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dc.contributor.authorZhang, Qianpeng
dc.contributor.authorTavakoli, Mohammad Mahdi
dc.contributor.authorGu, Leilei
dc.contributor.authorZhang, Daquan
dc.contributor.authorTang, Lei
dc.contributor.authorGao, Yuan
dc.contributor.authorGuo, Ji
dc.contributor.authorLin, Yuanjing
dc.contributor.authorLeung, Siu
dc.contributor.authorPoddar, Swapnadeep
dc.contributor.authorFu, Yu
dc.contributor.authorFan, Zhiyong
dc.date.accessioned2019-03-11T07:15:13Z
dc.date.available2019-03-11T07:15:13Z
dc.date.issued2019-02-13
dc.identifier.citationZhang Q, Tavakoli MM, Gu L, Zhang D, Tang L, et al. (2019) Efficient metal halide perovskite light-emitting diodes with significantly improved light extraction on nanophotonic substrates. Nature Communications 10. Available: http://dx.doi.org/10.1038/s41467-019-08561-y.
dc.identifier.issn2041-1723
dc.identifier.doi10.1038/s41467-019-08561-y
dc.identifier.urihttp://hdl.handle.net/10754/631531
dc.description.abstractMetal halide perovskite has emerged as a promising material for light-emitting diodes. In the past, the performance of devices has been improved mainly by optimizing the active and charge injection layers. However, the large refractive index difference among different materials limits the overall light extraction. Herein, we fabricate efficient methylammonium lead bromide light-emitting diodes on nanophotonic substrates with an optimal device external quantum efficiency of 17.5% which is around twice of the record for the planar device based on this material system. Furthermore, optical modelling shows that a high light extraction efficiency of 73.6% can be achieved as a result of a two-step light extraction process involving nanodome light couplers and nanowire optical antennas on the nanophotonic substrate. These results suggest that utilization of nanophotonic structures can be an effective approach to achieve high performance perovskite light-emitting diodes.
dc.description.sponsorshipQ. Zhang thanks Kwong-Hoi Tsui, Jiaqi Chen, Yuefei Cai, and Lian Duan from Department of ECE, HKUST for their technical support and fruitful discussions. Q. Zhang thanks Ms Yan Zhang and Mr Alex H. K. Wong from MCPF, HKUST for their help and discussion during SEM taking. This work was supported by National Natural Science Foundation of China (Project No. 51672231), Shen Zhen Science and Technology Innovation Commission (Project No. JCYJ20170818114107730) and Hong Kong Research Grant Council (General Research Fund Project No. 16237816, 16309018). The authors also acknowledge the support from the State Key Laboratory on Advanced Displays and Optoelectronics and the Center for 1D/2D Quantum Materials at HKUST.
dc.publisherSpringer Nature
dc.relation.urlhttp://link.springer.com/article/10.1038/s41467-019-08561-y
dc.rightsThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.titleEfficient metal halide perovskite light-emitting diodes with significantly improved light extraction on nanophotonic substrates
dc.typeArticle
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.identifier.journalNature Communications
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionHKUST-Shenzhen Research Institute, No. 9 Yuexing first RD, South Area, Hi-tech Park, Nanshan, Shenzhen, 518057, China
dc.contributor.institutionDepartment of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China.
kaust.personLeung, Siu
refterms.dateFOA2019-03-11T08:44:52Z
dc.date.published-online2019-02-13
dc.date.published-print2019-12


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This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
Except where otherwise noted, this item's license is described as This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.