文献类型：期刊文献

英文题名：Self-Organized Co3O4-SrCO3 Percolative Composites Enabling Nanosized Hole Transport Pathways for Perovskite Solar Cells

作者：Ge, Bing[1];Zhou, Zi Ren[1];Wu, Xue Feng[1];Zheng, Li Rong[2];Dai, Sheng[3,4];Chen, Ai Ping[1];Hou, Yu[1];Yang, Hua Gui[1];Yang, Shuang[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Engn Res Ctr Hierarch Nanomat, Minist Educ,Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China;[3]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Shanghai Key Lab Funct Mat Chem,Key Lab Adv Mat, Sch Chem & Mol Engn,Joint Int Res Lab Precis Chem, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Joint Int Res Lab Precis Chem & Mol Engn, Sch Chem & Mol Engn,Inst Fine Chem,Shanghai Key L, Shanghai 200237, Peoples R China

年份：2021

卷号：31

期号：46

外文期刊名：ADVANCED FUNCTIONAL MATERIALS

收录：;EI(收录号：20213310780274);WOS:【SCI-EXPANDED(收录号:WOS:000685926100001)】；

基金：This work was financially supported by National Natural Science Fund for Excellent Young Scholars (52022030), National Ten Thousand Talent Program for Young Top-notch Talent (YD0130540), National Natural Science Fund for Distinguished Young Scholars (51725201), National Natural Science Foundation of China (51972111, 51902185), International (Regional) Cooperation and Exchange Projects of the National Natural Science Foundation of China (51920105003), Innovation Program of Shanghai Municipal Education Commission (E00014), the Fundamental Research Funds for the Central Universities (JKD01211623, JKVD1211041), Shanghai Engineering Research Center of Hierarchical Nanomaterials (18DZ2252400) and Shanghai Rising-star and Shuguang Programs (20QA1402400, 17SG30). Additional support was provided by the Feringa Nobel Prize Scientist Joint Research Center. The authors also thank the Frontiers Science Center for Materiobiology and Dynamic Chemistry.

语种：英文

外文关键词：band alignment; hole transport; lead halide perovskites; percolative architecture; solar cells

摘要：Perovskite solar cells (PSCs) are expected to profoundly impact the photovoltaic society on account of its high-efficiency and cost-saving manufacture. As a key component in efficient PSCs, the hole transport layer (HTL) can selectively collect photogenerated carriers from perovskite absorbers and prevent the charge recombination at interfaces. However, the mainstream organic HTLs generally require multi-step synthesis and hygroscopic dopants that significantly limit the practical application of PSCs. Here, a self-organized percolative architecture composed of narrow bandgap oxides (e.g., Co3O4, NiO, CuO, Fe2O3, and MnO2) and wide bandgap SrCO3 oxysalt as efficient HTLs for PSCs is presented. The percolation of dual phases offers nanosized hole transport pathways and optimized interfacial band alignments, enabling significantly improved charge collection compared with the single phase HTLs. As a consequence, the power conversion efficiency boosted from 8.08% of SrCO3 based device and 15.47% of Co3O4 based device to 21.84% of Co3O4-SrCO3 based one without notable hysteresis. The work offers a new direction by employing percolative materials for efficient charge transport and collection in PSCs, and would be applicable to a wide range of opto-electronic thin film devices.