Journal of Applied Reliability (한국신뢰성학회지:신뢰성응용연구)

The Korean Reliability Society (한국신뢰성학회)
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Evaluation of Failure Mechanism of Flexible CIGS Solar Cell Exposed to High Temperature and Humid Atmosphere

플렉서블 CIGS 태양전지의 고온고습 환경 고장 기구 분석

  • Kim, Hyeok-Soo (Department of Materials Science & Engineering, Seoul national University of Science & Technology) ;
  • Byeon, Jai-Won (Department of Materials Science & Engineering, Seoul national University of Science & Technology)
  • 김혁수 (서울과학기술대학교 신소재공학과) ;
  • 변재원 (서울과학기술대학교 신소재공학과)
  • Received : 2016.02.15
  • Accepted : 2016.03.04
  • Published : 2016.03.25
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Abstract

Purpose: The purpose of this study was to evaluate electrical and structural degradation of flexible CIGS sollar cell exposed to high temperature and humid atmosphere. Method: Accelerated degradation was performed for various time under $85^{\circ}C/85%RH$ and then electrical and structural properties were analyzed by 4-point probe method, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and X-ray diffraction (XRD). Results: Sheet resistance of the top ITO layer increased with exposure time to the high temperature and humid atmosphere. Blunting of the protrusion morphology of ITO layer was observed for the degraded specimen, while no phase change was detected by XRD. Oxygen was detected at the edge area after 300 hours of exposure. Conclusion: Increase in electrical resistance of the degraded CIGS solar cell under high temperature and humid environment was attribute to the oxygen or water absorption.

Keywords

References

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