MoO3 INTERFACE MODIFICATION IMPROVING PERFORMANCE OF BLADE COATED PEROVSKITE SOLAR CELLS
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.
perovskite solar cellsmolybdenum oxidethermal vapor deposition coatinginterface modificationhole transportstability
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