RAMAN AND HIGH-PRESSURE PHOTOLUMINESCENCE STUDIES ON POROUS SILICON

被引:54
作者
SOOD, AK [1 ]
JAYARAM, K [1 ]
MUTHU, DVS [1 ]
机构
[1] JAWAHARLAL NEHRU CTR ADV SCI RES, BANGALORE 560012, INDIA
关键词
D O I
10.1063/1.352066
中图分类号
O59 [应用物理学];
学科分类号
摘要
We show that there is no correlation between the blue shift of the visible photoluminescence band and red shift of the Raman phonon line in porous silicon, in contrast to the recently reported results. We also report a drastic red shift of the photoluminescence peak position with pressure up to 6 GPa and show that this is much larger than that of the crystalline silicon. These observations cast doubt on the suggested mechanism of quantum size effects in porous silicon.
引用
收藏
页码:4963 / 4965
页数:3
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