1
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Kambhampati P. Unraveling the excitonics of light emission from metal-halide perovskite quantum dots. NANOSCALE 2024; 16:15033-15058. [PMID: 39052235 DOI: 10.1039/d4nr01481b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
Metal halide semicondictor perovskites have been under intense investigation for their promise in light absorptive applications like photovoltaics. They have more recently experienced interest for their promise in light emissive applications. A key aspect of perovskites is their glassy, ionic lattice that exhibits dynamical disorder. One possible result of this dynamical disorder is their strong coupling between electronic and lattice degrees of freedom which may confer remarkable properties for light emission such as defect tolerance. How does the system, comprised of excitons, couple to the bath, comprised of lattice modes? How does this system-bath interaction give rise to novel light emissive properties and how do these properties give insight into the nature of these materials? We review recent work from this group in which time-resolved photoluminescence spectroscopy is used to reveal such insights. Based upon a fast time resolution of 3 ps, energy resolution, and temperature dependence, a wide variety of insights are gleaned. These insights include: lattice contributions to the emission linewidths, multiexciton formation, hot carrier cooling, excitonic fine structure, single dot superradiance, and a breakdown of the Condon approximation, all due to complex structural dynamics in these materials.
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2
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Zhang T, Bai Y, Feng S, Xue Q, Hu X, Xu X, Liu H, Luponosov YN, Niazi MBK, Li X. Mechanical milling processed highly luminescent Cs-Pb-Br perovskite emitters. Chem Commun (Camb) 2023; 59:11827-11830. [PMID: 37712301 DOI: 10.1039/d3cc01345f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/16/2023]
Abstract
We report well-dispersed highly emitting perovskite emitters synthesized via the surfactant-assisted ball-milling method. Both the emitting peaks and the colour purity of the synthesized perovskite emitters can be effectively tuned through additive functionalization and precursor engineering.
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Affiliation(s)
- Teng Zhang
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China.
| | - Youru Bai
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China.
| | - Shaohuan Feng
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China.
| | - Qifan Xue
- State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
- Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, P. R. China
| | - Xiaotian Hu
- College of Chemistry and Chemical Engineering/Institute of Polymers and Energy Chemistry (IPEC)/Jiangxi Provincial Key Laboratory of New Energy Chemistry, Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China
| | - Xueqing Xu
- Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, P. R. China
| | - Heyuan Liu
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China.
| | - Yuriy N Luponosov
- Enikolopov Institute of Synthetic Polymeric Materials of the Russian Academy of Sciences, Moscow 117393, Russia
| | - Muhammad Bilal Khan Niazi
- School of Chemical & Materials Engineering, National University of Sciences & Technology, Islamabad, Pakistan
| | - Xiyou Li
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China.
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3
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Das Adhikari S, Gualdrón Reyes AF, Paul S, Torres J, Escuder B, Mora-Seró I, Masi S. Impact of core-shell perovskite nanocrystals for LED applications: successes, challenges, and prospects. Chem Sci 2023; 14:8984-8999. [PMID: 37655016 PMCID: PMC10466310 DOI: 10.1039/d3sc02955g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 07/13/2023] [Indexed: 09/02/2023] Open
Abstract
Perovskite nanocrystals (PeNCs) synthesized by colloidal solution methods are an outstanding case of study due to their remarkable optical features, different from their bulk counterpart, such as a tuneable band gap and narrower photoluminescence emission, altered by the size and shape. However, the stability of these systems needs to be improved to consolidate their application in optoelectronic devices. Improved PeNC quality is associated with a less defective structure, as it affects negatively the photoluminescence quantum yield (PLQY), due to the essential, but at the same time labile interaction between the colloidal capping ligands and the perovskite core. In this sense, it would be extremely effective to obtain an alternative method to stabilize the PeNC phases and passivate the surface, in order to improve both stability and optical properties. This objective can be reached exploiting the structural benefits of the interaction between the perovskite and other organic or inorganic materials with a compatible structure and optical properties and limiting the optical drawbacks. This perspective contemplates different combinations of core/shell PeNCs and the critical steps during the synthesis, including drawbacks and challenges based on their optical properties. Additionally, it provides insights for future light emitting diode (LED) applications and advanced characterization. Finally, the existing challenges and opportunities for core/shell PeNCs are discussed.
