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Nanocomposites consisting of oxidized porous Si (OPSi) impregnated with rhodamine 110 (Rh110) molecules are characterized in terms of luminescence properties. The photoluminescence and its polarization memory strongly indicates a trace of energy transfer from the fast blue luminescence band of OPSi to the green one of Rh110. Time-resolved experiments showed that energy transfer to Rh110 also takes place from the long-lived blue phosphorescence of OPSi. The transfer channel from nonradiative states of OPSi to Rh110 was also found. The ability of OPSi to harvest and transfer absorbed photon energy to a guest is promising for applications in optoelectronics and biology.
Published in:
Applied Physics Letters
(Volume:97
,
Issue:
17
)
Date of Publication: Oct 2010
- Page(s):
- 171107 - 171107-3
- ISSN :
- 0003-6951
- Digital Object Identifier :
- 10.1063/1.3511740
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 04 November 2010
- Issue Date :
- Oct 2010
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