Quantum dot lasing from a waterproof and stretchable polymer film

Mohammad Mohammadimasoudi; Pieter Geiregat; Frederik Van Acker; Jeroen Beeckman; Zeger Hens; Tangi Aubert; Kristiaan Neyts

doi:10.1038/s41377-022-00960-z

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Quantum dot lasing from a waterproof and stretchable polymer film

Original Articles

- Quantum dot lasing from a waterproof and stretchable polymer film
- Light: Science & Applications Vol. 11, Issue 10, Pages: 2435-2443(2022)
- Affiliations：
  
  1.Nano-Bio-Photonics Lab, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
  2.Liquid Crystals and Photonics Group, ELIS Department, Ghent University, Technologiepark-Zwijnaarde 126, 9052 Zwijnaarde, Belgium
  3.Physics and Chemistry of Nanostructures, Department of Chemistry, Ghent University, Ghent, Belgium
  4.Center for Nano- and Biophotonics (NB-Photonics), Ghent University, Technologiepark-Zwijnaarde 126, 9052 Zwijnaarde, Belgium
- Author bio：
  
  Mohammad Mohammadimasoudi (mo.masoudi@ut.ac.ir)
- Funds：
- DOI：10.1038/s41377-022-00960-z
  CLC：
- Published：31 October 2022，
  
  Published Online：15 September 2022，
  
  Received：02 December 2021，
  
  Revised：03 August 2022，
  
  Accepted：17 August 2022
- Accepted：
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Mohammadimasoudi M. et al. Quantum dot lasing from a waterproof and stretchable polymer film. Light: Science & Applications, 11, 2435-2443 (2022).
DOI：

Mohammadimasoudi M. et al. Quantum dot lasing from a waterproof and stretchable polymer film. Light: Science & Applications, 11, 2435-2443 (2022). DOI： 10.1038/s41377-022-00960-z.

摘要

Abstract

Colloidal quantum dots (QDs) are excellent optical gain materials that combine high material gain

a strong absorption of pump light

stability under strong light exposure and a suitability for solution-based processing. The integration of QDs in laser cavities that fully exploit the potential of these emerging optical materials remains

however

a challenge. In this work

we report on a vertical cavity surface emitting laser

which consists of a thin film of QDs embedded between two layers of polymerized chiral liquid crystal. Forward directed

circularly polarized defect mode lasing under nanosecond-pulsed excitation is demonstrated within the photonic band gap of the chiral liquid crystal. Stable and long-term narrow-linewidth lasing of an exfoliated free-standing

flexible film under water is obtained at room temperature. Moreover

we show that the lasing wavelength of this flexible cavity shifts under influence of pressure

strain or temperature. As such

the combination of solution processable and stable inorganic QDs with high chiral liquid crystal reflectivity and effective polymer encapsulation leads to a flexible device with long operational lifetime

that can be immersed in different protic solvents to act as a sensor.

关键词

Keywords

references

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