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Affiliation(s)
- Samrat Das Adhikari
- Institute of Advanced Materials (INAM), Universitat Jaume I (UJI) Avenida de Vicent Sos Baynat, s/n Castelló 12071 Spain
| | - Andrés F Gualdrón Reyes
- Facultad de Ciencias, Instituto de Ciencias Químicas, Isla Teja Universidad Austral de Chile Valdivia 5090000 Chile
| | - Subir Paul
- Institute of Advanced Materials (INAM), Universitat Jaume I (UJI) Avenida de Vicent Sos Baynat, s/n Castelló 12071 Spain
| | - Jeevan Torres
- Institute of Advanced Materials (INAM), Universitat Jaume I (UJI) Avenida de Vicent Sos Baynat, s/n Castelló 12071 Spain
| | - Beatriu Escuder
- Institute of Advanced Materials (INAM), Universitat Jaume I (UJI) Avenida de Vicent Sos Baynat, s/n Castelló 12071 Spain
| | - Iván Mora-Seró
- Institute of Advanced Materials (INAM), Universitat Jaume I (UJI) Avenida de Vicent Sos Baynat, s/n Castelló 12071 Spain
| | - Sofia Masi
- Institute of Advanced Materials (INAM), Universitat Jaume I (UJI) Avenida de Vicent Sos Baynat, s/n Castelló 12071 Spain
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4
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Welyab G, Abebe M, Mani D, Thankappan A, Thomas S, Aga FG, Kim JY. All-Inorganic CsPbBr 3 Perovskite Nanocrystals Synthesized with Olive Oil and Oleylamine at Room Temperature. MICROMACHINES 2023; 14:1332. [PMID: 37512642 PMCID: PMC10383321 DOI: 10.3390/mi14071332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 06/24/2023] [Accepted: 06/28/2023] [Indexed: 07/30/2023]
Abstract
Room temperature (RT) synthesis of the ternary cesium lead bromide CsPbBr3 quantum dots with oleic acid and oleylamine ligands was developed by Zeng and coworkers in 2016. In their works, the supersaturated recrystallization (SR) was adopted as a processing method without requiring inert gas and high-temperature injection. However, the oleic acid ligand for haloplumbate is known to be relatively unstable. Hence, in this work, we employed the eco-friendly olive oil to replace the oleic acid portion for the SR process at RT. Resultantly, we found that the cube-shaped nanocrystal has a size of ~40-42 nm and an optical bandgap of ~2.3 eV independent of the surface ligands, but the photoluminescence lifetime (τav) and crystal packing are dependent on the ligand species, e.g., τav = 3.228 ns (olive oil and oleylamine; here less ordered) vs. 1.167 ns (oleic acid and oleylamine). Importantly, we explain the SR mechanism from the viewpoint of the classical LaMer model combined with the solvent engineering technique in details.
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Affiliation(s)
- Getachew Welyab
- Faculty of Materials Science and Engineering, Jimma Institute of Technology, Jimma University, Jimma P.O. Box 378, Ethiopia
- Department of Physics, College of Natural and Computational Science, Mizan-Tepi University, Mizan P.O. Box 260, Ethiopia
| | - Mulualem Abebe
- Faculty of Materials Science and Engineering, Jimma Institute of Technology, Jimma University, Jimma P.O. Box 378, Ethiopia
| | - Dhakshnamoorthy Mani
- Faculty of Materials Science and Engineering, Jimma Institute of Technology, Jimma University, Jimma P.O. Box 378, Ethiopia
| | | | - Sabu Thomas
- School of Energy Materials, Mahatma Gandhi University, Kottayam 686560, India
| | - Fekadu Gochole Aga
- Department of Materials Science and Engineering, Adama Science and Technology University, Adama P.O. Box 1888, Ethiopia
- Center of Advanced Materials Science and Engineering, Adama Science and Technology University, Adama P.O. Box 1888, Ethiopia
| | - Jung Yong Kim
- Department of Materials Science and Engineering, Adama Science and Technology University, Adama P.O. Box 1888, Ethiopia
- Center of Advanced Materials Science and Engineering, Adama Science and Technology University, Adama P.O. Box 1888, Ethiopia
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5
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Weinberg D, Park Y, Limmer DT, Rabani E. Size-Dependent Lattice Symmetry Breaking Determines the Exciton Fine Structure of Perovskite Nanocrystals. NANO LETTERS 2023. [PMID: 37229762 DOI: 10.1021/acs.nanolett.3c00861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The order of bright and dark excitonic states in lead-halide perovskite nanocrystals is debated. It has been proposed that the Rashba effect, driven by lattice-induced symmetry breaking, causes a bright excitonic ground state. Direct measurements of excitonic spectra, however, show the signatures of a dark ground state, bringing the role of the Rashba effect into question. We use an atomistic theory to model the exciton fine structure of perovskite nanocrystals, accounting for realistic lattice distortions. We calculate optical gaps and excitonic features that compare favorably with experimental works. The exciton fine structure splittings show a nonmonotonic size dependence due to a structural transition between cubic and orthorhombic phases. Additionally, the excitonic ground state is found to be dark with spin triplet character, exhibiting a small Rashba coupling. We additionally explore the effects of nanocrystal shape on the fine structure, clarifying observations on polydisperse nanocrystals.
