Strongly Emissive Lead‐Free 0D Cs3Cu2I5 Perovskites Synthesized by a Room Temperature Solvent Evaporation Crystallization for Down‐Conversion Light‐Emitting Devices and Fluorescent Inks DOI
Zhang Fa, Ziheng Zhao, Bingkun Chen

et al.

Advanced Optical Materials, Journal Year: 2020, Volume and Issue: 8(8)

Published: Feb. 11, 2020

Abstract Lead‐free 0D metal halide perovskites are emerging environmentally friendly materials exhibiting large exciton binding energy, which have recently attracted great attention for their excellent light emission properties and favorable stability. Herein, solvent evaporation crystallization at room temperature is adopted to fabricate Cs 3 Cu 2 I 5 perovskite millimeter‐sized crystals, show strong blue photoluminescence (PL) with quantum yield of up 89%, a Stockes shift long (microsecond) PL lifetime, originating from self‐trapped excitons. UV pumped light‐emitting diodes demonstrated by using powder as solid‐state phosphor, the precursor solution these crystals used fluorescent ink. Furthermore, blue‐emitting composite /polyvinylidene fluoride films produced spin coating through followed patterning direct laser writing technology, potentially useful displays. Finally, method expanded yellow emissive CsCu changing chemical molar ratio precursor.

Language: Английский

State of the Art and Prospects for Halide Perovskite Nanocrystals DOI Creative Commons
Amrita Dey, Junzhi Ye, Apurba De

et al.

ACS Nano, Journal Year: 2021, Volume and Issue: 15(7), P. 10775 - 10981

Published: June 17, 2021

Metal-halide perovskites have rapidly emerged as one of the most promising materials 21st century, with many exciting properties and great potential for a broad range applications, from photovoltaics to optoelectronics photocatalysis. The ease which metal-halide can be synthesized in form brightly luminescent colloidal nanocrystals, well their tunable intriguing optical electronic properties, has attracted researchers different disciplines science technology. In last few years, there been significant progress shape-controlled synthesis perovskite nanocrystals understanding applications. this comprehensive review, having expertise fields (chemistry, physics, device engineering) joined together provide state art overview future prospects nanocrystal research.

Language: Английский

Citations

1094
An overview on enhancing the stability of lead halide perovskite quantum dots and their applications in phosphor-converted LEDs DOI
Yi Wei, Ziyong Cheng, Jun Lin

et al.

Chemical Society Reviews, Journal Year: 2018, Volume and Issue: 48(1), P. 310 - 350

Published: Nov. 22, 2018

Beyond the unprecedented success achieved in photovoltaics (PVs), lead halide perovskites (LHPs) have shown great potential other optoelectronic devices. Among them, nanometer-scale perovskite quantum dots (PQDs) with fascinating optical properties including high brightness, tunable emission wavelength, color purity, and defect tolerance been regarded as promising alternative down-conversion materials phosphor-converted light-emitting diodes (pc-LEDs) for lighting next-generation of display technology. Despite applications various fields, they received strong criticism lack stability. The poor stability has also attracted much attention. Within a few years, numerous strategies towards enhancing developed. This review summarizes mechanisms intrinsic- extrinsic-environment-induced decomposition PQDs. Simultaneously, improving PQDs are reviewed detail, which can be classified into four types: (1) compositional engineering; (2) surface (3) matrix encapsulation; (4) device encapsulation. Finally, challenges applying pc-LEDs highlighted, some possible solutions to improve together suggestions further performance well lifetime provided.

Language: Английский

Citations

1058
Metal Halide Perovskite Nanocrystals: Synthesis, Post-Synthesis Modifications, and Their Optical Properties DOI Creative Commons
Javad Shamsi, Alexander S. Urban, Muhammad Imran

et al.

