Enhanced spontaneous emission in semiconductor nanocrystal solids using resonant energy transfer for integrated devices
Date
2008-11
Authors
Advisor
Instructor
Source Title
Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS 2008
Print ISSN
Electronic ISSN
Publisher
IEEE
Volume
Issue
Pages
587 - 588
Language
English
Type
Conference Paper
Journal Title
Journal ISSN
Volume Title
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.
Course
Other identifiers
Book Title
Keywords
Spontaneous emission, Nanocrystals, Solids, Resonance, Energy exchange, Optical devices, Stimulated emission, Quantum dots, Recycling, Excitons