Pressure‐Induced Unusual Transition of Luminescence Mechanics from Self‐Trapped Exciton to Free Exciton Emission in Lead Bromide Perovskitoids DOI
Rong Yan, Lingrui Wang, Yongheng Wang

et al.

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 29, 2024

Abstract Understanding the luminescence mechanics of metal halide perovskites is key to uncovering detailed pathways responsible for remarkable photophysical properties and engineering materials with enhanced optoelectronic properties. In this work, high pressure employed reveal self‐trapped exciton (STE) emission features a 1D lead bromide perovskitoid (HM)Pb 2 Br 6 . Upon compression, 42‐fold enhancement in intensity compared initial emission, along transfer from STE narrow free achieved These phenomena are related anisotropic compression , which results structural stiffness significant reduction distances Pb─Pb bond lengths between inter‐[Pb ] 2− chains, as well Pb─Br within three basic intra‐[Pb octahedra. provide essential insights into intriguing photophysics STEs shed new light on dramatic control enhance optical perovskites.

Language: Английский

Near‐infrared emitting metal halide materials: Luminescence design and applications DOI Creative Commons
Dongjie� Liu, Peipei Dang,

Guodong Zhang

et al.

InfoMat, Journal Year: 2024, Volume and Issue: 6(5)

Published: March 28, 2024

Abstract Near‐infrared (NIR) luminescent metal halide (LMH) materials have attracted great attention in various optoelectronic applications due to their low‐temperature solution‐processable synthesis, abundant crystallographic/electronic structures, and unique properties. However, some challenges still remain luminescence design, performance improvement, application assignments. This review systematically summarizes the development of NIR LMHs through classifying origins into four major categories: band‐edge emission, self‐trapped exciton (STE) ion defect‐related emission. The mechanisms different types are discussed detail by analyzing typical examples. Reasonable strategies for designing optimizing luminescence/optoelectronic properties summarized, including bandgap engineering, self‐trapping state chemical composition modification, energy transfer, other auxiliary such as improvement synthesis scheme post‐processing. Furthermore, prospects based on devices revealed, phosphor‐converted light‐emitting diodes (LEDs), electroluminescent LEDs, photodetectors, solar cells, x‐ray scintillators, well demonstrations related practical applications. Finally, existing future perspectives LMH critically proposed. aims provide general understanding guidance design high‐performance materials. image

Language: Английский

Citations

20
Unlocking the Potential of Organic‐Inorganic Hybrid Manganese Halides for Advanced Optoelectronic Applications DOI Open Access
Wei Zhang, Wei Zheng, Lingyun Li

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 5, 2024

Organic-inorganic hybrid manganese(II) halides (OIMnHs) have garnered tremendous interest across a wide array of research fields owing to their outstanding optical properties, abundant structural diversity, low-cost solution processibility, and low toxicity, which make them extremely suitable for use as new class luminescent materials various optoelectronic applications. Over the past years, plethora OIMnHs with different dimensionalities multifunctionalities such efficient photoluminescence (PL), radioluminescence, circularly polarized luminescence, mechanoluminescence been newly created by judicious screening organic cations inorganic Mn(II) polyhedra. Specifically, through precise molecular engineering, series near-unity PL quantum yields, high anti-thermal quenching excellent stability in harsh conditions devised explored applications light-emitting diodes (LEDs), X-ray scintillators, multimodal anti-counterfeiting, fluorescent sensing. In this review, latest advancements development are summarized, covers from fundamental physicochemical properties advanced applications, an emphasis on functionality design especially LEDs detection imaging. Current challenges future efforts unlock potentials these promising also envisioned.

Language: Английский

Citations

18
Dual-Template-Directed Zero-Dimensional Bismuth Chlorides: Structures, Luminescence, Photoinduced Chromism, and Enhanced Proton Conductivity DOI
Yukun Yang, Xueyun Geng,

Tong Liu

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(40), P. 18865 - 18876

Published: Sept. 20, 2024

Zero-dimensional (0D) hybrid organic-inorganic bismuth halides have attracted immense scientific interest as promising candidates for lead-free materials. Here, by using a typical solvothermal method, two mixed-cation-phase 0D chlorides of [HPDA][H

Language: Английский

Citations

11
Organic hybrid tetranuclear clusteroluminogens: Blue-light-excitable LED with ultrahigh luminous efficacy DOI
Yang‐Peng Lin,

Xuexia Lu,

Zhizhuan Zhang

et al.

