Issue 51, 2023

Lead-free organic–inorganic azetidinium alternating metal cation bromide: [(CH2)3NH2]2AgBiBr6, a perovskite-related absorber

Abstract

In the last decade, organic–inorganic hybrid halide perovskite materials have developed into a very large research area in photovoltaics and optoelectronics as promising light harvesters. Lead-free double perovskites have recently been investigated as an environmentally friendly alternative to the lead-containing compositions. However, lead-free organic–inorganic hybrid halide double perovskites have so far rarely been produced due to a certain complexity in their synthesis. A number of small molecular cations have been investigated, but compositions containing azetidinium, which is a 4-membered heterocyclic molecular ring, on the A-site have hardly been considered. This study investigates the potential of [(CH2)3NH2]2AgBiBr6 as an optical absorber in photovoltaics or optoelectronics. The use of this alternative cation changes the crystal symmetry significantly. Columns of alternating metal cation form which are separated by the organic ions. While crystal symmetry is rather different from the perovskites, the overall properties as an absorber are similar. It is thus worthwhile to further investigate alternate hybrid compositions which form into other symmetries than the perovskite base structure.

Graphical abstract: Lead-free organic–inorganic azetidinium alternating metal cation bromide: [(CH2)3NH2]2AgBiBr6, a perovskite-related absorber

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Article information

Article type
Paper
Submitted
01 Sep 2023
Accepted
21 Nov 2023
First published
12 Dec 2023
This article is Open Access
Creative Commons BY license

RSC Adv., 2023,13, 36079-36087

Lead-free organic–inorganic azetidinium alternating metal cation bromide: [(CH2)3NH2]2AgBiBr6, a perovskite-related absorber

Y. U. Jin, B. Marler, A. D. Karabanov, K. Winkler, I. C. J. Yap, A. Dubey, L. Spee, M. Escobar Castillo, F. Muckel, A. N. Salak, N. Benson and D. C. Lupascu, RSC Adv., 2023, 13, 36079 DOI: 10.1039/D3RA05966A

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