https://scholars.lib.ntu.edu.tw/handle/123456789/392241
Title: | Functional p-Type, Polymerized Organic Electrode Interlayer in CH3NH3PbI3 Perovskite/Fullerene Planar Heterojunction Hybrid Solar Cells | Authors: | Chiang, T.-Y. Fan, G.-L. Jeng, J.-Y. Chen, K.-C. Chen, P. Wen, T.-C. Guo, T.-F. Wong, K.-T. KEN-TSUNG WONG |
Keywords: | electrode interlayer; flexible; hybrid solar cell; perovskite; planar heterojunction; thermally curable | Issue Date: | 2015 | Journal Volume: | 7 | Journal Issue: | 44 | Start page/Pages: | 24973-24981 | Source: | ACS Applied Materials and Interfaces | Abstract: | Thermal 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. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-84947068428&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/392241 |
DOI: | 10.1021/acsami.5b09012 | SDG/Keyword: | Conducting 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 cells |
Appears in Collections: | 化學系 |
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