Large in-plane anisotropic 2D perovskites toward highly linear polarized light responses

Abstract

Intrinsic polarization-sensitive materials have taken booming status in light polarization detection for the merits of direct detection, easy miniaturization, and low manufacturing cost. The promising optoelectronic properties and favorable structure...

A polar two-dimensional lead-free hybrid perovskite for self-powered polarization-sensitive photodetection

“…6e summarizes the performance of the reported perovskite and lead-based perovskite polarization-sensitive single crystal detectors. 17,23,42–47 The ω value of (4BrPEA) 3 BiI 6 exceeds that of many lead-free perovskites and is even comparable to Pb-based perovskites.…”

Coupled Kite-to-Square Distortion Transition and Physical Properties in 2D Lead Halide Perovskite

“…When unpolarized light interacts with certain materials or passes through certain filters, its electric field vibrations align predominantly in one direction, resulting in linear polarization. 2D materials with an in-plane anisotropic nature always have an LPL response. − 2D layered perovskites exhibit distinct anisotropic features in both the in-plane and out-of-plane directions due to their inherent quantum well structure, making them promising candidates for LPL response. − Two LPL detection mechanisms based on out-of-plane structural anisotropy (Figure a) and in-plane polarization (Figure b) are identified. In the former, maximum photocurrent occurs when the polarization plane aligns parallel to the 2D inorganic layer, while perpendicular alignment results in a minimum photocurrent.…”

The role of halogens in structural diversity and chirality enhancement of 1D chiral hybrid metal halides

“…[11][12][13][14][15][16] Chiral hybrid metal halides (CHMHs) have the advantages of both chiral materials and hybrid metal halides by combining chiral organic cations with metal halides. [17][18][19][20] Various CHMHs have been synthesized and their chirality-related properties have been studied to realize the potential applications in biomedicine, optics, [21][22][23] chemistry, 24 and electronics 15,25,26 since the chiroptical properties of (R/S-MBA) 2 PbI 4 (MBA = methylbenzylammonium) were first investigated in 2017. 27 Low-dimensional HMHs exhibit special electronic structures and photoelectric properties.…”