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Affiliation(s)
- Daniel Weinberg
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Yoonjae Park
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - David T Limmer
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Kavli Energy NanoScience Institute, Berkeley, California 94720, United States
| | - Eran Rabani
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- The Raymond and Beverly Sackler Center of Computational Molecular and Materials Science, Tel Aviv University, Tel Aviv 69978, Israel
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6
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Ghosh A, Strandell DP, Kambhampati P. A spectroscopic overview of the differences between the absorbing states and the emitting states in semiconductor perovskite nanocrystals. NANOSCALE 2023; 15:2470-2487. [PMID: 36691921 DOI: 10.1039/d2nr05698d] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Semiconductor perovskites have been under intense investigation for their promise in optoelectronic applications and their novel and unique physical properties. There have been a variety of material implementations of perovskites from thin films to single crystals to nanocrystals. The nanocrystal form, in particular, is attractive as it enables solution processing and also spectroscopically probes both absorptive and emissive transitions. Broadly, the literature is comprised of experiments of either form, but the experiments are rarely performed in concert and are not discussed in a unified picture. For example, absorptive experiments are typically transient absorption measurements, which aim to measure carrier kinetics and dynamics. In contrast, the emissive experiments largely focus on excitonic fine structures and coupling to phonons. The time resolved emission experiments report on excited state lifetimes and their dependence on temperature. There are broad differences in the spectroscopy techniques and the questions asked in both classes of experiments. Yet there is one measure in common that suggests there are mysteries in our understanding of how the absorbing and emitting states are connected. The linewidth of emission spectra is always larger than the linewidth of absorption spectra. The question of the physics underlying linewidths is complex and is one of the central issues in perovskite nanocrystals. So why are the absorptive and emissive linewidths different? At present even this simple question has no clear answer. The more complex questions of the structure and dynamics of absorptive and emissive states are even more ambiguous. Hence there is a need to connect these experiments and the relevant states. Here, we provide an overview of the salient absorptive and emissive spectroscopy techniques in an effort to begin connecting these two disparate areas of inquiry.
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Affiliation(s)
- Arnab Ghosh
- Department of Chemistry, McGill University, Montreal, Quebec H3A 0G4, Canada.
| | - Dallas P Strandell
- Department of Chemistry, McGill University, Montreal, Quebec H3A 0G4, Canada.
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7
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Cao Y, Shao Y, Zhang J, Chen C, Wang Q. The photothermal stability study of silica-coated CsPbBr3 perovskite nanocrystals. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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8
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Dey A, Ye J, De A, Debroye E, Ha SK, Bladt E, Kshirsagar AS, Wang Z, Yin J, Wang Y, Quan LN, Yan F, Gao M, Li X, Shamsi J, Debnath T, Cao M, Scheel MA, Kumar S, Steele JA, Gerhard M, Chouhan L, Xu K, Wu XG, Li Y, Zhang Y, Dutta A, Han C, Vincon I, Rogach AL, Nag A, Samanta A, Korgel BA, Shih CJ, Gamelin DR, Son DH, Zeng H, Zhong H, Sun H, Demir HV, Scheblykin IG, Mora-Seró I, Stolarczyk JK, Zhang JZ, Feldmann J, Hofkens J, Luther JM, Pérez-Prieto J, Li L, Manna L, Bodnarchuk MI, Kovalenko MV, Roeffaers MBJ, Pradhan N, Mohammed OF, Bakr OM, Yang P, Müller-Buschbaum P, Kamat PV, Bao Q, Zhang Q, Krahne R, Galian RE, Stranks SD, Bals S, Biju V, Tisdale WA, Yan Y, Hoye RLZ, Polavarapu L. State of the Art and Prospects for Halide Perovskite Nanocrystals. ACS NANO 2021; 15:10775-10981. [PMID: 34137264 PMCID: PMC8482768 DOI: 10.1021/acsnano.0c08903] [Citation(s) in RCA: 372] [Impact Index Per Article: 124.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 05/04/2021] [Indexed: 05/10/2023]
Abstract
Metal-halide perovskites have rapidly emerged as one of the most promising materials of the 21st century, with many exciting properties and great potential for a broad range of applications, from photovoltaics to optoelectronics and photocatalysis. The ease with which metal-halide perovskites can be synthesized in the form of brightly luminescent colloidal nanocrystals, as well as their tunable and intriguing optical and electronic properties, has attracted researchers from different disciplines of science and technology. In the last few years, there has been a significant progress in the shape-controlled synthesis of perovskite nanocrystals and understanding of their properties and applications. In this comprehensive review, researchers having expertise in different fields (chemistry, physics, and device engineering) of metal-halide perovskite nanocrystals have joined together to provide a state of the art overview and future prospects of metal-halide perovskite nanocrystal research.
