Solution-Processed Molybdenum Trioxide as Hole Selective Contact for Crystalline Silicon Solar Cells

Ling Yu Wang, Ting Yun Yang, Chien Chi Huang, Yu Chiang Chao, Hsin Fei Meng, Peichen Yu

研究成果: 書貢獻/報告類型會議論文篇章

摘要

High-efficiency silicon solar cells requires an effective carrier selective contact. Over the past few years, molybdenum trioxide (MoO3) has been widely used as the hole selective contact (HSC) for silicon heterojunction solar cells. The high work function and wide energy gap lead to favorable band bending for hole transport across the MoO3/Si interface. In previous studies, the MoO3 is commonly deposited by thermal evaporation. Here, we propose a simple solution-processed method to form a MoO3 HSC for conventional crystalline silicon (c-Si) solar cells. The crystalline MoO3 nanoparticle solution with a concentration of 2.3-2.7wt% was blade coated on the rear side of an n+/p silicon solar cell without an antireflective coating. By measuring the current-voltage (I-V), contact resistivity (ρc), and external quantum efficiency (EQE), we investigate the photoelectric properties of the solar cells incorporating the MoO3 nanoparticle layer. We show that the MoO3 HSC has a low contact resistivity of 29.5 mΩ cm between p-type Si and the silver electrode. The EQE exhibits enahcement on the near-infrared wavelength regime, indicating a field passivation effect. Overall, the n+/p c-Si solar cell incorporating the solution-processed MoO3 HSC exhibits an improved power conversion efficiency (PCE) of 11.8% due to an increased open-circuit voltage (Voc) and fill factor (FF).

原文英語
主出版物標題2021 IEEE 48th Photovoltaic Specialists Conference, PVSC 2021
發行者Institute of Electrical and Electronics Engineers Inc.
頁面1062-1064
頁數3
ISBN(電子)9781665419222
DOIs
出版狀態已發佈 - 2021 六月 20
事件48th IEEE Photovoltaic Specialists Conference, PVSC 2021 - Fort Lauderdale, 美国
持續時間: 2021 六月 202021 六月 25

出版系列

名字Conference Record of the IEEE Photovoltaic Specialists Conference
ISSN(列印)0160-8371

會議

會議48th IEEE Photovoltaic Specialists Conference, PVSC 2021
國家/地區美国
城市Fort Lauderdale
期間2021/06/202021/06/25

ASJC Scopus subject areas

  • 控制與系統工程
  • 工業與製造工程
  • 電氣與電子工程

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