Current Applied Physics

  • 제18권12호
  • /
  • Pages.1600-1604
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  • 2018
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  • 1567-1739(pISSN)
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  • 1567-1739(eISSN)
한국물리학회 (Korean Physical Society)
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Comparison of light-induced degradation and regeneration in P-type monocrystalline full aluminum back surface field and passivated emitter rear cells

  • Cho, Eunhwan (School of Electrical and Computer Engineering, Georgia Institute of Technology) ;
  • Rohatgi, Ajeet (School of Electrical and Computer Engineering, Georgia Institute of Technology) ;
  • Ok, Young-Woo (School of Electrical and Computer Engineering, Georgia Institute of Technology)
  • 투고 : 2018.07.11
  • 심사 : 2018.10.17
  • 발행 : 2018.12.31
⟨ 이전 논문 다음 논문 ⟩

초록

This paper reports on a systematic and quantitative assessment of light induced degradation (LID) and regeneration in full Al-BSF and passivated emitter rear contact cells (PERC) along with the fundamental understanding of the difference between the two. After LID, PERC cells showed a much greater loss in cell efficiency than full Al-BSF cells (~0.9% vs ~0.6%) because the degradation in bulk lifetime also erodes the benefit of superior BSRV in PERC cells. Three main regeneration conditions involving the combination of heat and light ($75^{\circ}C/1\;Sun/48h$, $130^{\circ}C/2\;Suns/1.5h$ and $200^{\circ}C/3\;Suns/30s$) were implemented to eliminate LID loss due to BO defects. Low temperature/long time ($75^{\circ}C/48h$) and high temperature/short time ($200^{\circ}C/30s$) regeneration process was unable to reach 100% stabilization. The intermediate temperature/time ($130^{\circ}C/1.5h$) generation achieved nearly full recovery and stabilization (over 99%) for both full Al-BSF and PERC cells. We discussed the effect of temperature, time and suns in regeneration mechanism for two cells.

키워드

과제정보

연구 과제 주관 기관 : Korea Institute of Energy Technology Evaluation and Planning

참고문헌

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피인용 문헌

  1. Output power behavior of passivated emitter and rear cell photovoltaic modules during early installation stage: influence of light-induced degradation vol.58, pp.10, 2019, https://doi.org/10.7567/1347-4065/ab42ba