Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Optimization and Efficiency Improvement of BCSC Solar Cells Using $MgF_{2}/CeO_{2}$Double Layer Antireflection Coatings

$MgF_{2}/CeO_{2}$ 이중반사방지막을 이용한 BCSC태양천지의 효율향상과 최적화

  • 이욱재 (성균관대학교 전기전자컴퓨터공학부) ;
  • 임동건 (성균관대학교 전기전자컴퓨터공학부) ;
  • 이준신 (성균관대학교 전기전자컴퓨터공학부)
  • Published : 2001.07.01
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Abstract

This paper describes an efficiency improvement of buried contact solar cell (BSCS) with a structure of MgF$_2$/CeO$_2$/Ag/Cu/Ni grid/n$^{+}$ emitter/p-type Si base/p$^{+}$/Al. Theoretical and experimental investigations were performed on a double layer antireflection (DLAR) coating of MgF$_2$/CeO$_2$. We investigated CeO$_2$ films as an AR layer because they have a proper refractive index of 2.46 and demonstrate the same lattice constant as Si substrate. An optimized DLAR coating shewed a reflectance as low as 2.04 % in the wavelengths ranged from 0.4 ${\mu}{\textrm}{m}$ to 1.1 ${\mu}{\textrm}{m}$. BCSC cell efficiency was improved from 16.2 % without any AR coating to 19.9 % by employing DLAR coatings. Further details on MgF$_2$/CeO$_2$ DLAR coatings on the BCSC cells are presented in this paper.per.

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