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A large laser induced increase of light absorption has been observed in free-standing porous silicon films, in the wavelength range 500–700 nm. Thermal origin of the observed modulation is suggested by two hitherto unreported observations: the spectral dependence and the comparison between the time decay of modulation with photoluminescence. A simple thermal model, taking into account the porosity of the porous silicon film, provides a good fit over the probed spectrum. © 2000 American Institute of Physics.
Published in:
Journal of Applied Physics
(Volume:87
,
Issue:
12
)
Date of Publication: Jun 2000
- Page(s):
- 8291 - 8294
- ISSN :
- 0021-8979
- Digital Object Identifier :
- 10.1063/1.373540
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 18 June 2009
- Issue Date :
- Jun 2000
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