TIME-RESOLVED DECAY OF THE BLUE EMISSION IN POROUS SILICON

被引：33

作者：

HARRIS, CI

SYVAJARVI, M

BERGMAN, JP

KORDINA, O

HENRY, A

MONEMAR, B

JANZEN, E

机构：

[1] Department of Physics and Measurement Technology, Linköping University

来源：

APPLIED PHYSICS LETTERS | 1994年 / 65卷 / 19期

关键词：

D O I：

10.1063/1.112704

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The technologically interesting blue emission from porous silicon has been studied using time-resolved photoluminescence. In as-etched samples prepared using the standard electrochemical method, the decay time is shown to be extremely fast (tau=0.86 ns). This decay time remains unchanged from room temperature dawn to 77 K. The porous material giving the blue emission is unstable and degrades rapidly under UV photoexcitation. A corresponding increase in red intensity with decreasing blue intensity is observed, demonstrating a correlation between the two types of emission. Under ambient light conditions at room temperature the material is more stable and remains emissive for a number of days. (C) 1994 American Institute of physics.

引用

页码：2451 / 2453

页数：3

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