High-Performance Shortwave-Infrared Light-Emitting Devices Using Core-Shell (PbS-CdS) Colloidal Quantum Dots

Title
High-Performance Shortwave-Infrared Light-Emitting Devices Using Core-Shell (PbS-CdS) Colloidal Quantum Dots
Authors
황규원Geoffrey J. SupranKatherine W. SongRaoul E. CorreaJennifer SchererEric A. DaulerYasuhiro ShirasakiMoungi G. BawendiVladmir Bulovic
Keywords
cation-exchange; colloidal quantum-dots; core?shell; light-emitting devices; shortwave-infrared
Issue Date
2015-02
Publisher
Advanced materials
Citation
VOL 27, NO 8-1442
Abstract
Core-shell PbS-CdS quantum dots enhance the peak external quantum efficiency of shortwave-infrared light-emitting devices by up to 50-100-fold (compared with core-only PbS devices). This is more than double the efficiency of previous quantum-dot light-emitting devices operating at wavelengths beyond 1 mu m, and results from the passivation of the PbS cores by the CdS shells against in situ photoluminescence quenching.
URI
http://pubs.kist.re.kr/handle/201004/66486
ISSN
0935-9648
Appears in Collections:
KIST Publication > Article
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