Environmental-Friendly Polymer for Efficient and Stable Inverted Perovskite Solar Cells with Mitigating Lead Leakage

Qi Cao, Tong Wang, Jiabao Yang, Yixin Zhang, Yuke Li, Xingyu Pu, Junsong Zhao, Hui Chen, Xiaoqiang Li, Ilhom Tojiboyev, Jiangzhao Chen, Lioz Etgar, Xuanhua Li

科研成果: 期刊稿件文章同行评审

106 引用 (Scopus)

摘要

Although perovskite solar cells (PSCs) are on the road to industrialization, the operational stability under high efficiency still needs to be improved, and the water solubility of lead ions (Pb2+) will cause environmental pollution problems. Herein, it is successfully implanted an environment-friendly (biodegradability) poly(butylene adipate-coterephthalate) polymer (PBAT) into the perovskite film, which can passivate the uncoordinated Pb2+ and neutral iodine defects of the perovskite material because of the adequate carbonyl groups and benzene rings in PBAT polymer, thereby regulating the crystallization of perovskite film with lower trap density, inhibiting the nonradiative recombination and improving charge carrier transport. As a result, the polymer-incorporated inverted PSCs achieve optimal conversion efficiencies of 22.07% (0.1 cm2) and 20.31% (1 cm2). Meanwhile, the incorporated device, after being encapsulated, exhibits a prominent improvement in operational stability of high-efficiency device under maximum power point tracking and continuous one sunlight illumination, maintaining the initial efficiency of 80% for 3249 h. More importantly, the polymer network can protect Pb2+ from being dissolved by water and prevent nearly 98% of Pb2+ from leaking by directly immersing the polymer-coated perovskite film in water. Environmental-friendly molecules provide new hope for solving lead poisoning and improving device operational stability under high efficiency.

源语言英语
文章编号2201036
期刊Advanced Functional Materials
32
32
DOI
出版状态已出版 - 8 8月 2022

指纹

探究 'Environmental-Friendly Polymer for Efficient and Stable Inverted Perovskite Solar Cells with Mitigating Lead Leakage' 的科研主题。它们共同构成独一无二的指纹。

引用此