Semiconductor Optoelectronics, Volume. 46, Issue 2, 240(2025)

A Comparative Study of PEDOT∶PSS/n-Si and MoOx/n-Si Heterojunction Solar Cells

WANG Jiawen1, CUI Yiqian2, YANG Xiaoqian1, ZHANG Yu1, and YU Wei2
Author Affiliations
  • 1College of Electronic and Informational Engineering
  • 2National-Local Joint Engineering Laboratory of New Energy Photoelectric Devices, College of Physics Science and Technology, Hebei University, Baoding 071002, CHN
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    This study systematically examines poly(3,4-ethylenedioxythiophene)∶polystyrene sulfonate (PEDOT∶PSS) and molybdenum oxide (MoOx) as hole transport materials for n-Si heterojunction tunnel oxide passivated contact (TOPCon) solar cells. Initially, the photoelectric properties of PEDOT∶PSS and MoOx films, including work function, resistivity, light absorption, and anti-reflection effect on silicon wafers, were analyzed. Subsequently, full-back electrode PEDOT∶PSS/n-Si and MoOx/n-Si heterojunction TOPCon solar cells, featuring rear-located P-N junctions, were fabricated and subjected to experimental comparisons. Performance evaluations, conducted using quantum efficiency (EQE), light J-V, dark J-V, and stability tests, indicate that PEDOT∶PSS/n-Si solar cells exhibited superior P-N junction quality and conversion efficiency. Conversely, MoOx/n-Si solar cells demonstrated higher open-circuit voltage and enhanced stability. These findings provide valuable insights for developing targeted optimization strategies to improve the performance of non-doped silicon-based heterojunction solar cells.

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    WANG Jiawen, CUI Yiqian, YANG Xiaoqian, ZHANG Yu, YU Wei. A Comparative Study of PEDOT∶PSS/n-Si and MoOx/n-Si Heterojunction Solar Cells[J]. Semiconductor Optoelectronics, 2025, 46(2): 240

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    Paper Information

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    Received: Jul. 30, 2024

    Accepted: Sep. 18, 2025

    Published Online: Sep. 18, 2025

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