Issue 16, 2023

All-inorganic perovskite solar cells featuring mixed group IVA cations

Abstract

All-inorganic perovskites are promising for solar cells owing to their potentially superior tolerance to environmental factors, as compared with their hybrid organic–inorganic counterparts. Over the past few years, all-inorganic perovskite solar cells (PSCs) have seen a dramatic improvement in certified power conversion efficiencies (PCEs), demonstrating their great potential for practical applications. Pb, Sn, and Ge are the most studied group IVA elements for perovskites. These group IVA cations share the same number of valence electrons and similarly exhibit the beneficial antibonding properties of lone-pair electrons when incorporated in the perovskite structure. Meanwhile, mixing these cations in all-inorganic perovskites provides opportunities for stabilizing the photoactive phase and tailoring the bandgap structure. In this mini-review, we analyze the structural and bandgap design principles for all-inorganic perovskites featuring mixed group IVA cations, discuss the updated progress in the corresponding PSCs, and finally provide perspectives on future research efforts faciliating the continued development of high-performance Pb-less and Pb-free all-inorganic PSCs.

Graphical abstract: All-inorganic perovskite solar cells featuring mixed group IVA cations

Article information

Article type
Minireview
Submitted
09 1 2023
Accepted
19 2 2023
First published
05 4 2023
This article is Open Access
Creative Commons BY-NC license

Nanoscale, 2023,15, 7249-7260

All-inorganic perovskite solar cells featuring mixed group IVA cations

Y. Li, C. Yang, W. Guo, T. Duan, Z. Zhou and Y. Zhou, Nanoscale, 2023, 15, 7249 DOI: 10.1039/D3NR00133D

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