Broadband perovskite quantum dot spectrometer beyond human visual resolution

Xiaoxiu Zhu; Liheng Bian; Hao Fu; Lingxue Wang; Bingsuo Zou; Qionghai Dai; Jun Zhang; Haizheng Zhong

doi:10.1038/s41377-020-0301-4

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Broadband perovskite quantum dot spectrometer beyond human visual resolution

Original Articles

- Broadband perovskite quantum dot spectrometer beyond human visual resolution
- Light: Science & Applications Vol. 9, Issue 3, Pages: 730-738(2020)
- Affiliations：
  
  1.MIIT Key Laboratory for Low-dimensional Quantum Structure and Devices, Beijing Institute of Technology, 100081 Beijing, China
  2.School of Materials Science & Engineering, Beijing Institute of Technology, 100081 Beijing, China
  3.School of Information and Electronics & Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, 100081 Beijing, China
  4.Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Optics and Photonics, Beijing Institute of Technology, 100081 Beijing, China
  5.Department of Automation & School of Information Science and Technology, Tsinghua University, 100086 Beijing, China
  6.Beijing National Research Center for Information Science and Technology, 100086 Beijing, China
- Author bio：
  
  Liheng Bian (bian@bit.edu.cn)
  Haizheng Zhong (hzzhong@bit.edu.cn)
- Funds：
- DOI：10.1038/s41377-020-0301-4
  CLC：
- Published：2020，
  
  Published Online：29 April 2020，
  
  Received：26 February 2020，
  
  Revised：15 March 2020，
  
  Accepted：23 March 2020
- Accepted：
Scan QR Code
Zhu, X. X. et al. Broadband perovskite quantum dot spectrometer beyond human visual resolution. Light: Science & Applications, 9, 730-738 (2020).
DOI：

Zhu, X. X. et al. Broadband perovskite quantum dot spectrometer beyond human visual resolution. Light: Science & Applications, 9, 730-738 (2020). DOI： 10.1038/s41377-020-0301-4.

摘要

Abstract

The quantum dot spectrometer

fabricated by integrating different quantum dots with an image sensor to reconstruct the target spectrum from spectral-coupled measurements

is an emerging and promising hyperspectrometry technology with high resolution and a compact size. The spectral resolution and spectral range of quantum dot spectrometers have been limited by the spectral variety of the available quantum dots and the robustness of algorithmic reconstruction. Moreover

the spectrometer integration of quantum dots also suffers from inherent photoluminescence emission and poor batch-to-batch repeatability. In this work

we developed nonemissive in situ fabricated MA

and Cs

SnX

(MA = CH

;

= Cl

I) perovskite-quantum-dot-embedded films (PQDFs) with precisely tunable transmittance spectra for quantum dot spectrometer applications. The resulting PQDFs contain in situ fabricated perovskite nanocrystals with homogenous dispersion in a polymeric matrix

giving them advantageous features such as high transmittance efficiency and good batch-to-batch repeatability. By integrating a filter array of 361 kinds of PQDFs with a silicon-based photodetector array

we successfully demonstrated the construction of a perovskite quantum dot spectrometer combined with a compressive-sensing-based total-variation optimization algorithm. A spectral resolution of ~1.6 nm was achieved in the

broadband of 250–1000 nm. The performance of the perovskite quantum dot spectrometer is well beyond that of human eyes in terms of both the spectral range and spectral resolution. This advancement will not only pave the way for using quantum dot spectrometers for practical applications but also significantly impact the development of artificial intelligence products

clinical treatment equipment

scientific instruments

etc.

关键词

Keywords

references

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