TY - JOUR
T1 - Highly tunable properties in pressure-treated two-dimensional Dion–Jacobson perovskites
AU - Kong, Lingping
AU - Liu, Gang
AU - Gong, Jue
AU - Mao, Lingling
AU - Chen, Mengting
AU - Hu, Qingyang
AU - Lü, Xujie
AU - Yang, Wenge
AU - Kanatzidis, Mercouri G.
AU - Mao, Ho Kwang
N1 - Funding Information:
ACKNOWLEDGMENTS. G.L. and H.-k.M. acknowledge support from National Natural Science Associate Foundation GrantU1930401. Q.H. is supported by the National Natural Science Foundation of China Grant 17N1051-0213. High-pressure powder structure characterizations were performed at beam-line 15U of the Shanghai Synchrotron Radiation Facility, China, and beam-line 5A of the Pohang Accelerator Laboratory, Korea. High-pressure IR experiments were carried out at beamline 12D-IRS of the Pohang Accelerator Laboratory, Korea, and beamline BL43IR of Spring-8, Japan. We acknowledge Dr. Shuai Yan, Dr. Lili Zhang, Dr. Boknam Chae, Dr. Hyun-hwi Lee, Dr. Taro Moriwaki, Dr. Yuka Ikemoto, and Prof. Hidekazu Okamura for their critical experimental help. At Northwestern University (M.G.K.) this work is mainly supported by the Department of Energy, Office of Science, Basic Energy Sciences, under Grant SC0012541 (sample synthesis, structure determination, and ambient physical property characterization). We appreciate Ms. Freyja O’Toole for her language assistance.
PY - 2020/7/14
Y1 - 2020/7/14
N2 - 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.
AB - 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.
KW - Bandgap
KW - Dion–Jacobson perovskites
KW - High pressure
KW - Photoluminescence
KW - Two-dimensional
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U2 - 10.1073/pnas.2003561117
DO - 10.1073/pnas.2003561117
M3 - Article
C2 - 32601216
AN - SCOPUS:85088177596
VL - 117
SP - 16121
EP - 16126
JO - Proceedings of the National Academy of Sciences of the United States of America
JF - Proceedings of the National Academy of Sciences of the United States of America
SN - 0027-8424
IS - 28
ER -