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23 April 2024

» arxiv » cond-mat/0509565

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Frequency-dependent spontaneous emission rate from CdSe and CdTe nanocrystals: influence of dark states
A. F. van Driel ; G. Allan ; C. Delerue ; P. Lodahl ; W. L. Vos ; D. Vanmaekelbergh ;
Date:	22 Sep 2005
Abstract:	We studied the rate of spontaneous emission from colloidal CdSe and CdTe nanocrystals at room temperature. The decay rate, obtained from luminescence decay curves, increases with the emission frequency in a supra-linear way. This dependence is explained by the thermal occupation of dark exciton states at room temperature, giving rise to a strong attenuation of the rate of emission. The supra-linear dependence is in agreement with the results of tight-binding calculations.
Source:	arXiv, cond-mat/0509565
Other source:	[GID 964521] pmid16384329
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