Issue 12, 2023

The rise of quasi-2D Dion–Jacobson perovskites for photovoltaics

Abstract

With the advance of nanotechnology, the past couple of years have witnessed the fast development of quasi two-dimensional (2D) halide perovskites, which exhibit outstanding long-term stability against moisture and heat, compared with their three-dimensional (3D) counterparts. As one of the most common structures in 2D halide perovskites, quasi-2D Dion–Jacobson (DJ) perovskites show multiple-quantum-well structures with n layers of [BX6]4− octahedral inorganic sheets sandwiched by two layers of diammonium spacers, thus exhibiting superior structural stability due to the elimination of van der Waals gaps. Thanks to the achievement of high power conversion efficiency accompanied by impressive stability, quasi-2D DJ perovskite solar cells (PSCs) have recently drawn extensive attention in the field. This review first introduces the fundamental understanding of quasi-2D DJ halide perovskites, including their superior stability, high exciton binding energy, and compositional flexibility and tunable properties. We then summarize detailed strategies to prepare high-quality quasi-2D DJ perovskites for PSCs, encompassing compositional engineering, solvent engineering, additive addition, and annealing processes. Moreover, the surface/interface modification and 2D–3D hybrid perovskite heterojunction are also discussed, for providing strategies to optimize the fabrication of quasi-2D DJ PSCs. Lastly, current challenges and perspectives toward the future development of quasi-2D DJ perovskites for photovoltaics are outlined.

Graphical abstract: The rise of quasi-2D Dion–Jacobson perovskites for photovoltaics

Article information

Article type
Review Article
Submitted
31 Maijs 2023
Accepted
08 Sept. 2023
First published
14 Sept. 2023

Nanoscale Horiz., 2023,8, 1628-1651

The rise of quasi-2D Dion–Jacobson perovskites for photovoltaics

J. Chen, Z. Zhai, Q. Liu and H. Zhou, Nanoscale Horiz., 2023, 8, 1628 DOI: 10.1039/D3NH00209H

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