAMA, H
机构：
[1] Division of Electronic and Information Engineering, Faculty of Technology, Tokyo University of Agriculture and Technology, Koganei
来源：
APPLIED PHYSICS LETTERS | 1992年 / 60卷 / 03期
关键词：
D O I：
10.1063/1.106652
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
It is demonstrated that photoluminescent porous Si (PS) layers exhibit definitely visible electroluminescence (EL). The PS layers were formed by anodization of single-crystal nondegenerate p-type Si wafers in an HF solution. The experimental EL cells are of the form semitransparent metal/PS layer/p-type Si/Al electrode. These cells show a rectifying junction behavior. When the forward current density reaches a certain value, stable visible (orange) light is uniformly emitted through a semitransparent electrode. A possible explanation of this is the radiative transition due to electron and hole injection into quantized states in PS.
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页码：347 / 349
页数：3
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