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

Organic–Inorganic Hybrid Glasses of Atomically Precise Nanoclusters DOI Creative Commons
Chunwei Dong, Xin Song, Bashir E. Hasanov

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(11), P. 7373 - 7385

Published: March 4, 2024

Organic–inorganic atomically precise nanoclusters provide indispensable building blocks for establishing structure–property links in hybrid condensed matter. However, robust glasses of ligand-protected nanocluster solids have yet to be demonstrated. Herein, we show [Cu4I4(PR3)4] cubane coordinated by phosphine ligands (PR3) form melt-quenched air with reversible crystal–liquid–glass transitions. Protective critically influence the glass formation mechanism, modulating glasses' physical properties. A utilizing ethyldiphenylphosphine-based nanoclusters, [Cu4I4(PPh2Et)4], exhibits superb optical properties, including >90% transmission both visible and near-infrared wavelengths, negligible self-absorption, near-unity quantum yield, high light yield. Experimental theoretical analyses demonstrate structural integrity [Cu4I4(PPh2Et)4] nanocluster, i.e., iodine-bridged tetranuclear cubane, has been fully preserved state. The strong internanocluster CH−π interactions found subsequently reduced vibration account its enhanced luminescence Moreover, this highly transparent enables performant X-ray imaging low-loss waveguiding fibers drawn above transition. discovery "nanocluster glass" opens avenues unraveling mechanisms designing novel luminescent well-defined advanced photonics.

Language: Английский

Citations

34
Multiphase Transformation in Hybrid Copper(I)-Based Halides Enable Improved X-ray Scintillation and Real-Time Imaging DOI
Bohan Li, Jiance Jin, Xia Liu

et al.

ACS Materials Letters, Journal Year: 2024, Volume and Issue: 6(4), P. 1542 - 1548

Published: March 19, 2024

Crystal-glass phase transformation and glass recrystallization in zero-dimensional (0D) hybrid metal halides make them thriving X-ray scintillators with the advantages of large-area fabrication improved performance. Herein, we report three 0D copper(I) composed identical organic cations versatile self-assembly copper-iodide anions find that volumes inorganic groups are related to their lattice energies, which conformationally governed thermodynamics formation through destabilization. A subsequent heating counterparts allows bulk glass-ceramic via recrystallization, exhibiting outstanding scintillation performances (with a light yield 64 000 ph MeV–1 detection limit 72.6 nGy s–1) high stability for real-time imaging (spatial resolution above 20 lp mm–1). This multiphase strategy luminescence halide opens an exploratory way structural design engineering scintillator screens imaging.

Language: Английский

Citations

21
Overcoming Thermal Quenching in X‐ray Scintillators through Multi‐Excited State Switching DOI Creative Commons
Min Wang, Zhongbo Zhang, Jing Lyu

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(18)

Published: March 4, 2024

X-ray scintillators have gained significant attention in medical diagnostics and industrial applications. Despite their widespread utility, scintillator development faces a hurdle when exposed to elevated temperatures, as it usually results reduced scintillation efficiency diminished luminescence output. Here we report molecular design strategy based on hybrid perovskite (TpyBiCl

Language: Английский

Citations

20
The effect of solvent on the formation of low-dimensional metal halides and their self-trapped exciton emission DOI Creative Commons
Xiaochen Wang, Tianxin Bai, Jinglu Sun

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 486, P. 150257 - 150257

Published: March 8, 2024

Low-dimensional organic–inorganic hybrid metal halides, with broadband luminescence, have attracted much attention for optoelectronic applications due to their rich in structural diversity and solution processibility. However, it is still unclear about how the solvent molecules influence properties of processed low-dimensional halides. Here, we prepared five different antimony-based crystal structures, [SbCl6]3- as halide octahedron 4, 4-difluoropiperidine (DFPD+) organic cation, by using solvents: hydrochloric acid (HCl) aqueous four solvents (dimethylformamide (DMF), methanol (MeOH), acetonitrile (ACN) dimethylacetamide (DMAC)). We revealed relation between structures optical properties, found participation structure causes significant lattice distortions, which beneficial achieving self-trapped exciton (STE) emission. Among them, (DFPD)6SbCl9·2DMAC exhibits a remarkable photoluminescence (PL) quantum yield approximately 90 %. The STE dynamics were characterized femtosecond transient absorption time-resolved PL spectroscopies. Simultaneously, this study also provides new directions expanding application luminescent halides: addition UV-LEDs, efficient rapid detection or can be achieved raw materials, while realizing potential multi-level anti-counterfeiting.

Language: Английский

Citations

20
Emerging 0D Hybrid Metal Halide Luminescent Glasses DOI
Bohan Li,

Yuzhen Wang,

Yan Xu

et al.

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

Published: Jan. 2, 2025

0D hybrid metal halide (HMH) luminescent glasses have garnered significant attentions for its chemical diversity in optoelectronic applications and it also retains the skeleton connectivity coordination mode of crystalline counterparts while exhibiting various physics/chemistry characteristics distinct from states. However, understanding glass-forming ability specific structural origins underpinning properties HMH remains elusive. In this review, is started solid-liquid phase transition thermodynamic analysis HMHs formed through melt-quenching, summarize current compounds capable stably forming glassy phases via design. The characterization methods are further discussed highlight exceptional transparency, properties, glass crystallization behaviors. Moreover, application prospects demonstrated by these been presented accordingly X-ray detection imaging, anti-counterfeiting, information encryption. Finally, perspective offered into future development emerging family their applications.

