Perovskite light-emitting/detecting bifunctional fibres for wearable LiFi communication

Qingsong Shan; Changting Wei; Yan Jiang; Jizhong Song; Yousheng Zou; Leimeng Xu; Tao Fang; Tiantian Wang; Yuhui Dong; Jiaxin Liu; Boning Han; Fengjuan Zhang; Jiawei Chen; Yongjin Wang; Haibo Zeng

doi:10.1038/s41377-020-00402-8

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Perovskite light-emitting/detecting bifunctional fibres for wearable LiFi communication

Original Articles

- Perovskite light-emitting/detecting bifunctional fibres for wearable LiFi communication
- Light: Science & Applications Vol. 9, Issue 5, Pages: 1578-1586(2020)
- Affiliations：
  
  1.MIIT Key Laboratory of Advanced Display Materials and Devices, Institute of Optoelectronics & Nanomaterials, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
  2.Peter Grünberg Research Center, Laboratory of Broadband Wireless Communication and Sensor Network Technology, Ministry of Education, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
- Author bio：
  
  Jizhong Song (songjizhong@njust.edu.cn)
  Yongjin Wang (wangyj@njupt.edu.cn)
  Haibo Zeng (zeng.haibo@njust.edu.cn)
- Funds：
- DOI：10.1038/s41377-020-00402-8
  CLC：
- Published：2020，
  
  Published Online：16 September 2020，
  
  Received：29 April 2020，
  
  Revised：22 August 2020，
  
  Accepted：24 August 2020
- Accepted：
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Shan, Q. S. et al. Perovskite light-emitting/detecting bifunctional fibres for wearable LiFi communication. Light: Science & Applications, 9, 1578-1586 (2020).
DOI：

Shan, Q. S. et al. Perovskite light-emitting/detecting bifunctional fibres for wearable LiFi communication. Light: Science & Applications, 9, 1578-1586 (2020). DOI： 10.1038/s41377-020-00402-8.

摘要

Abstract

Light fidelity (LiFi)

which is emerging as a compelling technology paradigm shifting the common means of high-capacity wireless communication technologies

requires wearable and full-duplex compact design because of its great significance in smart wearables as well as the 'Internet of Things'. However

the construction of the key component of wearable full-duplex LiFi

light-emitting/detecting bifunctional fibres

is still challenging because of the conflicting process between carrier separation and recombination

as well as the highly dynamic film-forming process. Here

we demonstrate light-emitting/detecting bifunctional fibres enabled by perovskite QDs with hybrid components. The hybrid perovskite inks endow fibres with super-smooth QD films. This

combined with the small exciton binding energy and high carrier mobility of perovskite QDs

enables successful integration of electroluminescence and photodetection into monofilaments. The bifunctional fibres possess the narrowest electroluminescence full width at half maximum of ~19 nm and

more importantly

the capability for simultaneously transmitting and receiving information. The successful fabrication of narrow emission full-duplex LiFi fibres paves the way for the fabrication and integration of low crosstalk interoperable smart wearables.

关键词

Keywords

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