Polymer assisted growth of high-quality perovskite films by Lewis acid-base adduct for efficient planar-heterojunction solar cells
Polymer assisted growth of high-quality perovskite films by Lewis acid-base adduct for efficient planar-heterojunction solar cells
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聚合物通过路易斯酸碱加合物辅助生长高质量钙钛矿薄膜,用于高效平面异质结太阳能电池
DOI:
10.1016/j.materresbull.2017.07.043
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发表时间:
2017-11
影响因子:
5.4
通讯作者:
Yuejin Zhu
中科院分区:
文献类型:
--
作者:
Xianyu Jia;Ziyang Hu;Jie Xu;Like Huang;Jing Zhang;Jianjun Zhang;Yuejin Zhu
Long-chain insulating polymers dissolved in perovskite precursor solution can assemble the polymer scaffold acted as the function of TiO2porous layer to improve the quality of the perovskite films. Here, perovskite films with high electronic quality were prepared by mediating nucleation and crystal growth. Polymer post treatment can induce Lewis acid-base reaction with PbCl2, which alleviates the reaction velocity between PbCl2and CH3NH3I, and then retard perovskite crystallization. The interactions between the perovskite films and polymer with different concentration are addressed to interpret the function and evolution of the polymer long-chains during the annealing process. These solar cells exhibit efficiency more than 15% with small variation. Our work demonstrates the value of retarding nucleation and crystal growth by Lewis acid-base adducts for high-quality perovskite films.
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