Optical generation and electric control of pure spin photocurrent in a ferroelectric Ruddlesden–Popper perovskite (MA)₂Pb(SCN)₂I₂ monolayer

Abstract

In the field of semiconductor spintronics, spin current can replace charge current to perform logic operations, leading to the information processing in spintronic devices with high integration density and low...

[(4AMTP)PbBr2]2PbBr4: a Nontypical Cation-Coordinated Perovskite Showing Deep-Blue Emissions and Blue-Light Photoelectric Response

“…Furthermore, they have more impressive structural diversity than the others due to the limitless combination of various cations and layered structures. Therefore, the 2D MHPs-based materials have become a focus showing versatile physical properties, including PL, − photovoltaics, − and photodetection. − …”

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

“…Due to the different selection rules of BPVE and bulk spin photovoltaic effect (BSPVE), these two currents have different directions (Figure 11a). 68 The pure spin current requires mirror symmetry or inversion-mirror symmetry; hence, it is along the polarization direction. 70 The charge current, on the other hand, is perpendicular to the polarization, namely, parallel to the distortion direction.…”

“…On the other hand, for the CPGE mechanism, which is associated with spin polarization, current collection depends on a specific direction, and single-crystal-based devices are the only choice. The direction is perpendicular to the polarization, as demonstrated by two similar works analyzing this direction from the perspectives of charge current and spin current, as well as spin-polarized band structure splitting. , Upon the CPL illumination with above-bandgap energy, the polar structure generates charge photocurrent ( J C ) and spin photocurrent ( J S ). Due to the different selection rules of BPVE and bulk spin photovoltaic effect (BSPVE), these two currents have different directions (Figure a) .…”

“…Spin and charge photocurrent directions illustrated by ferroelectric monolayer (MA) 2 Pb(SCN) 2 I 2 under L/R-CPL illumination as light propagated along the x axis. [Reproduced from ref . Copyright 2022, Royal Society of Chemistry, London.]…”

Quartz‐Like Structure, Optical Activity, and High Stability in the First Chiral Cation‐Coordinated Perovskite Semiconductor

“…Organic-inorganic metal halide perovskites show great application potential in solar cells, photodetection, luminescence, and spintronics. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] In recent years, low-dimensional broad bandgap perovskites have garnered significant attention for their diverse structures and properties, [16,17] especially the structural chiralitybased properties such as circularly polarized luminescence and circularly polarized light detection. [18][19][20] However, optical properties such as chirality-induced optical rotation and anisotropicinduced birefringence have received little attention due to poor DOI: 10.1002/adom.202300580 crystal quality and limited crystal size, even though the broad bandgap perovskites have excellent light transmittance, which is the prerequisite for optical devices.…”