4.8 Article

Area-Scalable Zn2SnO4 Electron Transport Layer for Highly Efficient and Stable Perovskite Solar Modules

期刊

ACS APPLIED MATERIALS & INTERFACES
卷 14, 期 20, 页码 23297-23306

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c24757

关键词

perovskite solar modules; thick Zn2SnO4 ETL; UV filter; improved crystallization; high efficiency and stability

资金

  1. Deputyship for Research & Innovation, Ministry of Education in Saudi Arabia [526]
  2. China Scholarship Council (CSC)
  3. US Department of Energy (DOE) [DE-AC36-08GO28308]
  4. DOE Office of Energy Efficiency and Renewable Energy Solar Energy Technologies Office under the De-risking Halide Perovskite Solar Cells Program

向作者/读者索取更多资源

The method of preparing a uniform and scalable thick Zn2SnO4 ETL by CBD reported in this study yields high-performance PSMs, with excellent electrical properties and enhanced optical transmittance in the visible region. The Zn2SnO4 ETL influences the perovskite layer formation, facilitating electron extraction and collection, resulting in improved photovoltaic performance in PSMs.
The development of a scalable chemical bath deposition (CBD) process facilitates the realization of electron transporting layers (ETLs) for large-area perovskite solar modules (PSMs). Herein, a method to prepare a uniform and scalable thick Zn2SnO4 ETL by CBD, which yielded high-performance PSMs, is reported. This Zn2SnO4 ETL exhibits excellent electrical properties and enhanced optical transmittance in the visible region. Moreover, the Zn2SnO4 ETL influences the perovskite layer formation, yielding enhanced crystallinity, increased grain size, and a smoother surface, thus facilitating electron extraction and collection from the perovskite to the ETL. Zn2SnO4 thereby yields PSMs with a remarkable photovoltaic performance, low hysteresis index, and high device reproducibility. The champion PSM exhibited a power conversion efficiency (PCE) of 22.59%, being among the highest values published so far. In addition, the CBD Zn2SnO4-based PSMs exhibit high stability, retaining more than 88% of initial efficiency over 1000 h under continuous illumination. This demonstrates that CBD Zn2SnO4 is an appropriate ETL for high-efficiency PSMs and a viable new process for their industrialization.

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