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
Yuejin Zhu
中科院分区:
材料科学2区
文献类型:
--
作者:
Xianyu Jia;Ziyang Hu;Jie Xu;Like Huang;Jing Zhang;Jianjun Zhang;Yuejin Zhu

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长链绝缘聚合物溶解在钙钛矿前驱体溶液中,可以组装成聚合物支架,起到TiO2多孔层的作用,提高钙钛矿薄膜的质量。在这里,具有高的电子质量的钙钛矿薄膜制备介导的成核和晶体生长。聚合物后处理可诱导PbCl 2与刘易斯酸碱反应,加快PbCl 2与CH3 NH3 I的反应速度,从而抑制钙钛矿晶化。研究了不同浓度的钙钛矿薄膜与聚合物之间的相互作用,解释了退火过程中聚合物长链的作用和演变。这些太阳能电池表现出超过15%的效率,具有小的变化。我们的工作证明了刘易斯酸碱加合物对高质量钙钛矿薄膜的成核和晶体生长的阻滞作用。
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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