PHOTOLUMINESCENCE FROM OH-RELATED RADIATIVE CENTERS IN SILICA, METAL-OXIDES AND OXIDIZED NANOCRYSTALLINE AND POROUS SILICON

被引：60

作者：

RUCKSCHLOSS, M ^{[1
]}

WIRSCHEM, T ^{[1
]}

TAMURA, H ^{[1
]}

RUHL, G ^{[1
]}

OSWALD, J ^{[1
]}

VEPREK, S ^{[1
]}

机构：

[1] TECH UNIV MUNICH,INST CHEM INFORMAT RECORDING,D-85747 GARCHING,GERMANY

来源：

JOURNAL OF LUMINESCENCE | 1995年 / 63卷 / 5-6期

关键词：

D O I：

10.1016/0022-2313(94)00076-O

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

It is shown that the green/blue photoluminescence from oxidized nanocrystalline and porous silicon, which has been attributed to the blue shift of the band gap in small silicon nanocrystals, is due to silanol groups; drop Si-OH. Alanol groups, = Al-OH and hydrated lead oxide, PbO2(OH) show the same photoluminescence in terms of spectral distribution and fast decay time of several nanoseconds. OH-related centers in zinc oxide display, beside a weak green/blue, also a red shifted yellow/green FL. These results together with some observations on the spark eroded light emitting silicon rule out the assumption that green/blue PL in oxidized porous and nanocrystalline silicon is due to quantum confinement in silicon nanocrystals and/or clusters.

引用

页码：279 / 287

页数：9

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