Chemical Reviews, Journal Year: 2019, Volume and Issue: 119(5), P. 3296 - 3348

Published: Feb. 13, 2019

Metal halide perovskites represent a flourishing area of research, driven by both their potential application in photo-voltaics and optoelectronics, for the fundamental science underpinning unique optoelectronic properties. The advent colloidal methods synthesis perovskite nanocrystals has brought to attention inter-esting aspects this new type materials, above all defect-tolerance. This review aims provide an updated survey fast-moving field, with main focus on synthesis. We examine chemistry ca-pability different synthetic routes control shape, size optical properties resulting nano-crystals. also up date overview post-synthesis transformations, summarize various so-lution processes aimed at fabricating perovskite-based nanocomposites. then nanocrystals, focusing linear properties, effects quantum confinement and, then, current knowledge exciton binding energies. discuss emergence non-linear phenomena such as multiphoton absorption, biexcitons carrier multiplication. At last, we outlook most cogent open questions possible future directions.

Language: Английский

Citations

696
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
Low dimensional metal halide perovskites and hybrids DOI Creative Commons
Chenkun Zhou, Haoran Lin, Qingquan He

et al.

Materials Science and Engineering R Reports, Journal Year: 2018, Volume and Issue: 137, P. 38 - 65

Published: Dec. 20, 2018

Language: Английский

Citations

401
A Highly Red‐Emissive Lead‐Free Indium‐Based Perovskite Single Crystal for Sensitive Water Detection DOI
Lei Zhou, Jin‐Feng Liao,

Zeng‐Guang Huang

et al.

Angewandte Chemie International Edition, Journal Year: 2019, Volume and Issue: 58(16), P. 5277 - 5281

Published: Feb. 21, 2019

Low-dimensional luminescent lead halide perovskites have attracted tremendous attention for their fascinating optoelectronic properties, while the toxicity of is still considered a drawback. Herein, we report novel lead-free zero-dimensional (0D) indium-based perovskite (Cs2 InBr5 ⋅H2 O) single crystal that red-luminescent with high photoluminescence quantum yield (PLQY) 33 %. Experimental and computational studies reveal strong PL emission might originate from self-trapping excitons (STEs) result an excited-state structural deformation. More importantly, in situ transformation between hydrated Cs2 O dehydrated form accompanied switchable dual emission, which enables it to act as water-sensor humidity detection or traces water organic solvents.

Language: Английский

Citations

389
Improving the Stability of Metal Halide Perovskite Quantum Dots by Encapsulation DOI
Wenzhen Lv, Ling Li,

Mingchuan Xu

et al.

Advanced Materials, Journal Year: 2019, Volume and Issue: 31(28)

Published: May 15, 2019

Abstract Metal halide perovskite quantum dots (PQDs), with excellent optical properties and spectacular characteristics of direct tunable bandgaps, strong light‐absorption coefficients, high defect tolerance, low nonradiative recombination rates, are highly attractive for modern optoelectronic devices. However, the stability issue PQDs remains a critical challenge this newly emerged material despite recent rapid progress. Here, encapsulation strategies to improve comprehensively reviewed. A special emphasis is put on effects encapsulation, ranging from improvement chemical stability, inhibition light‐induced decomposition, enhancement thermal stability. Particular attention devoted summarizing approaches, including sol–gel method, template physical blending, microencapsulation. The selection principles materials, rigid lattice or porous structure inorganic compounds, penetration rate oxygen water, as well swelling–deswelling process polymers, addressed systematically. Special interest applications encapsulated improved in white light‐emitting diodes, lasers, biological applications. Finally, main challenges encapsulating further investigation directions discussed future research promote development stable metal materials.

