Förster resonance energy transfer enhanced color-conversion using colloidal semiconductor quantum dots for solid state lighting
Date
2009-10-15
Authors
Advisor
Instructor
Source Title
Applied Physics Letters
Print ISSN
0003-6951
Electronic ISSN
Publisher
American Institute of Physics
Volume
95
Issue
15
Pages
151111-1 - 151111-3
Language
English
Type
Article
Journal Title
Journal ISSN
Volume Title
Abstract
In this paper, we present Förster resonance energy transfer (FRET)-enhanced color-conversion using colloidal semiconductor quantum dot nanocrystals (NCs) to make reddish-orange light-emitting diodes for use in ultraefficient solid state lighting. To achieve FRET enhancement at 614 nm, we use an energy gradient hybrid structure made of cyan- and orange-emitting CdSe/ZnS NCs (λPL =492 and 588 nm in solution, respectively). This enables recycling of trapped excitons using FRET and achieves a relative quantum efficiency enhancement of 15.1% in reddish-orange full color-conversion for the integrated hybrid cyan-orange NC layer with respect to the case of full color-conversion using only orange NCs without FRET.
Course
Other identifiers
Book Title
Keywords
CdSe/ZnS, Colloidal semiconductors, Energy gradients, Full color, Hybrid structure, Quantum dot, Resonance energy transfer, Solid state lighting, Trapped exciton, Color, Energy transfer, Light emitting diodes, Lighting, Optical waveguides, Resonance, Semiconductor diodes, Semiconductor quantum dots