Temperature dependence of exciton transfer in hybrid quantum well/nanocrystal heterostructures

Temperature dependence of exciton transfer in hybrid quantum well/nanocrystal heterostructures

The authors investigate the temperature dependence of exciton transfer from a single InGaN quantum well (QW) donor to colloidal CdS nanocrystal quantum dot acceptors and obtain an optimum transfer efficiency of 65% at 60 K . Time and spectrally resolved measurements reveal that the transfer efficien...

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Veröffentlicht in:Applied physics letters 2007-08, Vol.91 (9), p.092126-092126-3
Hauptverfasser: Rohrmoser, Stefan, Baldauf, Julia, Harley, Richard T., Lagoudakis, Pavlos G., Sapra, Sameer, Eychmüller, Alexander, Watson, Ian M.
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Sprache:eng
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Zusammenfassung:The authors investigate the temperature dependence of exciton transfer from a single InGaN quantum well (QW) donor to colloidal CdS nanocrystal quantum dot acceptors and obtain an optimum transfer efficiency of 65% at 60 K . Time and spectrally resolved measurements reveal that the transfer efficiency is dominated by the interplay between exciton localization and nonradiative recombination intrinsic to the QW.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2776865