Language: Английский

Citations

2
Guanidinium‐Based Manganese(II) Bromide with High Glass‐Forming Ability for Thermoplastic Curved X‐ray Imaging DOI

Zi‐Lin He,

Jun‐Hua Wei,

Jianbin Luo

et al.

Laser & Photonics Review, Journal Year: 2024, Volume and Issue: 18(7)

Published: Feb. 25, 2024

Abstract The development of large‐area transparent organic‐inorganic hybrid metal halide (OIMH) scintillation screens is restricted by the anisotropic single‐crystal growth, numerous grain boundaries in polycrystalline wafers, and inhomogeneous dispersion perovskite‐polymer composite films. crystal‐glass phase transition OIMH materials may provide a promising solution for above significant challenges. Herein, new class amorphous guanidinium‐based manganese bromide glasses, (DPG) 2 MnBr 4 (DOTG) (DPG = 1,3‐diphenylguanidinium, DOTG 1,3‐di‐o‐tolylguanidinium), are synthesized through low‐temperature melt‐quenching process. shows impressive glass‐forming ability because large viscosity ( η ) at melting temperature T m 3426 mPa·s) small fragility index 52.35), which can be potential glass scintillator. (e.g., 13 cm × cm) scintillator high light transmittance > 80%, low detection limit 237.3 nGy s −1 X‐ray imaging spatial resolution 12 lp mm . Interestingly, < 40 °C gives unique thermoplastic properties, allowing it to conform irregularly shaped objects reduce distortion imaging.

Language: Английский

Citations

14
Shape-on-demand synthesis of luminescent (ETP)2MnBr4 glass scintillator DOI
Xiaojia Wang,

Xiangzhou Zhang,

Yeqi Liu

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 483, P. 149239 - 149239

Published: Feb. 2, 2024

Language: Английский

Citations

13
A Luminescent Hybrid Bimetallic Halide Family with Solvent‐Coordinated Rare Earth and Alkaline Earth Metals DOI
Jiawei Lin, Pan Wang,

Jiaqian Zhou

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(29)

Published: May 6, 2024

Abstract Hybrid metal halides are an extraordinary class of optoelectronic materials with extensive applications. To further diversify and study the in‐depth structure‐property relations, we report here a new family 21 zero‐dimensional hybrid bimetallic chlorides general formula A ( L ) n [ B Cl m ] =rare earth RE ), alkaline metals Mn; =solvent ligand; =Sb, Bi Te). The (DMSO) 8 6 =La, Ce, Sm, Eu, Tb, Dy; DMSO=dimethyl sulfoxide) series shows broadband emission attributed to triplet radiative recombination from Sb Bi, incorporating characteristic metals, where Eu(DMSO) [BiCl staggering PL quantum yield 94 %. pseudo‐octahedral [SbCl 5 vacancy in II =Mg, Ca Mn) square pyramidal (TMSO) (TMSO=tetramethylene enhance stereoactive expression s 2 lone pairs 3+ , giving rise observation dual‐band singlet emission, respectively. Te(IV) analogues have been characterized, showing blue‐light‐excitable single‐band emission. This work expands space for emphasis on harnessing elements, provides important insights into designing emitters regulating their properties.

Language: Английский

Citations

13
Multi-stimuli-responsive luminescence enabled by crown ether anchored chiral antimony halide phosphors DOI Creative Commons
Xiao Han,

Puxin Cheng,

Shanshan Han

et al.

Chemical Science, Journal Year: 2024, Volume and Issue: 15(10), P. 3530 - 3538

Published: Jan. 1, 2024

The chirality-dependent lattice distortion assisted by a crown ether leads to an intense STEs emission along with CPL. distinct endows the Sb halides multi-stimuli-responsive PL behaviours towards excitation wavelength and temperature.

Language: Английский

Citations

11
Luminescence regulation of Sb<sup>3+</sup> in 0D hybrid metal halides by hydrogen bond network for optical anti-counterfeiting DOI Creative Commons
Dehai Liang, Saif M. H. Qaid, Xin Yang

et al.

Opto-Electronic Advances, Journal Year: 2024, Volume and Issue: 7(3), P. 230197 - 230197

Published: Jan. 1, 2024

The Sb3+ doping strategy has been proven to be an effective way regulate the band gap and improve photophysical properties of organic-inorganic hybrid metal halides (OIHMHs). However, emission ions in OIHMHs is primarily confined low energy region, resulting yellow or red emissions. To date, there are few reports about green Sb3+-doped OIHMHs. Here, we present a novel approach for regulating luminescence 0D C10H22N6InCl7·H2O via hydrogen bond network, which water molecules act as agents bonding. shows broadband peaking at 540 nm high photoluminescence quantum yield (PLQY) 80%. It found that intense stems from radiative recombination self-trapped excitons (STEs). Upon removal with heat, C10H22N6In1-xSbxCl7 generates emission, attributed breaking network large structural distortions excited state. Once adsorbed by C10H22N6In1-xSbxCl7, it can subsequently emit light. This water-induced reversible switching successfully used optical security information encryption. Our findings expand understanding how local coordination structure influences mechanism provide method control STEs emission.

Language: Английский

Citations

9