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Grants
- from U. S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division
- Ministry of Education, Culture, Sports, Science and Technology
- European Research Council under the European Unionâ??s Horizon 2020 research and innovation programme (HYPERION)
- Ministry of Education - Singapore
- FLAG-ERA JTC2019 project PeroGas.
- Deutsche Forschungsgemeinschaft
- Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences of the U.S. Department of Energy
- EPSRC
- iBOF funding
- Agencia Estatal de Investigaci�ón, Ministerio de Ciencia, Innovaci�ón y Universidades
- National Research Foundation Singapore
- National Natural Science Foundation of China
- Croucher Foundation
- US NSF
- Fonds Wetenschappelijk Onderzoek
- National Science Foundation
- Royal Society and Tata Group
- Department of Science and Technology, Ministry of Science and Technology
- Swiss National Science Foundation
- Natural Science Foundation of Shandong Province, China
- Research 12210 Foundation?Flanders
- Japan International Cooperation Agency
- Ministry of Science and Innovation of Spain under Project STABLE
- Generalitat Valenciana via Prometeo Grant Q-Devices
- VetenskapsrÃÂ¥det
- Natural Science Foundation of Jiangsu Province
- KU Leuven
- Knut och Alice Wallenbergs Stiftelse
- Generalitat Valenciana
- Agency for Science, Technology and Research
- Ministerio de EconomÃÂa y Competitividad
- Royal Academy of Engineering
- Hercules Foundation
- China Association for Science and Technology
- U.S. Department of Energy
- Alexander von Humboldt-Stiftung
- Wenner-Gren Foundation
- Welch Foundation
- Vlaamse regering
- European Commission
- Bayerisches Staatsministerium für Wissenschaft, Forschung und Kunst
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Affiliation(s)
- Amrita Dey
- Chair for
Photonics and Optoelectronics, Nano-Institute Munich, Department of
Physics, Ludwig-Maximilians-Universität
(LMU), Königinstrasse 10, 80539 Munich, Germany
| | - Junzhi Ye
- Cavendish
Laboratory, University of Cambridge, 19 JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Apurba De
- School of
Chemistry, University of Hyderabad, Hyderabad 500 046, India
| | - Elke Debroye
- Department
of Chemistry, KU Leuven, 3001 Leuven, Belgium
| | - Seung Kyun Ha
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
| | - Eva Bladt
- EMAT, University
of Antwerp, Groenenborgerlaan
171, 2020 Antwerp, Belgium
- NANOlab Center
of Excellence, University of Antwerp, 2020 Antwerp, Belgium
| | - Anuraj S. Kshirsagar
- Department
of Chemistry, Indian Institute of Science
Education and Research (IISER), Pune 411008, India
| | - Ziyu Wang
- School
of
Science and Technology for Optoelectronic Information ,Yantai University, Yantai, Shandong Province 264005, China
| | - Jun Yin
- Division
of Physical Science and Engineering, King
Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
- CINBIO,
Universidade de Vigo, Materials Chemistry
and Physics group, Departamento de Química Física, Campus Universitario As Lagoas,
Marcosende, 36310 Vigo, Spain
- Advanced
Membranes and Porous Materials Center, King
Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Yue Wang
- MIIT Key
Laboratory of Advanced Display Materials and Devices, Institute of
Optoelectronics & Nanomaterials, College of Materials Science
and Engineering, Nanjing University of Science
and Technology, Nanjing 210094, China
| | - Li Na Quan
- Department
of Chemistry, University of California,
Berkeley, Berkeley, California 94720, United States
- Materials
Sciences Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720, United States
| | - Fei Yan
- LUMINOUS!
