Surface Passivation on PEDOT:PSS in conventional perovskite solar cells
2019 IEEE 46TH PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)(2019)
Abstract
PEDOT:PSS has been widely used as a hole conductive polymer due to its high conductivity and transparency, which is ideal for thin film solar cell with large-scale printing processability. We demonstrated a simple way to enhance the efficiency and reproducibility of PEDOT:PSS-based normal-structure perovskite solar cells. Metal oxide MoO3 layer has been thermal-evaporated onto PEDOT:PSS as a surface passivation layer. The PCE of perovskite solar cell has been enhanced by 18% after MoO3 passivation and the short circuit current density (J(sc)), open circuit voltage (V-oc) and fill factor (FF) has been improved simultaneously. The performance enhancement of MoO3 modified PSCs is attributed to the reduced current leakage, enhanced hole extraction characteristics, and mitigated the trap-assisted interfacial recombination.
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Key words
conventional perovskite solar cells,solar cells,pedotpss
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