Critical role of CdSe nanoplatelets in color-converting CdSe/ZnS nanocrystals for InGaN/GaN light-emitting diodes
Date
2016
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Source Title
Optics Letters
Print ISSN
0146-9592
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Publisher
OSA - The Optical Society
Volume
41
Issue
12
Pages
2883 - 2886
Language
English
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Journal Title
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Abstract
Here we report CdSe nanoplatelets that are incorporated into color-converting CdSe/ZnS nanocrystals for InGaN/GaN light-emitting diodes. The critical role of CdSe nanoplatelets as an exciton donor for the color conversion was experimentally investigated. The power conversion efficiency of the hybrid light-emitting diode was found to increase by 23% with the incorporation of the CdSe nanoplatelets. The performance enhancement is ascribed to efficient exciton transfer from the donor CdSe nanoplatelet quantum wells to the acceptor CdSe/ZnS nanocrystal quantum dots through F�rster-type nonradiative resonance energy transfer.
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Keywords
Color , Diodes , Energy transfer , Excitons , Nanocrystals , Semiconductor quantum dots , CdSe/ZnS nanocrystals , Color conversions , Exciton transfer , Hybrid light-emitting diodes , Nano-platelets , Performance enhancements , Power conversion efficiencies , Resonance energy transfer , Light emitting diodes