An Overview for Zero‐Dimensional Broadband Emissive Metal‐Halide Single Crystals DOI
Lei Zhou, Jin‐Feng Liao, Dai‐Bin Kuang

et al.

Advanced Optical Materials, Journal Year: 2021, Volume and Issue: 9(17)

Published: May 31, 2021

Abstract The high‐profile candidacy of low‐dimensional metal‐halide single crystals as promising light emitters originates from the intriguing emission properties (e.g., extremely broad luminescence spectra, large Stokes shift, high color rendition), which have enabled recent great achievements on their application in lighting, artificial illumination, and scintillators. Among family crystals, zero‐dimensional (0D) materials been featured lowest dimensionality, a consequence, strongest quantum confinement, softest lattice, electron–phonon coupling further translated into near‐unity photoluminescence (PL) efficiency with broadband emission. However, far it is known, 0D structures are significantly underexplored. Herein, an overview provided advances focus comprehensive understanding insightful perspectives behind photophysical mechanism. Additionally, challenges future opportunities currently faced by bulk metal halides discussed order to provide roadmap for development novel versatile optical suited practical applications.

Language: Английский

Metal halide perovskites for light-emitting diodes DOI
Xiaoke Liu, Weidong Xu, Sai Bai

et al.

Nature Materials, Journal Year: 2020, Volume and Issue: 20(1), P. 10 - 21

Published: Sept. 14, 2020

Language: Английский

Citations

1176

Recent progress of zero-dimensional luminescent metal halides DOI
Mingze Li, Zhiguo Xia

Chemical Society Reviews, Journal Year: 2021, Volume and Issue: 50(4), P. 2626 - 2662

Published: Jan. 1, 2021

This review provides in-depth insight into the structure–luminescence–application relationship of 0D all-inorganic/organic–inorganic hybrid metal halide luminescent materials.

Language: Английский

Citations

593

Polarons in materials DOI
Cesare Franchini, Michele Reticcioli, Martin Setvín

et al.

Nature Reviews Materials, Journal Year: 2021, Volume and Issue: 6(7), P. 560 - 586

Published: March 19, 2021

Language: Английский

Citations

446

Highly Efficient Blue Emission from Self-Trapped Excitons in Stable Sb3+-Doped Cs2NaInCl6 Double Perovskites DOI
Ruosheng Zeng, Leilei Zhang,

Yang Xue

et al.

The Journal of Physical Chemistry Letters, Journal Year: 2020, Volume and Issue: 11(6), P. 2053 - 2061

Published: Feb. 27, 2020

Highly efficient blue-emitting three-dimensional (3D) lead–free halide perovskites with excellent stability have attracted worldwide attention. Herein, a doping route was adopted to incorporate Sb3+ ions into the Cs2NaInCl6 for decorating electronic band structure. Due moderate electron–phonon coupling, Sb3+-doped double showed narrow and relatively unusual blue emission of self-trapped excitons (STEs). Density functional theory (DFT) calculation indicated that doped could break parity-forbidden transition rule modulate density state (DOS) population effectively boost PLQY STEs drastically. The optimized Sb3+:Cs2NaInCl6 exhibited up 75.89% under consecutive illumination 365 nm UV light 1000 h. This kind highly lead-free may overcome bottlenecks severe toxicity insufficient therefore an extensive application in scarce photonic optoelectronic fields.

Language: Английский

Citations

367

Excitons in Metal‐Halide Perovskites DOI Creative Commons
Michał Baranowski, Paulina Płochocka

Advanced Energy Materials, Journal Year: 2020, Volume and Issue: 10(26)

Published: Feb. 12, 2020

Abstract The unprecedented increase of the power conversion efficiency metal‐halide perovskite solar cells has significantly outpaced understanding their fundamental properties. One biggest puzzles perovskites been exciton binding energy, which proved to be difficult determine experimentally. Many contradictory reports can found in literature with values energy from a few meV tens meV. In this review results last years intense investigation physic materials are summarized. particular critical overview different experimental approaches used is provided. problem context polar nature crystals and related polaron effects have neglected date most work discussed. It shown that reconcile at least some observations controversy present literature. Finally, current status fine structure peculiar carrier–phonon coupling help understand intriguing light emission perovskites.

Language: Английский

Citations

348

Efficient Lone-Pair-Driven Luminescence: Structure–Property Relationships in Emissive 5s2 Metal Halides DOI Creative Commons
Kyle M. McCall, Viktoriia Morad, Bogdan M. Benin

et al.

ACS Materials Letters, Journal Year: 2020, Volume and Issue: 2(9), P. 1218 - 1232

Published: Aug. 4, 2020

Low-dimensional metal halides have been the focus of intense investigations in recent years following success hybrid lead halide perovskites as optoelectronic materials. In particular, light emission low-dimensional based on 5s2 cations Sn2+ and Sb3+ has found utility a variety applications complementary to those three-dimensional because its unusual properties such broadband character highly temperature-dependent lifetime. These derive from exceptional chemistry lone pair, but terminology explanations given for vary widely, hampering efforts build cohesive understanding these materials that would development efficient devices. this Perspective, we provide structural overview with dynamics driven by stereoactivity pair identify features enable strong emission. We unite different theoretical models able explain bright centers into framework, which is then applied array compounds recently developed our group other researchers, demonstrating generating holistic picture field point view chemist. highlight state-of-the-art demonstrate unique capabilities versatile emissive promising future directions halides.

