Li Pei-Shan, Balamurugan Rathinam, Liu Bo-Tau, Lee Rong-Ho, Chou Hsueh-Tao
Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Yunlin 64002, Taiwan.
Department of Chemical Engineering, National Chung Hsing University, Taichung 40227, Taiwan.
Nanomaterials (Basel). 2019 Jun 23;9(6):908. doi: 10.3390/nano9060908.
Low-temperature, solution-processed, highly efficient hybrid organic/inorganic perovskite planar heterojunction solar cells were fabricated by incorporating reactive crystalline titania (h-TAc) into MAPbI layers. The h-TAc was prepared by the sol-gel reaction at low temperature followed by solvothermal treatment. The photoelectrical properties of the solar cells with h-TAc were analyzed. The incorporation with 0.85-wt% h-TAc showed the highest power conversion efficiency (PCE, 15.9%), increasing 69% compared to the pristine cell. The enhancement arose from large-grained microstructures, leading to a low rate of charge recombination. The carboxyl groups chelated on the surface of h-TAc revealed a strong attraction to lead ions, which are significantly helpful to MAPbI crystal growth.
通过将反应性结晶二氧化钛（h-TAc）掺入MAPbI层中，制备了低温溶液法加工的高效有机/无机杂化钙钛矿平面异质结太阳能电池。h-TAc是通过低温溶胶-凝胶反应，然后进行溶剂热处理制备的。分析了含有h-TAc的太阳能电池的光电性能。掺入0.85重量%的h-TAc显示出最高的功率转换效率（PCE，15.9%），与原始电池相比提高了69%。这种增强源于大晶粒微观结构，导致电荷复合率较低。h-TAc表面螯合的羧基对铅离子表现出强烈的吸引力，这对MAPbI晶体生长非常有帮助。
