Current Photovoltaic Research

Korea Photovoltaic Society (한국태양광발전학회)
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Optical Absorption Enhancement for Ultrathin c-Si Solar Cells using Ag Nanoparticle and Nano-hole Arrays

Ag 나노입자와 나노홀 배열구조를 이용한 초박형 단결정 Si 태양전지의 광흡수 증진

  • Kim, Sujung (Department of Physics, Ewha Womans University) ;
  • Cho, Yunae (Department of Physics, Ewha Womans University) ;
  • Sohn, Ahrum (Department of Physics, Ewha Womans University) ;
  • Kim, Dong-Wook (Department of Physics, Ewha Womans University)
  • 김수정 (이화여자대학교 물리학과) ;
  • 조윤애 (이화여자대학교 물리학과) ;
  • 손아름 (이화여자대학교 물리학과) ;
  • 김동욱 (이화여자대학교 물리학과)
  • Received : 2016.04.26
  • Accepted : 2016.05.16
  • Published : 2016.06.30
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Abstract

We investigated the influences of Ag nanoparticle (NP) arrays and surface nanohole (NH) patterns on the optical characteristics of 10-${\mu}m$-thick c-Si wafers using finite-difference time-domain (FDTD) simulations. In particular, we comparatively studied the plasmonic effects of both monomer arrays (MA) and heptamer arrays (HA) consisting of identical Ag NPs. HA improved the optical absorption of the c-Si wafers in much wider wavelength range than MA, with the help of hybridized plasmon modes. The light trapping capability of the NH array pattern is superior to that of the Ag plasmonic NPs. We also found that the addition of the Ag HA on the wafers with surface NH patterns further enhanced optical absorption: the expected short-circuit current density was as high as $34.96mA/cm^2$.

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References

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