Modified spontaneous emission of silicon nanocrystals embedded in artificial opals
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]
|Collections||ANU Research Publications|
|Source:||Journal of Physics D: Applied Physics|
|01_Janda_Modified_spontaneous_emission_2007.pdf||1.2 MB||Adobe PDF||Request a copy|
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