Improved Performance and Stability of Quasi-Two-Dimensional Perovskite Solar Cells by Post-treatment with Acetaminophen

Chen-Guang Xia; Hao-Jie Lv; Yue-Feng Liu; Zhen-Long Zhang

doi:10.1021/acsami.3c17529

Improved Performance and Stability of Quasi-Two-Dimensional Perovskite Solar Cells by Post-treatment with Acetaminophen

ACS Appl Mater Interfaces. 2024 Mar 13;16(10):12446-12454. doi: 10.1021/acsami.3c17529. Epub 2024 Mar 1.

Authors

Chen-Guang Xia¹, Hao-Jie Lv¹, Yue-Feng Liu¹, Zhen-Long Zhang^{1

2}

Affiliations

¹ School of Physics and Electronics, Henan University, Kaifeng 475004, China.
² International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, Kaifeng 475004, China.

PMID: 38427847
DOI: 10.1021/acsami.3c17529

Abstract

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.

Keywords: acetaminophen; performance; perovskite solar cells; post-treatment; two-dimensional.