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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Enhancing Electrical and Optical Properties in Mechanoluminescent Flexible Nanocomposite Based on ZnS:Cu-PDMS by Mixing CNTs

ZnS:Cu-PDMS 기반 기계 발광 유연 나노 복합체의 CNT 혼입에 따른 전기 및 광학적 특성 향상에 대한 연구

  • Tae-Min Kim (Department of Nano & Semiconductor Engineering, Tech University of Korea) ;
  • Hyun-Woo Kim (Department of Nano & Semiconductor Engineering, Tech University of Korea) ;
  • Jong-Hyeok Yoon (Department of Nano & Semiconductor Engineering, Tech University of Korea) ;
  • Mi-Hee Kim (Department of Nano & Semiconductor Engineering, Tech University of Korea) ;
  • Da-Bin Jeon (Department of Nano & Semiconductor Engineering, Tech University of Korea) ;
  • Dae-Choul Choi (Department of IT Semiconductor Convergence Engineering, Tech University of Korea) ;
  • Sung-Nam Lee (Department of Nano & Semiconductor Engineering, Tech University of Korea)
  • 김태민 ( 한국공학대학교 나노반도체공학과) ;
  • 김현우 ( 한국공학대학교 나노반도체공학과) ;
  • 윤종혁 ( 한국공학대학교 나노반도체공학과) ;
  • 김미희 ( 한국공학대학교 나노반도체공학과) ;
  • 전다빈 ( 한국공학대학교 나노반도체공학과) ;
  • 최대철 ( 한국공학대학교 IT반도체융합공학과) ;
  • 이성남 ( 한국공학대학교 나노반도체공학과)
  • Received : 2023.08.03
  • Accepted : 2023.08.10
  • Published : 2023.09.01
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Abstract

Mechanoluminescence (ML) is a phenomenon where the application of mechanical force to ML materials generates an electric field and produces light, holding significant promise as an eco-friendly technology. However, challenges in commercializing ML technology has arisen due to its low brightness and short luminous lifetime. To address this, in this work, we enhance ML efficiency by mixing carbon nanotubes (CNTs) into a ZnS: Cu embedded in a polydimethylsiloxane composite ML device. The inclusion of CNTs boosts ML intensity by 98% compared to devices without CNTs, as the increasing CNT fraction elevates conductivity, thereby amplifying ML intensity. However, this increase in CNT fraction also leads to enhanced light absorption within the device. Consequently, we observe a trend where ML intensity rises initially but declines beyond a CNT fraction of 0.0015 wt%. Based on these findings, we anticipate that our research will make valuable contributions to the advancement of electrical powerless mechanoluminescent technology.

Keywords

Acknowledgement

본 연구는 교육과학기술부 한국연구재단에서 주관하는 중견연구 과제(NRF-2020R1A2C1009630)의 지원으로 수행된 연구 결과입니다.

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