材料科学
钙钛矿(结构)
对乙酰氨基酚
理论(学习稳定性)
纳米技术
化学工程
工程物理
复合材料
医学
药理学
计算机科学
机器学习
工程类
作者
Cathy H. Xia,Hang Lv,Yuefeng Liu,Zhenlong Zhang
标识
DOI:10.1021/acsami.3c17529
摘要
Recently, perovskite solar cells (PSCs) based on quasi-two-dimensional (quasi-2D) perovskites have drawn more attention due to their excellent stability, although their efficiencies are still lower than those of 3D ones. Here we applied post-treatment of 2D perovskite GAMA5Pb5I16 (GA = guanidinium, MA = methylammonium) films with acetaminophen (AMP) to improve their performance. The efficiency of the solar cells with 2 mg/mL AMP post-treatment increased to 18.01% from 16.72% for those without post-treatment. The efficiency improvement results from the enlarged grain size, reduced trap state density, and better energy level matching after AMP post-treatment. In addition, the stability of the solar cells is improved. The solar cells with AMP post-treatment maintain 91% of the original power conversion efficiency value after aging for 30 days in the atmosphere. This work opens a new approach for the efficiency and stability enhancement of quasi-2D PSCs.
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