Ultrastable low-cost colloidal quantum dot microlasers of operative temperature up to 450 K

Hao Chang; Yichi Zhong; Hongxing Dong; Zhenyu Wang; Wei Xie; Anlian Pan; Long Zhang

doi:10.1038/s41377-021-00508-7

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Ultrastable low-cost colloidal quantum dot microlasers of operative temperature up to 450 K

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- Ultrastable low-cost colloidal quantum dot microlasers of operative temperature up to 450 K
- Ultrastable low-cost colloidal quantum dot microlasers of operative temperature up to 450 K
- LSA 2021年10卷第4期页码：610-619
- Affiliations：
  
  1.Key Laboratory of Materials for High-Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, 201800 Shanghai, China
  2.State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, 200241 Shanghai, China
  3.Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 310024 Hangzhou, China
  4.State Key Laboratory of High Field Laser Physics, CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, 201800 Shanghai, China
  5.Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049 Beijing, China
  6.Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering, Hunan University, 410082 Changsha, China
- Author bio：
  
  Hongxing Dong (hongxingd@siom.ac.cn)
  Wei Xie (wxie@phy.ecnu.edu.cn)
  Long Zhang (lzhang@siom.ac.cn)
- Funds：
- DOI：10.1038/s41377-021-00508-7
  中图分类号：
- 纸质出版日期：2021-04-30，
  
  网络出版日期：2021-03-18，
  
  收稿日期：2020-11-05，
  
  修回日期：2021-03-05，
  
  录用日期：2021-03-07
- Accepted：
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Ultrastable low-cost colloidal quantum dot microlasers of operative temperature up to 450 K[J]. LSA, 2021,10(4):610-619.

Chang, H. et al. Ultrastable low-cost colloidal quantum dot microlasers of operative temperature up to 450 K. Light: Science & Applications, 10, 610-619 (2021).
Ultrastable low-cost colloidal quantum dot microlasers of operative temperature up to 450 K[J]. LSA, 2021,10(4):610-619. DOI： 10.1038/s41377-021-00508-7.

Chang, H. et al. Ultrastable low-cost colloidal quantum dot microlasers of operative temperature up to 450 K. Light: Science & Applications, 10, 610-619 (2021). DOI： 10.1038/s41377-021-00508-7.

摘要

Abstract

Quantum dot microlasers

as multifunctional optical source components

are of great importance for full-color high-pixel display

miniaturized coherent lighting

and on-chip integrated photonic and electronic circuits. Since the first synthesis of colloidal quantum dots (CQD) in the 1990s

motivation to realize high-performance low-cost CQD micro-/nanolasers has been a driving force for more than three decades. However

the low packing density

inefficient coupling of CQDs with optical cavities

and the poor thermal stability of miniaturized complex systems make it challenging to achieve practical CQD micro-/nanolasers

especially to combine the continuous working ability at high temperatures and the low-cost potential with mass-produced synthesis technologies. Herein

we developed close-packed CQD-assembled microspheres and embedded them in a silica matrix through the rapid self-aggregation and solidification of CdSe/ZnS CQD. This technology addresses the core issues of photoluminescence (PL) quenching effect and low optical gain in traditional CQD laser research. High-efficiency low-threshold CQD microlasers are demonstrated together with long-playing (40 min) working stability even at 450 K under pulsed laser excitation

which is the highest operational temperature for CQD lasers. Moreover

single-mode CQD microlasers are obtained with tunable wavelengths across the entire visible spectral range. The chemosynthesis process supports the mass-produced potential of high-density integrated CQD microlasers

promoting CQD-based low-cost high-temperature microdevices.

关键词

Keywords

references

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