MoO3 INTERFACE MODIFICATION IMPROVING PERFORMANCE OF BLADE COATED PEROVSKITE SOLAR CELLS

Guo Xin; Yao Xin; Liu Zugang

doi:10.19912/j.0254-0096.tynxb.2023-1435

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (4) : 101-106. DOI: 10.19912/j.0254-0096.tynxb.2023-1435

MoO₃ INTERFACE MODIFICATION IMPROVING PERFORMANCE OF BLADE COATED PEROVSKITE SOLAR CELLS

Guo Xin, Yao Xin, Liu Zugang

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Abstract

In this study, the influence of introducing MoO₃ hole modification layer between hole transport layer Spiro-OMeTAD and Ag electrode on the photovoltaic performance of the blade-coated perovskite solar cell device was investigated. The mechanism was examined through a series of tests encompassing electrical conductivity measurement, steady-state photoluminescence spectra, contact angle with water, etc. The results of experiments and tests indicate that MoO₃ can effectively improve hole transport capability and reduce interfacial resistance while protecting the underlying Spiro-OMeTAD and perovskite layers from water and oxygen degradation in the air. Based on MoO₃ interface modification layers, the blade-coated perovskite solar cell device's photovoltaic conversion efficiency increases from 15.14% to 18.30%, especially the average fill factor rises from 60% to 76%. At the same time, the stability of devices is also improved, with the unpackaged device still maintaining 90% of it initial efficiency after 400 hours.

Key words

perovskite solar cells / molybdenum oxide / thermal vapor deposition coating / interface modification / hole transport / stability

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Guo Xin, Yao Xin, Liu Zugang. MoO₃ INTERFACE MODIFICATION IMPROVING PERFORMANCE OF BLADE COATED PEROVSKITE SOLAR CELLS[J]. Acta Energiae Solaris Sinica. 2024, 45(4): 101-106 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1435

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