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 479, P. 147523 - 147523

Published: Nov. 20, 2023

Language: Английский

Citations

16
Exciton-harvesting enabled efficient charged particle detection in zero-dimensional halides DOI Creative Commons
Qian Wang, C. Wang, Hongliang Shi

et al.

Light Science & Applications, Journal Year: 2024, Volume and Issue: 13(1)

Published: Aug. 14, 2024

Abstract Materials for radiation detection are critically important and urgently demanded in diverse fields, starting from fundamental scientific research to medical diagnostics, homeland security, environmental monitoring. Low-dimensional halides (LDHs) exhibiting efficient self-trapped exciton (STE) emission with high photoluminescence quantum yield (PLQY) have recently shown a great potential as scintillators. However, an overlooked issue of exciton-exciton interaction LDHs under ionizing hinders the broadening its applications. Here, we demonstrate exceptional enhancement exciton-harvesting efficiency zero-dimensional (0D) Cs 3 Cu 2 I 5 :Tl halide single crystals by forming strongly localized Tl-bound excitons. Because suppression non-radiative interaction, excellent α/β pulse-shape-discrimination (PSD) figure-of-merit (FoM) factor 2.64, superior rejection ratio 10 −9 , scintillation 26 000 photons MeV −1 5.49 α-ray achieved crystals, outperforming commercial ZnS:Ag/PVT composites charged particle Furthermore, detector prototype based on crystal demonstrates capability identifying radioactive 220 Rn gas monitoring We believe that strategy proposed here can greatly boost applications materials.

Language: Английский

Citations

6
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
Designing guanidine-based lead-free hybrid indium perovskites with highly efficient intrinsic broadband emissions DOI

Chunqing Hou,

Xiaoting Liu, Zisheng Wang

et al.

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(20), P. 7426 - 7434

Published: Jan. 1, 2024

Recent advances in luminescent materials have highlighted zero-dimensional (0D) hybrid metal halides as highly efficient candidates.

Language: Английский

Citations

4
Structural transformation in isomeric 0D copper(i) iodide hybrids and their utilization as water-stable luminophores for furaltadone detection DOI
Lin Yang,

Chunyang Shi,

Bohan Li

et al.

Inorganic Chemistry Frontiers, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Two hybrid copper halide isomers, 4-BrBTP(Cu 2 I 4 ) 0.5 (1-α and 1-β), are explored, showing switchable luminescence via isomeric transformation furaltadone sensitivity.

Language: Английский

Citations

0
Unveiling structural phase transitions and Negative Linear Compressibility of ScF3 under high pressure DOI

Houda El Hyani,

Haris Habib,

D. Tian

et al.

Physica B Condensed Matter, Journal Year: 2025, Volume and Issue: 701, P. 416976 - 416976

Published: Feb. 2, 2025

Language: Английский

Citations

0
Deviatoric stress-induced transition of self-trapped exciton emissions DOI Creative Commons

Chaofan Lv,

Xigui Yang,

Yanran Wu

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Feb. 24, 2025

Self-trapped exciton (STE) emissions, featured by broad spectral band and minimal self-absorption, have garnered considerable attention for advanced lighting imaging applications. However, developing strategies to facilitate multiple STE states, modulate the emission energy extend range remains a great challenge. Here, we introduce deviatoric stress induce another intrinsic state (STE-2) enable transitions between (STE-1) STE-2 in pyramidal ZnO nanocrystals. This approach results remarkable shift energy, from yellow-green (2.34 eV) deep-blue (2.88 eV). Combined in-situ monitoring optical experiments show that originates potential well generated yield deformation of crystals under stress. Spectroscopic dynamical characterizations two emissions reveal transition process carrier's relaxation pathway STE-1, conversely at much higher pressures. These findings demonstrate serves as robust tool modulating provide new insights into evolution carrier dynamics emissions. Deviatoric induces an self-trapped enables states 2.34 eV 2.88 eV.

Language: Английский

Citations

0