Influence of Shell Thickness on the Performance of Light-Emitting Devices Based on CdSe/Zn1-xCdxS Core/Shell Heterostructured Quantum Dots

Title
Influence of Shell Thickness on the Performance of Light-Emitting Devices Based on CdSe/Zn1-xCdxS Core/Shell Heterostructured Quantum Dots
Authors
Jaehoon LimByeong Guk JeongMyeongjin Park김재경Jeffrey M. PietrygaYoung-Shin ParkVictor I. KlimovChanghee LeeDoh C. Lee배완기
Keywords
charging; energy transfer; light-emitting devices; efficiency roll-off; type-I heterostructures
Issue Date
2014-12
Publisher
Advanced materials
Citation
VOL 26, NO 47, 8034-8040
Abstract
CdSe/Zn1-XCdXS core/shell heterostructured quantum dots (QDs) with varying shell thicknesses are studied as the active material in a series of electroluminescent devices. “Giant” CdSe/Zn1-XCdXS QDs (e.g., CdSe core radius of 2 nm and Zn1-XCdXS shell thickness of 6.3 nm) demonstrate a high device efficiency (peak EQE = 7.4%) and a record-high brightness (>100 000 cd m−2) of deep-red emission, along with improved device stability.
URI
http://pubs.kist.re.kr/handle/201004/49193
ISSN
09359648
Appears in Collections:
KIST Publication > Article
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