Turn‐on Circularly Polarized Luminescence in Chiral Indium Chlorides by 5s2 Metal Centers DOI Creative Commons
Zhiyu Wang, Xiaoming Wang, Zhongwei Chen

et al.

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 62(17)

Published: Dec. 17, 2022

Introducing chirality into the metal-halide hybrids has enabled many emerging properties including chiroptical activity, spin-dependent transport, and ferroelectricity. However, most of chiral to date are non-emissive, underlying mechanism remains elusive. Here, we show a new strategy turn on circularly polarized luminescence (CPL) in hybrids. We demonstrate that alloying Sb3+ indium-chloride dramatically increases photoluminescence quantum yield two series indium-antimony chlorides. These materials exhibit strong CPL signals with tunable energy high dissymmetry factor up 1.5×10-2 . Mechanistic studies reveal emission originates from self-trapped excitons centered 5s2 Moreover, near-ultraviolet pumped white light is demonstrated polarization 6.0 %. Our work demonstrates strategies towards highly luminescent

Language: Английский

Self-assembly of chiroptical ionic co-crystals from silver nanoclusters and organic macrocycles DOI
Yingwei Li, Grant J. Stec, Hong Ki Kim

et al.

Nature Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 8, 2025

Language: Английский

Citations

1
Efficient Spin‐Light‐Emitting Diodes With Tunable Red to Near‐Infrared Emission at Room Temperature DOI Creative Commons
Jingwen Yao, Yuling Huang, Haifeng Sun

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

Abstract Spin light‐emitting diodes (spin‐LEDs) are important for spin‐based electronic circuits as they convert the carrier spin information to optical polarization. Recently, chiral‐induced selectivity (CISS) has emerged a new paradigm enable spin‐LED it does not require any magnetic components and operates at room temperature. However, CISS‐enabled with tunable wavelengths ranging from red near‐infrared (NIR) yet be demonstrated. Here, chiral quasi‐2D perovskites developed fabricate efficient spin‐LEDs NIR region by tuning halide composition. The optimized perovskite films exhibit circularly polarized luminescence 675 788 nm, photoluminescence quantum yield (PLQY) exceeding 86% dissymmetry factor ( g lum ) 8.5 × 10 −3 2.6 −2 . More importantly, direct electroluminescence (CPEL) is achieved temperature in spin‐LEDs. This work demonstrated highest external efficiency (EQE) reaching 12.4% (EL) factors EL 3.7 1.48 composition‐dependent CPEL performance further attributed prolonged lifetime revealed ultrafast transient absorption spectroscopy.

Language: Английский

Citations

1
High‐Performance Sky‐Blue Perovskite Spin‐Light Emitting Diodes Due to Chiral Ionic Liquid Implantation and Passivation DOI Open Access
Guoshuai Zhang, Jun Tang, Yang Li

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Abstract In chiral hybrid perovskites (CHPs), the generation of polarized spin current and manipulation exciton recombination are expected to produce circularly electroluminescence (CP‐EL) through chiral‐induced selectivity (CISS). It opens a new avenue for developing single junction light‐emitting diodes (spin‐LEDs). The recent challenge lies primarily in balancing device performance CP‐EL polarization. Beyond this, blue spin‐LEDs have not been fully realized. lacks studies interior spin‐chiroptical properties. Herein, promising chirality transfer methodology is initiated fabricating sky‐blue (≈491 nm) using synthesized ionic liquids (CILs). They on one side yield material passivation, giving rise chiroptical (EL) An optimal external quantum efficiency (EQE) 13.0% with dissymmetry factor 0.158 obtained. Importantly, this method leads elevation orbit coupling (CISOC) strength up 0.9717 eV A, long decay lifetime over 1 ns A large approximately 75% achieved ambient conditions. This work unlocks spin‐LEDs, further construction spin‐chiroptics relationship.

Language: Английский

Citations

1
A chiral lead-free tin(IV)-based halide organic-inorganic semiconductor with dielectric switching and phase transition DOI
Hang Peng, Qin Liu, Yuhua Liu

et al.

Chinese Chemical Letters, Journal Year: 2022, Volume and Issue: 34(8), P. 107980 - 107980

Published: Nov. 4, 2022

Language: Английский

Citations

37
Turn‐on Circularly Polarized Luminescence in Chiral Indium Chlorides by 5s2 Metal Centers DOI Creative Commons
Zhiyu Wang, Xiaoming Wang, Zhongwei Chen

et al.

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 62(17)

Published: Dec. 17, 2022

Introducing chirality into the metal-halide hybrids has enabled many emerging properties including chiroptical activity, spin-dependent transport, and ferroelectricity. However, most of chiral to date are non-emissive, underlying mechanism remains elusive. Here, we show a new strategy turn on circularly polarized luminescence (CPL) in hybrids. We demonstrate that alloying Sb3+ indium-chloride dramatically increases photoluminescence quantum yield two series indium-antimony chlorides. These materials exhibit strong CPL signals with tunable energy high dissymmetry factor up 1.5×10-2 . Mechanistic studies reveal emission originates from self-trapped excitons centered 5s2 Moreover, near-ultraviolet pumped white light is demonstrated polarization 6.0 %. Our work demonstrates strategies towards highly luminescent

Language: Английский

Citations

30