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首页> 外文期刊>Advanced functional materials >Light Management through Organic Bulk Heterojunction and Carrier Interfacial Engineering for Perovskite Solar Cells with 23.5 Efficiency
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Light Management through Organic Bulk Heterojunction and Carrier Interfacial Engineering for Perovskite Solar Cells with 23.5 Efficiency

机译：Light Management through Organic Bulk Heterojunction and Carrier Interfacial Engineering for Perovskite Solar Cells with 23.5 Efficiency

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Light management through organic bulk heterojunction (BHJ) has beenwidely reported to push up the performance of lead-based perovskite solarcells (PSCs) by extending the spectral response. However, the developmentof integrated perovskite/organic bulk heterojunction solar cells (IPSCs)encounters a bottleneck problem that the poor carrier extraction capabilityof perovskite and BHJ leads to the severe loss of open-voltage (V_(oc)) and fillfactor (FF). Herein, the strategy of introducing black phosphorous quantumdots (BPQDs) and cuprous oxide (CuO_x) into IPSCs is adopted, which notonly successfully extends the single-component PSCs light response to930 nm, but also significantly reduces the V_(oc) and FF loss of IPSCs. BPQDswith bipolar charge transport and high mobility characteristics improves theelectron/hole transport behaviors of perovskite and BHJ films. CuO_x withmatching energy levels is introduced between BHJ and Spiro-OMeTAD as abuffer layer, which provides good driving force for the transportation of holes.The champion device achieves a power conversion efficiency of 23.52. TheIPSCs devices also display an excellent long-term and humidity stability. Thiswork demonstrates an approach to solve the carrier extraction key issues thatlimits the performance of IPSCs, which achieves an instructive result in thedevelopment of PSCs light management.

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