Cascaded exciton emission of an individual strain-induced quantum dot
arXiv:0908.1665 · doi:10.1063/1.3216807
Abstract
Single strain-induced quantum dots are isolated for optical experiments by selective removal of the inducing InP islands from the sample surface. Unpolarized emission of single, bi- and triexciton transitions are identified by power-dependent photoluminescence spectroscopy. Employing time-resolved experiments performed at different excitation powers we find a pronounced shift of the rise and decay times of these different transitions as expected from cascaded emission. Good agreement is found for a rate equation model for a three step cascade.
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Cited by in corpus (5)
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- Direct observation of dynamic surface acoustic wave controlled carrier injection into single quantum posts using phase-resolved optical spectroscopy
- Surface acoustic wave mediated carrier injection into individual quantum post nano emitters