Current Photovoltaic Research

Korea Photovoltaic Society (한국태양광발전학회)
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Research and Development Trend of Carrier Selective Energy Contact Solar Cells

전하선택형 태양전지의 연구개발 동향

  • Cho, Eun-Chel (School of Electronic & Electrical engineering, Sungkyunkwan University) ;
  • Cho, Young Hyun (School of Electronic & Electrical engineering, Sungkyunkwan University) ;
  • Yi, Junsin (School of Electronic & Electrical engineering, Sungkyunkwan University)
  • 조은철 (전자전기공학부, 성균관대학교) ;
  • 조영현 (전자전기공학부, 성균관대학교) ;
  • 이준신 (전자전기공학부, 성균관대학교)
  • Received : 2018.04.06
  • Accepted : 2018.06.20
  • Published : 2018.06.30
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Abstract

The traditional silicon heterojunction solar cells consist of intrinsic amorphous silicon to prevent recombination of the silicon surface and doped amorphous silicon to transport the photo-generated electrons and holes to the electrode. Back contact solar cells with silicon heterojunction exhibit very high open-circuit voltages, but the complexity of the process due to form the emitter and base at the backside must be addressed. In order to solve this problem, the structure, manufacturing method, and new materials enabling the carrier selective contact (CSC) solar cell capable of achieving high efficiency without using a complicated structure have recently been actively developed. CSC solar cells minimize carrier recombination on metal contacts and effectively transfer charge. The CSC structure allows very low levels of recombination current (eg, Jo < 9fA/cm2), thereby achieves high open-circuit voltage and high efficiency. This paper summarizes the core technology of CSC solar cell, which has been spotlighted as the next generation technology, and is aiming to speed up the research and development in this field.

Keywords

References

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