Toward stable lead halide perovskite solar cells: A knob on the A/X sites components

Shurong Wang; Aili Wang; Feng Hao

doi:10.1016/j.isci.2021.103599

Toward stable lead halide perovskite solar cells: A knob on the A/X sites components

iScience. 2021 Dec 9;25(1):103599. doi: 10.1016/j.isci.2021.103599. eCollection 2022 Jan 21.

Authors

Shurong Wang¹, Aili Wang¹, Feng Hao¹

Affiliation

¹ School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China.

Abstract

Hybrid lead halide ABX₃ perovskite solar cells (PSCs) have emerged as a strong competitor to the traditional solar cells with a certified power conversion efficiency beyond 25% and other remarkable features such as light weight, solution processability, and low manufacturing cost. Further development on the efficiency and stability brings forth increasing attention in the component regulation, such as partial or entire substitution of A/B/X sites by alternative elements with similar size. However, the relationships between composition, property, and performance are poorly understood. Here, the instability of PSCs from the photon-, moisture-, thermal-, and mechanical-induced degradation was first summarized and discussed. In addition, the component regulation from the A/X sites is highlighted from the aspects of band level alignment, charge-carrier dynamics, ion migration, crystallization behavior, residual strain, stoichiometry, and dimensionality control. Finally, the perspectives and future outlooks are highlighted to guide the rational design and practical application of PSCs.

Keywords: Engineering; Photon-electron interaction; Physics.

Publication types

Review