Modulating the optical and electrical properties of MAPbBr<sub>3</sub> single crystals via voltage regulation engineering and application in memristors

Jun Xing; Chen Zhao; Yuting Zou; Wenchi Kong; Zhi Yu; Yuwei Shan; Qingfeng Dong; Ding Zhou; Weili Yu; Chunlei Guo

doi:10.1038/s41377-020-00349-w

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Modulating the optical and electrical properties of MAPbBr₃ single crystals via voltage regulation engineering and application in memristors

Original Articles

- Modulating the optical and electrical properties of MAPbBr₃ single crystals via voltage regulation engineering and application in memristors
- Modulating the optical and electrical properties of MAPbBr₃ single crystals via voltage regulation engineering and application in memristors
- LSA 2020年9卷第4期页码：1092-1102
- Affiliations：
  
  1.The Guo Photonics Laboratory, State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 130033 Changchun, China
  2.University of Chinese Academy of Sciences, 100049 Beijing, China
  3.State Key Laboratory of Supramolecular Structure and Materials, Jilin University, 130012 Changchun, China
  4.State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 130033 Changchun, China
  5.The Institute of Optics, University of Rochester, Rochester, NY 14627, USA
- Author bio：
  
  Qingfeng Dong (qfdong@jlu.edu.cn)
  Weili Yu (weili.yu@ciomp.ac.cn)
  Chunlei Guo (guo@optics.rochester.edu)
- Funds：
- DOI：10.1038/s41377-020-00349-w
  中图分类号：
- 纸质出版日期：2020，
  
  网络出版日期：2020-06-30，
  
  收稿日期：2020-02-13，
  
  修回日期：2020-06-09，
  
  录用日期：2020-06-15
- Accepted：
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Modulating the optical and electrical properties of MAPbBr₃ single crystals via voltage regulation engineering and application in memristors[J]. LSA, 2020,9(4):1092-1102.

Xing, J. et al. Modulating the optical and electrical properties of MAPbBr₃ single crystals via voltage regulation engineering and application in memristors. Light: Science & Applications, 9, 1092-1102 (2020).
Modulating the optical and electrical properties of MAPbBr₃ single crystals via voltage regulation engineering and application in memristors[J]. LSA, 2020,9(4):1092-1102. DOI： 10.1038/s41377-020-00349-w.

Xing, J. et al. Modulating the optical and electrical properties of MAPbBr₃ single crystals via voltage regulation engineering and application in memristors. Light: Science & Applications, 9, 1092-1102 (2020). DOI： 10.1038/s41377-020-00349-w.

摘要

Abstract

Defect density is one of the most significant characteristics of perovskite single crystals (PSCs) that determines their optical and electrical properties

but few strategies are available to tune this property. Here

we demonstrate that voltage regulation is an efficient method to tune defect density

as well as the optical and electrical properties of PSCs. A three-step carrier transport model of MAPbBr

PSCs is proposed to explore the defect regulation mechanism and carrier transport dynamics via an applied bias. Dynamic and steady-state photoluminescence measurements subsequently show that the surface defect density

average carrier lifetime

and photoluminescence intensity can be efficiently tuned by the applied bias. In particular

when the regulation voltage is 20 V (electrical poling intensity is 0.167 V μm

−1

)

the surface defect density of MAPbBr

PSCs is reduced by 24.27%

the carrier lifetime is prolonged by 32.04%

and the PL intensity is increased by 112.96%. Furthermore

a voltage-

regulated MAPbBr

PSC memristor device shows an adjustable multiresistance

weak ion migration effect and greatly enhanced device stability. Voltage regulation is a promising engineering technique for developing advanced perovskite optoelectronic devices.

关键词

Keywords

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Modulating the optical and electrical properties of MAPbBr3 single crystals via voltage regulation engineering and application in memristors

Modulating the optical and electrical properties of MAPbBr3 single crystals via voltage regulation engineering and application in memristors

DOI：10.1038/s41377-020-00349-w

摘要

Abstract

关键词

Keywords

references

Modulating the optical and electrical properties of MAPbBr₃ single crystals via voltage regulation engineering and application in memristors

Modulating the optical and electrical properties of MAPbBr₃ single crystals via voltage regulation engineering and application in memristors