Language: Английский

Citations

294

Sb3+‐Doping in Cesium Zinc Halides Single Crystals Enabling High‐Efficiency Near‐Infrared Emission DOI
Binbin Su, Mingze Li, Enhai Song

et al.

Advanced Functional Materials, Journal Year: 2021, Volume and Issue: 31(40)

Published: July 10, 2021

Abstract Luminescent metal halide materials with flexible crystallography/electronic structures and tunable emission have demonstrated broad application prospects in the visible light region. However, designing near‐infrared (NIR) light‐emitting halides remains a challenge. Here, an enlightening prototype is proposed to explore high‐efficiency broadband NIR systems by incorporating Sb 3+ into Cs 2 ZnCl 4 matrix. Combined experimental analysis density functional theory calculations reveal modified self‐trapped excitons model elaborate emission. The high photoluminescence quantum yield of 69.9% peaking at 745 nm large full width half maximum 175 nm, along excellent air/thermal stability, show unique advantages lead‐free :Sb as source. substitution Cl − Br further enables red‐shift peak from 823 nm. diode device based on demonstrates potential non‐visible source night vision. This study puts forward effective strategy design novel eco‐friendly emissive provides guidance for expanding scope luminescent halides.

Language: Английский

Citations

288

Sb3+ Dopant and Halogen Substitution Triggered Highly Efficient and Tunable Emission in Lead-Free Metal Halide Single Crystals DOI

Yuyu Jing,

Ying Liu, Xingxing Jiang

et al.

Chemistry of Materials, Journal Year: 2020, Volume and Issue: 32(12), P. 5327 - 5334

Published: May 15, 2020

Rational doping and compositional control remain significant challenges in designing luminescent metal halides to achieve highly efficient tunable emission. Here, the air-stable lead-free Cs2InCl5·H2O crystal with a zero-dimensional structure was investigated as pristine compound design new luminescence materials. Sb3+-doping Cs2InCl5·H2O:Sb3+ enabled broadband yellow emission photoluminescence quantum yield up 95.5%. The colors can be expanded into orange-red region by halogen substitution for Cs2InX5·H2O:Sb3+ (X = Cl/Br/I). optical characterizations along theoretical calculations demonstrate that characteristic singlet triplet self-trapped exciton emissions of ns2-metal-halide centers account luminescence. Moreover, admirable stability against air heat pave way its further applications white light-emitting diodes high-resolution fluorescent signs anticounterfeiting technology. Our achievement case Sb3+-doped represents successful strategy developing stable versatile applications.

Language: Английский

Citations

279

0D Perovskites: Unique Properties, Synthesis, and Their Applications DOI
Siqi Sun, Min Lu, Xupeng Gao

et al.

Advanced Science, Journal Year: 2021, Volume and Issue: 8(24)

Published: Oct. 24, 2021

0D perovskites have gained much attention in recent years due to their fascinating properties derived from peculiar structure with isolated metal halide octahedra or clusters. However, the systematic discussion on crystal and electronic of further understand photophysical characteristics comprehensive overview for applications are still lacking. In this review, unique diverse comprehensively analyzed, including large bandgaps, high exciton binding energy, largely Stokes-shifted broadband emissions self-trapped excitons. Furthermore, photoluminescence regulation discussed. Then, various synthetic methods perovskite single crystals, nanocrystals, thin films summarized. Finally, emerging light-emitting diodes, solar cells, detectors, some others illustrated, outlook future research field is also provided.

Language: Английский

Citations

255

Lead‐Free Halide Perovskites for Light Emission: Recent Advances and Perspectives DOI Creative Commons
Xin Li, Xupeng Gao, Xiangtong Zhang

et al.

Advanced Science, Journal Year: 2021, Volume and Issue: 8(4)

Published: Jan. 4, 2021

Abstract Lead‐based halide perovskites have received great attention in light‐emitting applications due to their excellent properties, including high photoluminescence quantum yield (PLQY), tunable emission wavelength, and facile solution preparation. In spite of characteristics, the presence toxic element lead directly obstructs further commercial development. Hence, exploiting lead‐free perovskite materials with superior properties is urgent necessary. this review, deep‐seated reasons that benefit light for perovskites, which help develop performance, are first emphasized. Recent advances (single crystals, thin films, nanocrystals different dimensionalities) from synthesis, crystal structures, optical optoelectronic then systematically summarized. particular, phosphor‐converted LEDs electroluminescent using fully examined. Ultimately, based on current development future directions terms devices discussed.

Language: Английский

Citations

254