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Modified spontaneous emission of silicon nanocrystals embedded in artificial opals

Janda, Petr; Valenta, Jan; Rehspringer, Jean-Luc; Mafouana, Rodrigue R; Linnros, Jan; Elliman, Robert


Si nanocrystals (NCs) were embedded in synthetic silica opals by means of Si-ion implantation or opal impregnation with porous-Si suspensions. In both types of sample photoluminescence (PL) is strongly Bragg-reflection attenuated (up to 75%) at the frequency of the opal stop-band in a direction perpendicular to the (1 1 1) face of the perfect hcp opal structure. Time-resolved PL shows a rich distribution of decay rates, which contains both shorter and longer decay components compared with the...[Show more]

CollectionsANU Research Publications
Date published: 2007
Type: Journal article
Source: Journal of Physics D: Applied Physics
DOI: 10.1088/0022-3727/40/19/008


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