Carrier dynamic identification enables wavelength and intensity sensitivity in perovskite photodetectors

Liangliang Min; Yicheng Zhou; Haoxuan Sun; Linqi Guo; Meng Wang; Fengren Cao; Wei Tian; Liang Li

doi:10.1038/s41377-024-01636-6

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Carrier dynamic identification enables wavelength and intensity sensitivity in perovskite photodetectors

Original Articles

- Carrier dynamic identification enables wavelength and intensity sensitivity in perovskite photodetectors
- Carrier dynamic identification enables wavelength and intensity sensitivity in perovskite photodetectors
- LSA 2024年13卷第11期页码：2824-2834
- Affiliations：
  
  1.School of Physical Science and Technology, Jiangsu Key Laboratory of Frontier Material Physics and Devices, Center for Energy Conversion Materials & Physics (CECMP), Soochow University, Suzhou, China
  2.College of Physical Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Yangzhou, China
- Author bio：
  
  Haoxuan Sun (hxsun@suda.edu.cn)
  Wei Tian (wtian@suda.edu.cn)
  Liang Li (lli@suda.edu.cn)
- Funds：
- DOI：10.1038/s41377-024-01636-6
  中图分类号：
- 收稿日期：2024-06-14，
  
  修回日期：2024-09-10，
  
  录用日期：2024-09-11，
  
  网络出版日期：2024-09-29，
  
  纸质出版日期：2024-11-30
- Accepted：
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Carrier dynamic identification enables wavelength and intensity sensitivity in perovskite photodetectors[J]. LSA, 2024,13(11):2824-2834.

Min, L. L. et al. Carrier dynamic identification enables wavelength and intensity sensitivity in perovskite photodetectors. Light: Science & Applications, 13, 2824-2834 (2024).
Carrier dynamic identification enables wavelength and intensity sensitivity in perovskite photodetectors[J]. LSA, 2024,13(11):2824-2834. DOI： 10.1038/s41377-024-01636-6.

Min, L. L. et al. Carrier dynamic identification enables wavelength and intensity sensitivity in perovskite photodetectors. Light: Science & Applications, 13, 2824-2834 (2024). DOI： 10.1038/s41377-024-01636-6.

摘要

Abstract

Deciphering the composite information within a light field through a single photodetector

without optical and mechanical structures

is challenging. The difficulty lies in extracting multi-dimensional optical information from a single dimension of photocurrent. Emerging photodetectors based on information reconstruction have potential

yet they only extract information contained in the photoresponse current amplitude (responsivity matrix)

neglecting the hidden information in response edges driven by carrier dynamics. Herein

by adjusting the thickness of the absorption layer and the interface electric field strength in the perovskite photodiode

we extend the transport and relaxation time of carriers excited by photons of different wavelengths

maximizing the spectrum richness of the edge waveform in the light-dark transition process. For the first time

without the need for extra optical and electrical components

the reconstruction of two-dimensional information of light intensity and wavelength has been achieved. With the integration of machine learning algorithms into waveform data analysis

a wide operation spectrum range of 350–750 nm is available with a 100% accuracy rate. The restoration error has been lowered to less than 0.1% for light intensity. This work offers valuable insights for advancing perovskite applications in areas such as wavelength identification and spectrum imaging.

关键词

Keywords

references

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