Improved Pore-Filling and Passivation of Defects in Hole-Conductor-Free, Fully Printable Mesoscopic Perovskite Solar Cells Based on D-Sorbitol Hexaacetate-Modified MAPbI(3)
Improved Pore-Filling and Passivation of Defects in Hole-Conductor-Free, Fully Printable Mesoscopic Perovskite Solar Cells Based on D-Sorbitol Hexaacetate-Modified MAPbI(3)
复制标题
基于 D-山梨醇六乙酸酯改性 MAPbI(3) 的无空穴导体、完全可印刷介观钙钛矿太阳能电池中改进的孔隙填充和缺陷钝化
DOI：
10.1021/acsami.0c15554
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发表时间：
2020
影响因子：
9.5
通讯作者：
Zhang Hailiang
中科院分区：
文献类型：
--
作者：
Liu Jian;Wang Dongjie;Chen Kun;She Bin;Liu Baichen;Huang Yu;Xie Wenfa;Zhang Jian;Zhang Hailiang
For hole-conductor-free, fully printable mesoscopic perovskite solar cells (MPSCs), it is difficult to achieve free and efficient diffusion of perovskite precursors in micron-scale porous structures. Thus, the wettability of the perovskite precursor is one of the most crucial factors that determine the performance of MPSCs. Here,d-sorbitol hexaacetate (DSHA) is introduced as an additive for fabricating hole-conductor-free, fully printable MPSCs based on methylammonium lead iodide (MAPbI3). The fabricated MPSCs exhibited an efficiency of 14.33%. Moreover, the influence of DSHA on the optical properties, morphology, and filling of perovskite in the MPSCs has been systematically investigated. The results revealed that DSHA effectively optimized the morphology, improved the pore-filling, and passivated the defects of perovskite films. Remarkably, the unencapsulated MPSCs retained 93% of their original power-conversion efficiency (PCE) after 45 days of storage in air with humidity of 50 ± 5%.
