Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Laser-Induced Recrystallization of Perovskite Materials for High-Performance Flexible Light-Emitting Diode

고성능 유연 발광 다이오드 소자 구현을 위한 레이저 기반 페로브스카이트 소재의 재결정화

  • Jae Chan Heo (Department of Mechanical Design Engineering, Kumoh National Institute of Technology) ;
  • Ji Eun Kim (Division of Advanced Materials Engineering, Jeonbuk National University) ;
  • Dong Gyu Lee (Department of Mechanical Design Engineering, Kumoh National Institute of Technology) ;
  • Yun Sik Hwang (Department of Mechanical Design Engineering, Kumoh National Institute of Technology) ;
  • Yu Mi Woo (Department of Mechanical Design Engineering, Kumoh National Institute of Technology) ;
  • Han Eol Lee (Division of Advanced Materials Engineering, Jeonbuk National University) ;
  • Jung Hwan Park (Department of Mechanical Design Engineering, Kumoh National Institute of Technology)
  • 허재찬 (금오공과대학교 기계설계공학과) ;
  • 김지은 (전북대학교 신소재공학부) ;
  • 이동규 (금오공과대학교 기계설계공학과) ;
  • 황윤식 (금오공과대학교 기계설계공학과) ;
  • 우유미 (금오공과대학교 기계설계공학과) ;
  • 이한얼 (전북대학교 신소재공학부) ;
  • 박정환 (금오공과대학교 기계설계공학과)
  • Received : 2023.02.26
  • Accepted : 2023.03.13
  • Published : 2023.05.01
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Abstract

Perovskite materials are promising candidates for next-generation optoelectronic devices owing to their outstanding external quantum efficiency, high color purity, and ability to tune the light emission wavelength. However, conventional thermal annealing processes caused the degradation of perovskite, resulting in poor optoelectronic properties and a short lifetime. Herein, we propose a laser-induced recrystallization of perovskite thin film to enhance its light-emitting properties. Laser-induced recrystallization process was performed using rapid and instantaneous laser heating, which successfully induced grain growth of the perovskite material. The laser processing conditions were thoroughly optimized based on theoretical calculations and various material analyses such as x-ray diffraction, scanning electron microscope, and photoluminescence spectroscopy.

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Acknowledgement

이 연구는 금오공과대학교 학술연구비로 지원되었음(202003650001).

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