Room Temperature Slot-Die Coated Perovskite Layer Modified With Sulfonyl-γ-AApeptide For High Performance Perovskite Solar Devices

Authors

Seid Yimer Abate, Jackson State UniversityFollow
Ziqi Yang, University of South FloridaFollow
Surabhi Jha, University of Southern Mississippi
Guorong Ma, University of Southern MississippiFollow
Zhongliang Ouyang, University of AlabamaFollow
Haixin Zhang, Mississippi State UniversityFollow
Shafi Muhammad, Jackson State University
Nihar Pradhan, Jackson State University
Xiaodan Gu, University of Southern MississippiFollow
Derek Patton, University of Southern MississippiFollow
Kun Wang, Mississippi State University
Dawen Li, University of AlabamaFollow
Jianfeng Cai, University of South FloridaFollow
Qilin Dai, Jackson State UniversityFollow

Document Type

Article

Publication Date

2-1-2023

School

Polymer Science and Engineering

Abstract

Perovskite solar cells (PSCs) exhibited remarkable progress for small aperture area cells, however, the performance of its counterpart, large aperture area cells, lags due to non-uniform and defective perovskite layers. Here, we fabricate reproducible large area homogeneous perovskite films at room temperature and without controlling humidity (up to 40 % RH) with a slot die coater on a c-TiO₂ layer deposited using a large area chemical bath. A new artificial peptide – sulfonyl-γ-AApeptide (F-GLU-S) was employed to modify the slot-die coated perovskite surface, grain boundaries and electronic defects. The multi-functional F-GLU-S with carbonyl, carboxyl, sulfonyl, benzene, and chloro groups was capable of strongly interacting with the perovskite layer and repairing the uncoordinated Pb²⁺ ions and halide vacancies. As a result, both the electron and hole densities of defects were significantly suppressed; consequently, the non-radiative recombination was effectively suppressed for the modified device which can be explicitly seen in the device performance where both V_oc and FF of the modified device improved considerably. Therefore, F-GLU-S modified slot-die coated MAPbI₃ – based devices demonstrated outstanding performance of 21.44 % PCE with a V_oc of 1.13 V, J_sc of 24.64 cm⁻², and FF 76.99 %. Moreover, F-GLU-S passivation impeded the infiltration of moisture and oxygen due to its hydrophobic nature and defect repair potential. As a result, the modified device retained above 92 % of its original PCE after 720 h in air (room temperature and 40–60 % RH).

Publication Title

Chemical Engineering Journal

Volume

457

Recommended Citation

Abate, S. Y., Yang, Z., Jha, S., Ma, G., Ouyang, Z., Zhang, H., Muhammad, S., Pradhan, N., Gu, X., Patton, D., Wang, K., Li, D., Cai, J., Dai, Q. (2023). Room Temperature Slot-Die Coated Perovskite Layer Modified With Sulfonyl-γ-AApeptide For High Performance Perovskite Solar Devices. Chemical Engineering Journal, 457.
Available at: https://aquila.usm.edu/fac_pubs/20546