A Universal Strategy to Enhance Circularly Polarized Luminescence Brightness in Chiral Perovskites DOI
Zhengwei Yang,

Haolin Lu,

Yu Zhang

et al.

Laser & Photonics Review, Journal Year: 2024, Volume and Issue: 18(10)

Published: May 23, 2024

Abstract Chiral perovskites are considered as promising candidates for circularly polarized luminescence (CPL) light source, by attracting the broader scientific community their applications in chiral optoelectronics and spintronics. However, it is still a great challenge to achieve both substantial photoluminescence asymmetry ( g CPL ) high quantum yield (PLQY) simultaneously brightness due limitations associated with magnetic transition dipole moments. Herein, this problem overcome large of 1.6×10 −2 PLQY 56% perovskite through element doping strategy. The substitution Pb 2+ ion smaller Mn ions shrinks crystal lattice around [MnBr 6 ] 4− octahedra, amplifying asymmetric distortion surrounding ions. Moreover, can harvest photoexcitation energy perovskites, its spin‐flipping characteristics enable highly efficient from d–d on levels. Furthermore, strategy proven be universal tactic enhancing confirmed series 1D‐ or 2D‐chiral various ligands halogens. findings provide an in‐depth understanding structure‐property relationship toward optoelectronic spintronic applications.

Language: Английский

Considerable Piezochromism in All‐Inorganic Zero‐Dimensional Perovskite Nanocrystals via Pressure‐Modulated Self‐Trapped Exciton Emission DOI
Zhiwei Ma, Songrui Yang, Yue Shi

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(31)

Published: April 18, 2024

Piezochromic materials refer to a class of matters that alter their photoluminescence (PL) colors in response the external stimuli, which exhibit promising smart applications anti-counterfeiting, optoelectronic memory and pressure-sensing. However, so far, most reported piezochromic have been confined organic or hybrid containing moieties with limited range less than 100 nm visible region. Here, we achieved an intriguing piezochromism all-inorganic zero-dimensional (0D) Cs

Language: Английский

Citations

9
Reversible Local Protonation‐Deprotonation: Tuning Stimuli‐Responsive Circularly Polarized Luminescence in Chiral Hybrid Zinc Halides for Anti‐Counterfeiting and Encryption DOI
Danyang Liu, Liangbin Xiong, Xi‐Yan Dong

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(46)

Published: Aug. 13, 2024

Abstract Precise control over the organic composition is crucial for tailoring distinctive structures and properties of hybrid metal halides. However, this approach seldom utilized to develop materials that exhibit stimuli‐responsive circularly polarized luminescence (CPL). Herein, we present synthesis characterization enantiomeric zinc bromides: biprotonated (( R/S )‐C 12 H 16 N 2 )ZnBr 4 ‐LH2)ZnBr ) monoprotonated 15 ZnBr ‐LH1) ), derived from chiral amine ( )‐2,3,4,9‐Tetrahydro‐1H‐carbazol‐3‐amine 14 ). These compounds showcase luminescent properties; zero‐dimensional form emits green light at 505 nm, while form, with a pseudo‐layered structure, displays red 599 649 nm. Remarkably, reversible local protonation‐deprotonation behavior cations allows exposure polar solvents heating induce structural transformations between two forms. Theoretical calculations reveal lower energy barrier associated deprotonation process within pyrrole ring responsible observed. enantiomorphic bromides also switchable circular dichroism (CD) CPL properties. Furthermore, their chloride counterparts were successfully obtained by adjusting halogen ions. Importantly, unique characteristics position these halides as promising candidates applications in information storage, anti‐counterfeiting, encryption.

Language: Английский

Citations

9
Component/Stimulus‐Dependent Multi‐Exciton Emission in Zr(IV)‐Based Organic Metal Halides Triggered by Supramolecular Assembly and Antimony Doping DOI Open Access
Hui Peng, Wei Tian, Qilin Wei

et al.

Laser & Photonics Review, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 30, 2025

Abstract Recently, Sb 3+ ‐activated 0D Zr(IV)‐based metal halides have gained enormous attention for their unique optical properties. However, realizing efficient white emission and multiple reversible emissions in a single system remains great challenge. Parallelly, the currently reported organic are mainly through aimless regulation of type A‐site cations, severely limiting development. Herein, all‐inorganic Cs 2 ZrCl 6 :Sb is employed as conformational model, three different compounds ‐doped [18‐crown‐6@A] (A = K, Rb, Cs) developed via supramolecular assembly. All show tunable with luminous efficiency 91.28% [18‐crown‐6@K] , 84.84% [18‐crown‐6@Rb] 78.63% [18‐crown‐6@Cs] which shall stem from ‐induced multi‐exciton [SbCl ] 3− octahedron. Particularly, strong interaction can enhance structural rigidity suppress nonradiative transitions, dominated reason exhibits emission. The component/excitation/temperature/moisture‐dependent PL switching characteristics observed allows to demonstrate applications advanced anti‐counterfeiting information encryption. Moreover, single‐component light‐emitting diode also fabricated, shows high color rendering index 96.1. Therefore, work provides feasible scheme designing Zr(IV) fascinating

Language: Английский

Citations

1
Accommodative Organoammonium Cations in A‐Sites of Sb─In Halide Perovskite Derivatives for Tailoring BroadBand Photoluminescence with X‐Ray Scintillation and White‐Light Emission DOI
Hanlin Huang,

Yalin Yang,

Shuoyan Qiao

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(8)

Published: Nov. 8, 2023

Abstract Broadband emissive perovskites are next‐generation materials for solid‐state lighting and radiative detection. However, white‐emitting generally synthesized by regulating B/X sites, while not enough attention is paid to the A‐site, which thought hardly affect band‐edge structures optoelectronic properties. Here, a series of Sb 3+ ‐doped In‐based 0D halide perovskite derivatives described with various organoammonium cations in A‐sites. Warm‐white light emitting across visible spectrum (450–850 nm), large Stokes shifts, high photoluminescence quantum yields easily tunable molecularly tailoring A‐site cations. These features enable yield up 60976 Photons/MeV as X‐ray scintillator, detection limit 90 nGy air /s that ≈60 times lower than medical requirement. It proved plays critical role determining degree distortion polyhedra, influences broadband self‐trapped exciton (STE) dominates emission process. Moreover, first time, via incorporation 2,6‐dimethylpiperazine, mixed strategy produces standard white‐light emission, originates from blue‐light yellow‐light related STE centers. foreseen this highlights expanded importance rethinking A‐sites perovskites.

