Chiang, T.-Y.T.-Y.ChiangFan, G.-L.G.-L.FanJeng, J.-Y.J.-Y.JengChen, K.-C.K.-C.ChenChen, P.P.ChenWen, T.-C.T.-C.WenGuo, T.-F.T.-F.GuoKEN-TSUNG WONG2018-09-102018-09-102015http://www.scopus.com/inward/record.url?eid=2-s2.0-84947068428&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/392241Thermal curing of the styrene-functionalized 9,9-diarylfluorene-based triaryldiamine monomer (VB-DAAF) forms an ideal p-type organic electrode interlayer capable of resisting solvation of the polar precursor solution in fabricating methylammonium lead iodide (CH3NH3PbI3) perovskite/fullerene (C60) planar heterojunction hybrid solar cells. The polymerized VB-DAAF film exhibits a good energy level alignment with the valence-band-edge level of the CH3NH3PbI3 perovskite to facilitate the transport of holes. The large energy barrier to the conduction-band-edge level of the CH3NH3PbI3 perovskite effectively blocks electrons from reaching the positive electrode and reduces the photon energy loss due to recombination. The best-performing cell with the configuration of glass/indium-tin oxide/polymerized VB-DAAF/CH3NH3PbI3 perovskite/C60/bathocuproine/aluminum is free of a poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) layer to achieve an open-circuit voltage (VOC) = 1.02 V, a short-circuit current (JSC) = 18.92 mA/cm2, and a fill factor (FF) = 0.78, corresponding to a power conversion efficiency (PCE) of 15.17% under standard 1 sun AM 1.5G simulated solar irradiation. The performance is much superior to the device applying the PEDOT:PSS interlayer with photovoltaic parameters of VOC = 0.85 V, JSC = 16.37 mA/cm2, and FF = 0.74, corresponding to a PCE of 10.27%. Additionally, we had applied a UV-assisted process to polymerize the VB-DAAF film at relatively lower temperature and fabricate decent perovskite-based solar cells on the flexible substrate for real applications. © 2015 American Chemical Society.electrode interlayer; flexible; hybrid solar cell; perovskite; planar heterojunction; thermally curable[SDGs]SDG7Conducting polymers; Electrodes; Energy dissipation; Heterojunctions; Open circuit voltage; Perovskite; Polymers; Styrene; Conduction band edge; Energy level alignment; flexible; Hybrid solar cells; Photovoltaic parameters; Poly(3 ,4-ethylenedioxythiophene):poly(styrenesulfonate); Power conversion efficiencies; thermally curable; Solar cellsjournal article10.1021/acsami.5b090122-s2.0-84947068428WOS:000364726400068