Highly efficient quantum dot near-infrared light-emitting diodes
Gong, Xiwen1; Yang, Zhenyu1; Walters, Grant1; Comin, Riccardo1; Ning, Zhijun1,2; Beauregard, Eric1; Adinolfi, Valerio1; Voznyy, Oleksandr1; Sargent, Edward H.1
2016-04
发表期刊NATURE PHOTONICS
ISSN1749-4885
卷号10期号:4页码:253-+
发表状态已发表
DOI10.1038/NPHOTON.2016.11
摘要Colloidal quantum dots (CQDs) are emerging as promising materials for constructing infrared sources in view of their tunable luminescence, high quantum efficiency and compatibility with solution processing(1). However, CQD films available today suffer from a compromise between luminescence efficiency and charge transport, and this leads to unacceptably high power consumption. Here, we overcome this issue by embedding CQDs in a high-mobility hybrid perovskite matrix. The new composite enhances radiative recombination in the dots by preventing transport-assisted trapping losses; yet does so without increasing the turn-on voltage. Through compositional engineering of the mixed halide matrix, we achieve a record electroluminescence power conversion efficiency of 4.9%. This surpasses the performance of previously reported CQD near-infrared devices two-fold, indicating great potential for this hybrid QD-in-perovskite approach.
收录类别SCI ; EI
语种英语
资助项目King Abdullah University of Science and Technology (KAUST)[KUS-11-009-21]
WOS研究方向Optics ; Physics
WOS类目Optics ; Physics, Applied
WOS记录号WOS:000372978900014
出版者NATURE PUBLISHING GROUP
EI入藏号20160902030529
EI主题词Efficiency ; Energy efficiency ; Infrared devices ; Light ; Light emitting diodes ; Light sources ; Luminescence ; Nanocrystals ; Perovskite ; Semiconductor quantum dots
WOS关键词TRANSPORT ; SOLIDS
原始文献类型Article
引用统计
文献类型期刊论文
条目标识符https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/1881
专题物质科学与技术学院_PI研究组_宁志军组
通讯作者Sargent, Edward H.
作者单位1.Univ Toronto, Dept Elect & Comp Engn, 10 Kings Coll Rd, Toronto, ON M5S 3G4, Canada
2.ShanghaiTech Univ, Sch Phys Sci & Technol, Haike Rd 100, Shanghai 201210, Peoples R China
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Gong, Xiwen,Yang, Zhenyu,Walters, Grant,et al. Highly efficient quantum dot near-infrared light-emitting diodes[J]. NATURE PHOTONICS,2016,10(4):253-+.
APA Gong, Xiwen.,Yang, Zhenyu.,Walters, Grant.,Comin, Riccardo.,Ning, Zhijun.,...&Sargent, Edward H..(2016).Highly efficient quantum dot near-infrared light-emitting diodes.NATURE PHOTONICS,10(4),253-+.
MLA Gong, Xiwen,et al."Highly efficient quantum dot near-infrared light-emitting diodes".NATURE PHOTONICS 10.4(2016):253-+.
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