Highly tunable properties in pressure-treated two-dimensional Dion–Jacobson perovskites
Author ORCID Identifier
Vibhor Kumar:https://orcid.org/0000-0003-3186-6635
Publication Title
Proceedings of the National Academy of Sciences of the United States of America
ISSN
00278424
E-ISSN
10916490
Document Type
Article
Abstract
The application of pressure can achieve novel structures and exotic phenomena in condensed matters. However, such pressure-induced transformations are generally reversible and useless for engineering materials for ambient-environment applications. Here, we report comprehensive high-pressure investigations on a series of Dion–Jacobson (D-J) perovskites A′An-1PbnI3n+1 [A′ = 3-(aminomethyl) piperidinium (3AMP), A = methylammonium (MA), n = 1, 2, 4]. Our study demonstrates their irreversible behavior, which suggests pressure/strain engineering could viably improve light-absorber material not only in situ but also ex situ, thus potentially fostering the development of optoelectronic and electroluminescent materials. We discovered that the photoluminescence (PL) intensities are remarkably enhanced by one order of magnitude at mild pressures. Also, higher pressure significantly changes the lattices, boundary conditions of electronic wave functions, and possibly leads to semiconductor–metal transitions. For (3AMP)(MA)3Pb4I13, permanent recrystallization from 2D to three-dimensional (3D) structure occurs upon decompression, with dramatic changes in optical properties.
First Page
16121
Last Page
16126
Publication Date
7-14-2020
DOI
10.1073/pnas.2003561117
PubMed ID
32601216
Keywords
Bandgap, Dion–Jacobson perovskites, High pressure, Photoluminescence, Two-dimensional
Recommended Citation
Kong, Lingping; Liu, Gang; Gong, Jue; Mao, Lingling; Chen, Mengting; Hu, Qingyang; Lü, Xujie; Yang, Wenge; Kanatzidis, Mercouri G.; and Mao, Ho Kwang, "Highly tunable properties in pressure-treated two-dimensional Dion–Jacobson perovskites" (2020). NIU Bibliography. 612.
https://huskiecommons.lib.niu.edu/niubib/612
Department
Department of Chemistry and Biochemistry