Language: Английский

Citations

371
What Defines a Halide Perovskite? DOI Creative Commons
Quinten A. Akkerman, Liberato Manna

ACS Energy Letters, Journal Year: 2020, Volume and Issue: 5(2), P. 604 - 610

Published: Jan. 28, 2020

ADVERTISEMENT RETURN TO ISSUEPREVViewpointNEXTWhat Defines a Halide Perovskite?Quinten A. Akkerman*Quinten AkkermanNanochemistry Department, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy*Email: [email protected]More by Quinten Akkerman and Liberato Manna*Liberato MannaNanochemistry Mannahttp://orcid.org/0000-0003-4386-7985Cite this: ACS Energy Lett. 2020, 5, 2, 604–610Publication Date (Web):January 28, 2020Publication History Received7 January 2020Accepted17 2020Published online28 inissue 14 February 2020https://pubs.acs.org/doi/10.1021/acsenergylett.0c00039https://doi.org/10.1021/acsenergylett.0c00039article-commentaryACS PublicationsCopyright © 2020 American Chemical Society. This publication is licensed under CC-BY. Open Access the license indicated. Learn MoreArticle Views35965Altmetric-Citations254LEARN ABOUT THESE METRICSArticle Views are COUNTER-compliant sum of full text article downloads since November 2008 (both PDF HTML) across all institutions individuals. These metrics regularly updated to reflect usage leading up last few days.Citations number other articles citing this article, calculated Crossref daily. Find more information about citation counts.The Altmetric Attention Score quantitative measure attention that research has received online. Clicking on donut icon will load page at altmetric.com with additional details score social media presence for given article. how calculated. Share Add toView InAdd Full Text ReferenceAdd Description ExportRISCitationCitation abstractCitation referencesMore Options onFacebookTwitterWechatLinked InRedditEmail (6 MB) Get e-AlertscloseSUBJECTS:Cations,Halogens,Inorganic compounds,Metals,Perovskites e-Alerts

Language: Английский

Citations

362
Highly Emissive Self‐Trapped Excitons in Fully Inorganic Zero‐Dimensional Tin Halides DOI Creative Commons
Bogdan M. Benin, Dmitry N. Dirin, Viktoriia Morad

et al.

Angewandte Chemie International Edition, Journal Year: 2018, Volume and Issue: 57(35), P. 11329 - 11333

Published: July 12, 2018

Abstract The spatial localization of charge carriers to promote the formation bound excitons and concomitantly enhance radiative recombination has long been a goal for luminescent semiconductors. Zero‐dimensional materials structurally impose carrier result in localized Frenkel excitons. Now fully inorganic, perovskite‐derived zero‐dimensional Sn II material Cs 4 SnBr 6 is presented that exhibits room‐temperature broad‐band photoluminescence centered at 540 nm with quantum yield (QY) 15±5 %. A series analogous compositions following general formula 4− x Sn(Br 1− y I ) (A=Rb, K; ≤1, ≤1) can be prepared. emission these ranges from 500 620 possibility compositionally tune Stokes shift self‐trapped exciton bands.

Language: Английский

Citations

307
Pressure-induced emission of cesium lead halide perovskite nanocrystals DOI Creative Commons
Zhiwei Ma, Zhun Liu, Siyu Lu

et al.

Nature Communications, Journal Year: 2018, Volume and Issue: 9(1)

Published: Oct. 23, 2018

Abstract Metal halide perovskites (MHPs) are of great interest for optoelectronics because their high quantum efficiency in solar cells and light-emitting devices. However, exploring an effective strategy to further improve optical activities remains a considerable challenge. Here, we report that nanocrystals (NCs) the initially nonfluorescent zero-dimensional (0D) cesium lead perovskite Cs 4 PbBr 6 exhibit distinct emission under pressure 3.01 GPa. Subsequently, intensity NCs experiences significant increase upon compression. Joint experimental theoretical analyses indicate such pressure-induced (PIE) may be ascribed enhanced activity increased binding energy self-trapped excitons This phenomenon is result large distortion [PbBr ] 4− octahedral motifs resulting from structural phase transition. Our findings demonstrate can robust tool boost photoluminescence provide insights into relationship between structure properties 0D MHPs extreme conditions.

Language: Английский

Citations

288