Role of Polysilicon in Poly-Si/SiOx Passivating Contact Solar Cells

  title={Role of Polysilicon in Poly-Si/SiOx Passivating Contact Solar Cells},
  author={Hyunjung Park and Se Jin Park and Soohyun Bae and Ji Yeon Hyun and Chang Hyun Lee and S. H. Shin and Yoonmook Kang and Hae-Seok Lee and Donghwan Kim},
  journal={2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC)},
We investigated the passivation qualities of polySi contacts according to several material and fabrication properties to study their role in improving the efficiency of solar cells. Our observations indicate that P in-diffusion degrades the implied open circuit voltage (iV$_{\mathbf {OC}}$), while gettering increases it. Thick, highly doped poly-Si is needed for high iV$_{\mathbf {OC}}$; however, this increases parasitic absorption. Hence, we suggest a new approach to fabricating highly doped… CONTINUE READING

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