The device configuration with mesoporous titanium dioxide(m-TiO2)has garnered considerable atten-tion as a promising solution for high-stable perovskite and dye-sensitized solar cells,although its ap-plication in organic solar cells remains unexplored.In this communication,we have incorporated this structure into both bulk-heterojunction(BHJ)and single-component organic solar cells(SCOSCs).Surpris-ingly,mesoporous OSCs(M-OSCs)demonstrate a deteriorative efficiency in BHJ-type cells,whereas this configuration succeeds in SCOSCs,exhibiting competitive performance with planar OSCs(P-OSCs).This pioneering study has resulted in a competitive power conversion efficiency of 9.67％for m-TiO2-based cells,marking a significant milestone in the advancement of OSCs.Importantly,profiting from the better ultraviolet resistance of m-TiO2 than zinc oxide,this M-OSC exhibits superior photostability than that of P-OSCs when subjected to continuous one-sun(AM1.5G)illumination.In its entirety,this research not only introduces the concept of M-OSCs for the first time but also unveils a novel device architecture poised to address the long-term stability concerns within the realm of OSCs.
Mesoporous titanium dioxideSingle-component organic solar cellsBulk-heterojunctionUltraviolet resistancePhotostability
Chengcheng Xie、Chengyi Xiao、Hongshuo Niu、Guitao Feng、Weiwei Li
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Engineering Research Center for Energy Conversion and Storage Technology of Guizhou,School of Chemistry and Chemical Engineering,Guizhou University,Guiyang 550025,China
Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites,Beijing University of Chemical Technology,Beijing 100029,China
Department of Applied Physics,The Hong Kong Polytechnic University,Hong Kong SAR 999077,China
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