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Title: Double quantum dot photoluminescence mediated by incoherent reversible energy transport
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Keywords: relaxation rate
Issue Date: 2010
Citation: S. Yu. Kruchinin, A. V. Fedorov, A. V. Baranov, T. S. Perova, and K. Berwick, Double quantum dot photoluminescence mediated by incoherent reversible energy transport, Physical Review B, 81, 24, 2010, 245303
Series/Report no.: Physical Review B
Abstract: We present a theoretical study of the stationary photoluminescence of two, direct-gap, semiconductor nanocrystals, taking into account electronic excitation energy-transfer processes due to electrostatic interaction. The results obtained here allow for the incoherent reversible energy transport that occurs when the intraband relaxation rate in a quantum dot acceptor is comparable to, or less than, the energy-transfer rate. We investigate the secondary emission of two different electronic level schemes that can be realized experimentally, obtain analytical expressions for the luminescence differential cross section, and perform an analysis of its spectrum. It is shown that when excitation is not in resonance with the levels involved in energy transfer, the energy transfer is more efficient.
Description: PUBLISHED
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Appears in Collections:Electronic & Electrical Eng (Scholarly Publications)

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