Effect of Silicon Surface for Perovskite/Silicon Tandem Solar Cells: Flat or Textured?

ACS Applied Materials & Interfaces
Hiroyuki KandaSeigo Ito

Abstract

Perovskite and textured silicon solar cells were integrated into a tandem solar cell through a stacking method. To consider the effective structure of silicon solar cells for perovskite/silicon tandem solar cells, the optic and photovoltaic properties of textured and flat silicon surfaces were compared using mechanical-stacking-tandem of two- and four-terminal structures by perovskite layers on crystal silicon wafers. The reflectance of the texture silicon surface in the range of 750-1050 nm could be reduced more than that of the flat silicon surface (from 2.7 to 0.8%), which resulted in increases in average incident photon to current conversion efficiency values (from 83.0 to 88.0%) and current density (from 13.7 to 14.8 mA/cm2). Using the texture surface of silicon heterojunction (SHJ) solar cells, the significant conversion efficiency of 21.4% was achieved by four-terminal device, which was an increase of 2.4% from that of SHJ solar cells alone.

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Citations

Feb 18, 2021·Chemical Communications : Chem Comm·Yuiga NakamuraKunihisa Sugimoto
Oct 16, 2019·ACS Applied Materials & Interfaces·Xiaorong JinJingjun Xu
Oct 22, 2020·ACS Applied Materials & Interfaces·Naoyuki ShibayamaSeigo Ito

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