Gain enhancement of perovskite nanosheets by a patterned waveguide: excitation and temperature dependence of gain saturation

Inhong Kim; Ga Eul Choi; Ming Mei; Min Woo Kim; Minju Kim; Young Woo Kwon; Tae-In Jeong; Seungchul Kim; Suck Won Hong; Kwangseuk Kyhm; Robert A. Taylor

doi:10.1038/s41377-023-01313-0

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Gain enhancement of perovskite nanosheets by a patterned waveguide: excitation and temperature dependence of gain saturation

Original Articles

- Gain enhancement of perovskite nanosheets by a patterned waveguide: excitation and temperature dependence of gain saturation
- Light: Science & Applications Vol. 12, Issue 12, Pages: 2688-2699(2023)
- Affiliations：
  
  1.Department of Opto & Cogno Mechatronics Engineering, RCDAMP, Pusan National University, Busan 46241, Republic of Korea
  2.Department of Nano-Fusion Technology, Pusan National University, Busan 46241, Republic of Korea
  3.Clarendon Laboratory, Department of Physics, University of Oxford, Oxford OX1 3PU, UK
- Author bio：
  
  Suck Won Hong (swhong@pusan.ac.kr)
  Kwangseuk Kyhm (kskyhm@pusan.ac.kr)
  Robert A. Taylor (robert.taylor@physics.ox.ac.uk)
- Funds：
- DOI：10.1038/s41377-023-01313-0
  CLC：
- Published：31 December 2023，
  
  Published Online：24 November 2023，
  
  Received：27 June 2023，
  
  Revised：20 October 2023，
  
  Accepted：22 October 2023
- Accepted：
Scan QR Code
Kim, I. et al. Gain enhancement of perovskite nanosheets by a patterned waveguide: excitation and temperature dependence of gain saturation. Light: Science & Applications, 12, 2688-2699 (2023).
DOI：

Kim, I. et al. Gain enhancement of perovskite nanosheets by a patterned waveguide: excitation and temperature dependence of gain saturation. Light: Science & Applications, 12, 2688-2699 (2023). DOI： 10.1038/s41377-023-01313-0.

摘要

Abstract

Optical gain enhancement of two-dimensional CsPbBr

nanosheets was studied when the amplified spontaneous emission is guided by a patterned structure of polyurethane-acrylate. Given the uncertainties and pitfalls in retrieving a gain coefficient from the variable stripe length method

a gain contour

$$ g(\hslash \omega

x) $$

was obtained in the plane of spectrum energy (ℏ

) and stripe length (

)

whereby an average gain was obtained

and gain saturation was analysed. Excitation and temperature dependence of the gain contour show that the waveguide enhances both gain and thermal stability due to the increased optical confinement and heat dissipation

and the gain origins were attributed to the two-dimensional excitons and the localized states.

关键词

Keywords

references

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