Enhanced spontaneous emission in semiconductor nanocrystal solids using resonant energy transfer for integrated devices
Author
Nizamoğlu, Sedat
Demir, Hilmi Volkan
Date
2008-11Source Title
Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS 2008
Publisher
IEEE
Pages
587 - 588
Language
English
Type
Conference PaperItem Usage Stats
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Abstract
Size-tuneable optical properties of semiconductor nanocrystal (NC) quantum dots make them attractive for a wide range of device applications. However, in these device applications, nanocrystals typically suffer from relatively low quantum efficiency (QE) when they are cast into solid form. To reduce the effect of this problem, we propose and demonstrate the enhancement of spontaneous emission in nanocrystal solids by recycling their trapped excitons through resonant nonradiative Forster energy transfer (ET) for hybrid integrated devices. For this purpose, we designed closely packed CdSe/ZnS core/shell nanocrystal emitters with an energy gradient of approximately 160 meV integrated on LEDs.
Keywords
Spontaneous emissionNanocrystals
Solids
Resonance
Energy exchange
Optical devices
Stimulated emission
Quantum dots
Recycling
Excitons