BLUE PHOTOLUMINESCENCE FROM RAPID THERMALLY OXIDIZED POROUS SILICON FOLLOWING STORAGE IN AMBIENT AIR

被引：44

作者：

LONI, A

SIMONS, AJ

CALCOTT, PDJ

CANHAM, LT

机构：

[1] Defense Research Agency, Malvern

来源：

JOURNAL OF APPLIED PHYSICS | 1995年 / 77卷 / 07期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.358587

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have studied the temporal variation of the visible photoluminescence from rapid thermally oxidized porous silicon prepared from n+ substrates. In contrast to the red (slow band) emission, which is observable immediately after high-temperature oxidation, the blue (fast band) emission is shown to become prevalent only after samples are stored in ambient air. The intensity of the blue emission increases with progressive aging, the magnitude of the increase being dependent on the temperature at which the material is oxidized. Thermal treatment of aged rapid thermally oxidized material can reduce and even quench the blue photoluminescence. Quenching is reversible in that the photoluminescence re-appears after further aging at room temperature. © 1995 American Institute of Physics.

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页码：3557 / 3559

页数：3

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