Highly tunable properties in pressure-treated two-dimensional Dion-Jacobson perovskites.

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'A _n-1Pb _n I_3n+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 t

SUBMITTER: Kong L 

PROVIDER: S-EPMC7368378 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature