Understanding Electron–Phonon Interactions in 3D Lead Halide Perovskites from the Stereochemical Expression of 6s2 Lone Pairs DOI

Xu Huang,

Xiaotong Li,

Yu Tao

et al.

Journal of the American Chemical Society, Journal Year: 2022, Volume and Issue: 144(27), P. 12247 - 12260

Published: June 29, 2022

The electron-phonon (e-ph) interaction in lead halide perovskites (LHPs) plays a role variety of physical phenomena. Unveiling how the local lattice distortion responds to charge carriers is critical step toward understanding e-ph LHPs. Herein, we advance fundamental LHPs from perspective stereochemical activity 6s2 lone-pair electrons on Pb2+ cation. We demonstrate model system based three with distinctive activities for studying structure-property relationships. By tuning A-cation chemistry, synthesized single-crystal CsPbBr3, (MA0.13EA0.87)PbBr3 (MA+ = methylammonium; EA+ ethylammonium), and (MHy)PbBr3 (MHy+ methylhydrazinium), which exhibit stereo-inactive, dynamic stereo-active, static stereo-active lone pairs, respectively. This gives rise distortions low-frequency vibrational modes. find that leads blue shift band gap as temperature increases structure pair but red pair. Furthermore, analyses temperature-dependent low-energy photoluminescence tails reveal strength increasing activity, leading transition large polaron small polaron, has significant influence emission spectra carrier dynamics. Our results highlight controlling gap, phonon, polaronic effect provide guidelines optimizing optoelectronic properties, especially tin-based germanium-based perovskites, where pairs are more prominent than their counterparts.

Language: Английский

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

579
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

283
ns2 Electron (Bi3+ and Sb3+) Doping in Lead-Free Metal Halide Perovskite Derivatives DOI
Habibul Arfin, Anuraj S. Kshirsagar, Jagjit Kaur

et al.

Chemistry of Materials, Journal Year: 2020, Volume and Issue: 32(24), P. 10255 - 10267

Published: Dec. 3, 2020

Bi3+ and Sb3+ doping (and codoping with lanthanides) in Cs2SnCl6 vacancy ordered perovskites Cs2MInCl6 (M = Na, K, Ag) double has been shown to open up new opportunities for solid state lighting. ns2 outer electronic configuration can tailor both optical absorption emission properties phosphor-converted light emitting diode (pc-LEDs) applications. Therefore, the s-electron dopants (Bi3+ Sb3+) act as sensitizers emitters. This is because dopant s-electrons contribute near band edges of host, unlike cases d- f-electron dopants. Consequently, also a sensitizer lanthanide luminescence systems like Bi3+-Ln3+ codoped Cs2AgInCl6, where Ln Er, Yb, Tb. In this perspective, we provide insights on tailoring by electron doping. These are then connected rational design hosts, dopants, codopants, their potential Finally, discuss challenges future research.

Language: Английский

Citations

242
Photoluminescence of Singlet/Triplet Self‐Trapped Excitons in Sb3+‐Based Metal Halides DOI

Yuyu Jing,

Ying Liu, Mingze Li

et al.

Advanced Optical Materials, Journal Year: 2021, Volume and Issue: 9(8)

Published: Feb. 18, 2021

Abstract Emerging lead‐free metal halides with low toxicity and unparalleled optoelectronic properties have attracted growing research interests, also demonstrating extensive application potentials. Among these, Sb 3+ ‐based all‐inorganic/organic–inorganic hybrid become a vital group due to the special energy level distribution along diverse optical properties. However, there remains gap in understanding relationship between crystal structure radiation process of involved emission. Herein, existing reports about luminescent are revisited their structure–luminescence–application is explored, it further established that triplet self‐trapped excitons (STEs) emission varies different crystallographic environments endows tunable performance. This work aims provide constructive strategies exploitation halides, guides structural design photoluminescence tuning doped halide materials.

Language: Английский

Citations

209
Indium-antimony-halide single crystals for high-efficiency white-light emission and anti-counterfeiting DOI Creative Commons

Jun‐Hua Wei,

Jin‐Feng Liao, Lei Zhou

et al.

Science Advances, Journal Year: 2021, Volume and Issue: 7(34)

Published: Aug. 20, 2021

Indium-antimony bimetallic halide single crystal exhibits single-source white-light emission and anti-counterfeiting potential.

Language: Английский

Citations

185
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

Citations

173
Long Persistent Luminescence from Metal–Organic Compounds: State of the Art DOI
Bo Zhou, Dongpeng Yan

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(19)

Published: March 18, 2023

Abstract The excited‐state tuning of luminescent metal–organic compounds has made great progress in the fields optical imaging, photocatalysis, photodynamic therapy, light‐emitting devices, sensors, and so on. Although with high luminescence efficiency can be realized via enhanced molecular rigidity heavy‐atom effect, their corresponding lifetimes are still limited on order a nanosecond to millisecond, owing inherent competition between luminous lifetime. Therefore, advanced applications (i.e., persistent afterglow information security, anti‐counterfeiting, smart materials, among others) related long (LPL, typically lifetime larger than millisecond) seriously hindered. This review gives timely systematic summary for realizing room‐temperature phosphorescence (RTP)‐type thermally activated delayed fluorescence (TADF)‐type LPL during last few years. Particularly, based perspectives time, space, energy dimensions, fundamental materials design coordination assembly systematically described first time. Moreover, internal external factors influencing properties terms efficiency, lifetime, color illustrated. Last but not least, challenges also discussed developing from compounds.

Language: Английский

Citations

145
Integrated Afterglow and Self‐Trapped Exciton Emissions in Hybrid Metal Halides for Anti‐Counterfeiting Applications DOI
Zhishan Luo,

Yejing Liu,

Yulian Liu

et al.

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(18)

Published: March 2, 2022

0D hybrid metal halides (0D HMHs) are considered to be promising luminescent emitters. HMHs commonly exhibit self-trapped exciton (STE) emissions originating from the inorganic halide anion units. Exploring and utilizing emission features of organic cation units in is highly desired enrich their optical properties as multifunctional materials. Here, tunable successfully achieved triphenylsulfonium (Ph3 S+ )-based HMHs. Notably, integrated afterglow STE with adjustable intensities obtained S)2 Sn1-x Tex Cl6 (x = 0-1) via delicate combination [SnCl6 ]2- [TeCl6 . Moreover, such a strategy can readily extended develop other HMH materials intriguing properties. As demonstration, Zn1-x Mnx Cl4 constructed achieve Mn2+ d-d high efficiency. Consequently, these novel colorful applied multiple anti-counterfeiting applications.

Language: Английский

Citations

131
Organic-inorganic hybrid manganese bromine single crystal with dual-band photoluminescence from polaronic and bipolaronic excitons DOI
Hui Peng, Tao Huang, Bingsuo Zou

et al.

Nano Energy, Journal Year: 2021, Volume and Issue: 87, P. 106166 - 106166

Published: May 20, 2021

Language: Английский

Citations

128
Sb-Doped Metal Halide Nanocrystals: A 0D versus 3D Comparison DOI Creative Commons
Dongxu Zhu, Matteo L. Zaffalon, Juliette Zito

et al.

ACS Energy Letters, Journal Year: 2021, Volume and Issue: 6(6), P. 2283 - 2292

Published: May 27, 2021

We synthesize colloidal nanocrystals (NCs) of Rb3InCl6, composed isolated metal halide octahedra ("0D"), and Cs2NaInCl6 Cs2KInCl6 double perovskites, where all share corners are interconnected ("3D"), with the aim to elucidate compare their optical features once doped Sb3+ ions. Our computational analyses evidence that photoluminescence quantum yield (PLQY) these systems is consistently lower than corresponding bulk materials due presence deep surface traps from under-coordinated Also, Sb-doped "0D" Rb3InCl6 NCs exhibit a higher PLQY "3D" NCs, most likely because excitons responsible for PL emission migrate faster in 3D 0D NCs. also observe feature large Stokes shift (varying system system), should be interest applications photon management scintillation technologies. Scintillation properties evaluated via radioluminescence experiments, re-absorption-free waveguiding performance large-area plastic scintillators assessed using Monte Carlo ray-tracing simulations.

Language: Английский

Citations

118