Spacer Cations Dictate Photoinduced Phase Segregation\nin 2D Mixed Halide Perovskites

PreethiS. Mathew (10974562); Jeffrey T. DuBose (8200692); Junsang Cho (3048825); Prashant V. Kamat (1271493)

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Spacer Cations Dictate Photoinduced Phase Segregation\nin 2D Mixed Halide Perovskites

PreethiS. Mathew (10974562)Jeffrey T. DuBose (8200692)Junsang Cho (3048825)Prashant V. Kamat (1271493)

Year: 2021 Journal: OPAL (Open@LaTrobe) (La Trobe University) Publisher: La Trobe University

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Abstract

The\nspacer cation in two-dimensional (2D) Ruddlesden–Popper\nlead halide perovskites dictates photoinduced phase segregation. Halide\nion segregation under steady-state irradiation of single-layer (<i>n</i> = 1) 2D perovskites is seen when butylammonium (BA) is\nused as the spacer cation, whereas it is essentially absent when BA\nis replaced with phenethylammonium (PEA).

Keywords:

Halide Phase (matter) Perovskite (structure) Irradiation Inorganic compound

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Perovskite Materials and Applications

Physical Sciences → Engineering → Electrical and Electronic Engineering

2D Materials and Applications

Physical Sciences → Materials Science → Materials Chemistry

Strong Light-Matter Interactions

Physical Sciences → Physics and Astronomy → Atomic and Molecular Physics, and Optics

Spacer Cations Dictate Photoinduced Phase Segregation\nin 2D Mixed Halide Perovskites

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