FAST AND SLOW VISIBLE LUMINESCENCE BANDS OF OXIDIZED POROUS SI

被引：133

作者：

KOVALEV, DI ^{[1
]}

YAROSHETZKII, ID ^{[1
]}

MUSCHIK, T ^{[1
]}

PETROVAKOCH, V ^{[1
]}

KOCH, F ^{[1
]}

机构：

[1] TECH UNIV MUNICH,DEPT PHYS E16,D-85747 GARCHING,GERMANY

来源：

APPLIED PHYSICS LETTERS | 1994年 / 64卷 / 02期

关键词：

D O I：

10.1063/1.111508

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The visible luminescence of porous Si is known to contain at least two spectrally distinct emission bands with widely different response times. The orange-red luminescence component (1.5-1.9 eV) decays in times being of the order of 10 mu s at room temperature. The blue-green band (2.3-2.6 eV) is very much faster with response time in the 10-ns range. It is shown that with increasing degree of oxidation the fraction of the fast luminescence intensity rises from similar to 1% of the total in the as-prepared porous Si to become the dominant spectral component in strongly oxidized material. For the rapid-thermal-oxidized material excited with 337-nm radiation, the intensity of the fast luminescence is comparable to that in the as-prepared state.

引用

页码：214 / 216

页数：3

共 15 条

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