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Highly Efficient Visible Colloidal Lead-Halide Perovskite Nanocrystal Light-Emitting Diodes
Yan, Fei1; Xing, Jun2,4; Xing, Guichuan5; Quan, Lina4; Tan, Swee Tiam1; Zhao, Jiaxin2; Su, Rui2; Zhang, Lulu2; Chen, Shi2; Zhao, Yawen6; Huan, Alfred2; Sargent, Edward H.4; Xiong, Qihua2,3,7; Demir, Hilmi Volkan1,2,8
Source PublicationNANO LETTERS

Lead-halide perovskites have been attracting attention for potential use in solid-state lighting. Following the footsteps of solar cells, the field of perovskite light-emitting diodes (PeLEDs) has been growing rapidly. Their application prospects in lighting, however, remain still uncertain due to a variety of shortcomings in device performance including their limited levels of luminous efficiency achievable thus far. Here we show high-efficiency PeLEDs based on colloidal perovskite nanocrystals (PeNCs) synthesized at room temperature possessing dominant first-order excitonic radiation (enabling a photoluminescence quantum yield of 71% in solid film), unlike in the case of bulk perovskites with slow electron-hole bimolecular radiative recombination (a second-order process). In these PeLEDs, by reaching charge balance in the recombination zone, we find that the Auger nonradiative recombination, with its significant role in emission quenching, is effectively suppressed in low driving current density range. In consequence, these devices reach a maximum external quantum efficiency of 12.9% and a power efficiency of 30.3 lm W-1 at luminance levels above 1000 cd m(-2) as required for various applications. These findings suggest that, with feasible levels of device performance, the PeNCs hold great promise for their use in LED lighting and displays.

KeywordColloidal Nanocrystal Lead-halide Perovskite Light-emitting Diodes
URLView the original
Indexed BySCIE
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000432093200058
The Source to ArticleWOS
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Cited Times [WOS]:155   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorSargent, Edward H.; Xiong, Qihua; Demir, Hilmi Volkan
Affiliation1.LUMINOUS! Center of Excellence for Semiconductor Lighting and Displays, TPI-The Photonics Institute, School of Electrical and Electronic Engineering
2.Division of Physics and Applied Physics, School of Physical and Mathematical Sciences
3.NOVITAS, Nanoelectronics Centre of Excellence, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
4.Department of Electrical and Computer Engineering, University of Toronto, 10 King’s College Road, Toronto, Ontario M5S 3G4, Canada
5.Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR 999078, China
6.China Academy of Engineering Physics, Mianyang 621900, China
7.MajuLab, CNRS-UCA-SU-NUS-NTU International Joint Research Unit, UMI 3654, Singapore
8.Department of Electrical and Electronics Engineering, Department of Physics, UNAM−Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800, Turkey
Recommended Citation
GB/T 7714
Yan, Fei,Xing, Jun,Xing, Guichuan,et al. Highly Efficient Visible Colloidal Lead-Halide Perovskite Nanocrystal Light-Emitting Diodes[J]. NANO LETTERS,2018,18(5):3157-3164.
APA Yan, Fei,Xing, Jun,Xing, Guichuan,Quan, Lina,Tan, Swee Tiam,Zhao, Jiaxin,Su, Rui,Zhang, Lulu,Chen, Shi,Zhao, Yawen,Huan, Alfred,Sargent, Edward H.,Xiong, Qihua,&Demir, Hilmi Volkan.(2018).Highly Efficient Visible Colloidal Lead-Halide Perovskite Nanocrystal Light-Emitting Diodes.NANO LETTERS,18(5),3157-3164.
MLA Yan, Fei,et al."Highly Efficient Visible Colloidal Lead-Halide Perovskite Nanocrystal Light-Emitting Diodes".NANO LETTERS 18.5(2018):3157-3164.
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