Energy transfer dynamics between Alq3 and CdTeS/ZnS core shell nanocrystals |
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| Authors: | Shuping Zhang |
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| Affiliation: | Department of Physics, Center for Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | The photoluminescence (PL) properties of the guest-host films, using CdTeS/ZnS core shell quantum dots (QDs) as the guest and organic small-molecule material Alq3 as the host, are studied by steady-state and time-resolved PL spectroscopy. Both the relative intensity and the PL lifetime are intensively dependent on the weight ratio of Alq3 and CdTeS/ZnS QDs. The detailed analysis provides clear evidence for a Förster energy transfer from Alq3 host to QDs guest, based on the nonradiative resonant transfer mechanism. The results are relevant to the application of hybrid organic/inorganic systems to OLEDs. |
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| Keywords: | Energy transfer Photoluminescence Alq3 CdTeS/ZnS nanocrystals |
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