Current Photovoltaic Research

  • 제11권3호
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  • Pages.87-95
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  • 2023
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  • 2288-3274(pISSN)
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  • 2508-125X(eISSN)
한국태양광발전학회 (Korea Photovoltaic Society)
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페로브스카이트 실내 광전변환 효율 향상을 위한 ethylenediamine 기반의 표면 결함 부동화 연구

Ethylenediamine Based Surface Defect Passivation for Enhancing Indoor Photovoltaic Efficiency of Perovskite

  • 강석범 (신소재공학과, 고려대학교) ;
  • 윤주웅 (신소재공학과, 고려대학교) ;
  • 김창용 (신소재공학과, 고려대학교) ;
  • 이상헌 (신소재공학과, 고려대학교) ;
  • 이혜민 (신소재공학과, 고려대학교) ;
  • 김동회 (신소재공학과, 고려대학교)
  • Seok Beom Kang (Department of Materials Science and Engineering, Korea University) ;
  • Joo Woong Yoon (Department of Materials Science and Engineering, Korea University) ;
  • Chang Yong Kim (Department of Materials Science and Engineering, Korea University) ;
  • Sangheon Lee (Department of Materials Science and Engineering, Korea University) ;
  • Hyemin Lee (Department of Materials Science and Engineering, Korea University) ;
  • Dong Hoe Kim (Department of Materials Science and Engineering, Korea University)
  • 투고 : 2023.06.12
  • 심사 : 2023.08.22
  • 발행 : 2023.09.30
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초록

As the demand for the Internet of Things grows, research into indoor photovoltaics for wireless power is becoming important. In particular, perovskite has attracted considerable attention due to its superior performance compared to other candidates. However, various surface defects present in perovskite are a limiting factor for high performance. In particular, deep-level surface defects caused by uncoordinated Pb2+ ions directly limit charge transport. In low light environments, this appears to be a more significant hurdle. In this study, ethylenediamine, which can provide covalent bonding to uncoordinated Pb2+ ions through nitrogen, was used as a surface treatment material for indoor photovoltaics. X-ray photoelectron spectroscopy confirmed that the uncoordinated Pb2+ ions were effectively passivated by the terminal nitrogen of ethylenediamine. As a consequence, a VOC of 0.998 V, a JSC of 0.139 mA cm-2 and a fill factor of 83.03% were achieved, resulting in an indoor photoelectric conversion efficiency of 38.02%.

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과제정보

이 연구는 2022년 국방과학연구소 미래도전국방기술연구개발사업(No.UI220006TD)의 지원을 받았음.

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