TY - DATA T1 - Ultrathin Hole Extraction Layer for Efficient Inverted Perovskite Solar Cells PY - 2018/06/13 AU - Dianyi Liu AU - Qiong Wang AU - Mark Elinski AU - Pei Chen AU - Christopher J. Traverse AU - Chenchen Yang AU - Margaret Young AU - Thomas W. Hamann AU - Richard R. Lunt UR - https://acs.figshare.com/articles/journal_contribution/Ultrathin_Hole_Extraction_Layer_for_Efficient_Inverted_Perovskite_Solar_Cells/6506999 DO - 10.1021/acsomega.8b00741.s001 L4 - https://ndownloader.figshare.com/files/11970089 KW - film morphology KW - power conversion efficiency KW - PSC performance KW - open-circuit voltage KW - ultrathin PEDOT layers KW - PEDOT layers KW - 0.95 V KW - Efficient Inverted Perovskite Solar Cells Inverted perovskite KW - structure PSCs KW - ultrathin PEDOT layer KW - fabrication complexity KW - Ultrathin Hole Extraction Layer KW - hole transport layer KW - HTL KW - OC KW - device performance KW - PSC device N2 - Inverted perovskite solar cells (PSCs) incorporating poly­(3,4-ethylenedioxythiophene)–poly­(styrenesulfonate) (PEDOT) as the hole transport/extraction layer have been broadly investigated in recent years. However, most PSCs which incorporate PEDOT as the hole transport layer (HTL) suffer from lower device performance stemming from reduced photocurrent and low open-circuit voltage around 0.95 V. Here, we report an ultrathin PEDOT layer as the HTL for efficient inverted structure PSCs. The transparency, conductivity, and resulting film morphology were studied and compared with traditional architectures and thicker PEDOT layers. The PSC device incorporating an ultrathin PEDOT layer shows significant improvement in short-circuit current density (JSC), open-circuit voltage (VOC), and power conversion efficiency. Because ultrathin PEDOT layers can be easily obtained by dilution, this study suggests a simple way to improve the PSC performance and provide a route to further reduce the fabrication complexity and cost of PSCs. ER -