In situ photoluminescence spectral study of porous Si in HF aqueous solution
- 26 September 1994
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 65 (13) , 1653-1655
- https://doi.org/10.1063/1.112945
Abstract
Time‐dependent change in the visible luminescence of porous Si immersed in HF aqueous solution was measured in a short acquisition time (5 s) with a charge coupled device detector. Under Ar+ laser light (514.5 nm) irradiation, the photoluminescence band of the porous Si shifted to shorter wavelength accompanying a reduction of the peak intensity. The result suggests that the size of the Si nanostructure is closely related to the gap energy of the porous Si.Keywords
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