Document Detail


Trap-state-assisted white light emission from a CdSe nanocrystal integrated hybrid light-emitting diode.
MedLine Citation:
PMID:  21403688     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
This Letter reports on the fabrication of hybrid white-light-emitting diodes made of semiconductor nanocrystals (NCs) integrated on InGaN/GaN LEDs. Using core type and core/shell type CdSe NCs, the white light properties are systematically engineered for white light generation with high color rendering index (CRI). Unlike CdSe/ZnS core/shell NCs, which exhibited a unique narrowband edge emission, core type CdSe NCs offered extended broad emission toward orange/red wavelengths associated with deep trap states. Consequently, the light-emitting properties of the devices showed strong dependence on the type of NCs used, and devices with CdSe NCs offered admirable characteristics, such as Commission Internationale d'Eclairage coordinates of (0.356, 0.330) and a CRI as high as 87.4.
Authors:
S Chandramohan; Beo Deul Ryu; Hyun Kyu Kim; Chang-Hee Hong; Eun-Kyung Suh
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Optics letters     Volume:  36     ISSN:  1539-4794     ISO Abbreviation:  Opt Lett     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-03-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7708433     Medline TA:  Opt Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  802-4     Citation Subset:  IM    
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