Language: Английский

Citations

22
In situ recrystallization of zero-dimensional hybrid metal halide glass-ceramics toward improved scintillation performance DOI Creative Commons
Bohan Li, Jiance Jin,

Meijuan Yin

et al.

Chemical Science, Journal Year: 2023, Volume and Issue: 14(43), P. 12238 - 12245

Published: Jan. 1, 2023

We have developed high-performance glass-ceramic scintillators via in situ recrystallization from zero-dimensional hybrid metal halide glass counterparts composed of distinct organic cations and inorganic anions.

Language: Английский

Citations

21
Crystal-glass phase transition enabling reversible fluorescence switching in zero-dimensional antimony halides DOI

Meijuan Yin,

Bohan Li,

Zishuo Yi

et al.

Chemical Communications, Journal Year: 2023, Volume and Issue: 59(76), P. 11361 - 11364

Published: Jan. 1, 2023

Crystal-glass phase transition in luminescent metal halides provides unique opportunities to tune the photoluminescence. Here we report four zero-dimensional Sb-based halide glasses featuring reversible upon heating and acetone triggering conditions, along with modulated luminescence properties. Benefiting from fluorescence switching, information encryption anti-counterfeiting applications are achieved.

Language: Английский

Citations

15
Polymeric Metal Halides with Bright Luminescence and Versatile Processability DOI
S. Li, Pengfei Cheng, Huaxin Liu

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(8)

Published: Jan. 5, 2024

Abstract Most of current metal halide materials, including all inorganic and organic–inorganic hybrids, are crystalline materials with poor workability plasticity that limit their application scope. Here, we develop a novel class termed polymeric halides (PMHs) through introducing polycations into antimony‐based as A‐site cations. A series PMHs orange‐yellow broadband emission large Stokes shift originating from self‐trapped excitons successfully prepared, which meanwhile exhibit the excellent processability formability polymers. The versatility these is manifested broad choices polycations, ready extension to manganese‐ copper‐based halides, tolerance molar ratios between in formation PMHs. merger polymer chemistry thus provides generic platform for development functional materials.

Language: Английский

Citations

5
Pressure-triggered intense natural white emission via controllable distortions of antimony chloride dimers DOI Creative Commons

Zhaojiang You,

Bin Xu,

Xinmiao Meng

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 493, P. 151597 - 151597

Published: April 23, 2024

Zero-dimensional (0D) hybrid metal halides (HMHs), featured with unique self-trapped exciton (STE) emissions, are emerging photoluminescence (PL) materials for photoelectronic applications. Compared metal-halogen monomers, dimeric units in 0D HMHs possess more structural flexibility and less spatial confinement of excitons, creating new opportunities PL engineering. Herein, high pressure is employed on (C3H12N2)2Sb2Cl10 to controllably distort inter- intra-octahedral structures within [Sb2Cl10]4− dimers. Intense natural white emission achieved dramatically increased quantum yield from than ≈1% 74.2 %. The high-pressure proven originate the STE recombination triplet states varied equilibrium, as well promoted excitonic trapping restrained nonradiative recombination. This work offers valuable insights into structure effects transition mechanisms dimers, which crucial developing novel illumination.

Language: Английский

Citations

5
All-Atom Photoinduced Charge Transfer Dynamics in Condensed Phase via Multistate Nonlinear-Response Instantaneous Marcus Theory DOI Creative Commons
Zengkui Liu, Zailing Song, Xiang Sun

et al.

Journal of Chemical Theory and Computation, Journal Year: 2024, Volume and Issue: 20(9), P. 3993 - 4006

Published: April 24, 2024

Photoinduced charge transfer (CT) in the condensed phase is an essential component solar energy conversion, but it challenging to simulate such a process on all-atom level. The traditional Marcus theory has been utilized for obtaining CT rate constants between pairs of electronic states cannot account nonequilibrium effects due initial nuclear preparation. recently proposed instantaneous (IMT) and its nonlinear-response formulation allow incorporating relaxation transition two after photoexcitation from equilibrium ground state provide time-dependent coefficient. In this work, we extend IMT method treating photoinduced among general multiple demonstrate organic photovoltaic carotenoid–porphyrin–fullerene triad dissolved explicit tetrahydrofuran solvent. All-atom molecular dynamics simulations were employed obtain time correlation functions gaps, which used generate IMT-required averages variances relevant gaps. Our calculations show that multistate could capture significant preparation, corroborated by substantial differences population predicted theory, where underestimates transfer. also shown have better agreement with nonadiabatic mapping than does. Because straightforward cost-effective implementation accounts effects, believe offers practical strategy studying complex condensed-phase systems.

Language: Английский

Citations

5
Antimony doping towards fast digital encryption and decryption and high-efficiency WLED in zero-dimensional hybrid indium chlorides DOI
Lulu Jiang, Ling-Kun Wu,

Haiyan Sun

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 494, P. 153060 - 153060

Published: June 12, 2024

Language: Английский

Citations

5