Efficient metal halide perovskite light-emitting diodes with significantly improved light extraction on nanophotonic substrates

Qianpeng Zhang; Mohammad Mahdi Tavakoli; Leilei Gu; Daquan Zhang; Lei Tang; Yuan Gao; Ji Guo; Yuanjing Lin; Siu Fung Leung; Swapnadeep Poddar; Yu Fu; Zhiyong Fan

doi:10.1038/s41467-019-08561-y

Efficient metal halide perovskite light-emitting diodes with significantly improved light extraction on nanophotonic substrates

Qianpeng Zhang, Mohammad Mahdi Tavakoli, Leilei Gu, Daquan Zhang, Lei Tang, Yuan Gao, Ji Guo, Yuanjing Lin, Siu Fung Leung, Swapnadeep Poddar, Yu Fu, Zhiyong Fan^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

204 Scopus citations

Abstract

Metal 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.

Original language	English (US)
Article number	727
Journal	Nature Communications
Volume	10
Issue number	1
DOIs	https://doi.org/10.1038/s41467-019-08561-y
State	Published - Dec 1 2019
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Biochemistry, Genetics and Molecular Biology
General Physics and Astronomy

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title = "Efficient metal halide perovskite light-emitting diodes with significantly improved light extraction on nanophotonic substrates",

abstract = "Metal 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.",

author = "Qianpeng Zhang and Tavakoli, {Mohammad Mahdi} and Leilei Gu and Daquan Zhang and Lei Tang and Yuan Gao and Ji Guo and Yuanjing Lin and Leung, {Siu Fung} and Swapnadeep Poddar and Yu Fu and Zhiyong Fan",

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doi = "10.1038/s41467-019-08561-y",

language = "English (US)",

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T1 - Efficient metal halide perovskite light-emitting diodes with significantly improved light extraction on nanophotonic substrates

AU - Zhang, Qianpeng

AU - Tavakoli, Mohammad Mahdi

AU - Gu, Leilei

AU - Zhang, Daquan

AU - Tang, Lei

AU - Gao, Yuan

AU - Guo, Ji

AU - Lin, Yuanjing

AU - Leung, Siu Fung

AU - Poddar, Swapnadeep

AU - Fu, Yu

AU - Fan, Zhiyong

PY - 2019/12/1

Y1 - 2019/12/1

N2 - Metal 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.

AB - Metal 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.

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JF - Nature Communications

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Efficient metal halide perovskite light-emitting diodes with significantly improved light extraction on nanophotonic substrates

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ASJC Scopus subject areas

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