Effect of the granule size in porous silicon on the photosensitization efficiency of molecular oxygen on the surface of silicon nanocrystals

Journal Article · Sun Mar 15 00:00:00 EDT 2009 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S106377610903011X· OSTI ID:21246928

Demin, V A; Gongal'skii, M B; Kashkarov, P K ^[1]; Radtsig, V A ^[2]

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1. Moscow State University (Russian Federation)
2. Russian Academy of Sciences, Semenov Institute of Chemical Physics (Russian Federation)

Photoluminescence is used to study the effect of the granule size in porous silicon on the generation efficiency of the excited state of molecular oxygen ({sup 1}O{sub 2}) on the surface of silicon nanocrystals. The generation efficiency is found to increase as the granule size becomes smaller than 100 nm, which can be explained by a change in the conditions of exciton diffusion along a network of silicon nanocrystals.

• OSTI ID: 21246928
• Journal Information: Journal of Experimental and Theoretical Physics, Journal Name: Journal of Experimental and Theoretical Physics Journal Issue: 3 Vol. 108; ISSN JTPHES; ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
EFFICIENCY
EXCITED STATES
EXCITONS
NANOSTRUCTURES
OXYGEN
PHOTOLUMINESCENCE
POROUS MATERIALS
SILICON