Correlation between silicon hydride species and the photoluminescence intensity of porous silicon

The role of silicon hydride species in the photoluminescence intensity behavior of porous Si has been studied. The surfaces of luminescent porous Si samples were converted to a predominate SiH termination using a remote H plasma. The as-passivated samples were then immersed in various concentrations...

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Bibliographic Details
Published in:Applied physics letters 1992-04, Vol.60 (14), p.1700-1702
Main Authors: TSAI, C, LI, K.-H, WHITE, J. M, KINOSKY, D. S, QIAN, R.-Z, HSU, T.-C, IRBY, J. T, BANERJEE, S. K, TASCH, A. F, CAMPBELL, J. C, HANCE, B. K
Format: Article
Language:English
Subjects:
Chemiluminescence
Chemistry
Exact sciences and technology
General and physical chemistry
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Summary:The role of silicon hydride species in the photoluminescence intensity behavior of porous Si has been studied. The surfaces of luminescent porous Si samples were converted to a predominate SiH termination using a remote H plasma. The as-passivated samples were then immersed in various concentrations of hydrofluouric solutions to regulate the recovery of SiH2 termination on the surface. Photoluminescence measurements and transmission Fourier-transform infrared spectroscopy have shown that predominant silicon monohydride (SiH) termination results in weak photoluminescence. In contrast, it has been observed that the appearance of silicon dihydride (SiH2) coincides with an increase in the photoluminescence intensity.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.107190