Center of Excellence for Semiconductor Lighting and Displays, TPI-The
Photonics Institute, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798
| | - Mengyu Gao
- Materials
Sciences Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720, United States
- Department
of Materials Science and Engineering, University
of California, Berkeley, California 94720, United States
| | - Xiaoming Li
- MIIT Key
Laboratory of Advanced Display Materials and Devices, Institute of
Optoelectronics & Nanomaterials, College of Materials Science
and Engineering, Nanjing University of Science
and Technology, Nanjing 210094, China
| | - Javad Shamsi
- Cavendish
Laboratory, University of Cambridge, 19 JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Tushar Debnath
- Chair for
Photonics and Optoelectronics, Nano-Institute Munich, Department of
Physics, Ludwig-Maximilians-Universität
(LMU), Königinstrasse 10, 80539 Munich, Germany
| | - Muhan Cao
- Institute
of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory
for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, China
| | - Manuel A. Scheel
- Lehrstuhl
für Funktionelle Materialien, Physik Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Sudhir Kumar
- Institute
for Chemical and Bioengineering, Department of Chemistry and Applied
Biosciences, ETH-Zurich, CH-8093 Zürich, Switzerland
| | - Julian A. Steele
- MACS Department
of Microbial and Molecular Systems, KU Leuven, 3001 Leuven, Belgium
| | - Marina Gerhard
- Chemical
Physics and NanoLund Lund University, PO Box 124, 22100 Lund, Sweden
| | - Lata Chouhan
- Graduate
School of Environmental Science and Research Institute for Electronic
Science, Hokkaido University, Sapporo, Hokkaido 001-0020, Japan
| | - Ke Xu
- Department
of Chemistry and Biochemistry, University
of California, Santa Cruz, California 95064, United States
- Multiscale
Crystal Materials Research Center, Shenzhen Institute of Advanced
Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Xian-gang Wu
- Beijing
Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems,
School of Materials Science & Engineering, Beijing Institute of Technology, 5 Zhongguancun South Street, Haidian
District, Beijing 100081, China
| | - Yanxiu Li
- Department
of Materials Science and Engineering, and Centre for Functional Photonics
(CFP), City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong S.A.R.
| | - Yangning Zhang
- McKetta
Department of Chemical Engineering and Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712-1062, United States
| | - Anirban Dutta
- School
of Materials Sciences, Indian Association
for the Cultivation of Science, Kolkata 700032, India
| | - Chuang Han
- Department
of Chemistry and Biochemistry, San Diego
State University, San Diego, California 92182, United States
| | - Ilka Vincon
- Chair for
Photonics and Optoelectronics, Nano-Institute Munich, Department of
Physics, Ludwig-Maximilians-Universität
(LMU), Königinstrasse 10, 80539 Munich, Germany
| | - Andrey L. Rogach
- Department
of Materials Science and Engineering, and Centre for Functional Photonics
(CFP), City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong S.A.R.
| | - Angshuman Nag
- Department
of Chemistry, Indian Institute of Science
Education and Research (IISER), Pune 411008, India
| | - Anunay Samanta
- School of
Chemistry, University of Hyderabad, Hyderabad 500 046, India
| | - Brian A. Korgel
- McKetta
Department of Chemical Engineering and Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712-1062, United States
| | - Chih-Jen Shih
- Institute
for Chemical and Bioengineering, Department of Chemistry and Applied
Biosciences, ETH-Zurich, CH-8093 Zürich, Switzerland
| | - Daniel R. Gamelin
- Department
of Chemistry, University of Washington, Seattle, Washington 98195, United States
| | - Dong Hee Son
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Haibo Zeng
- MIIT Key
Laboratory of Advanced Display Materials and Devices, Institute of
Optoelectronics & Nanomaterials, College of Materials Science
and Engineering, Nanjing University of Science
and Technology, Nanjing 210094, China
| | - Haizheng Zhong
- Beijing
Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems,
School of Materials Science & Engineering, Beijing Institute of Technology, 5 Zhongguancun South Street, Haidian
District, Beijing 100081, China
| | - Handong Sun
- Division
of Physics and Applied Physics, School of Physical and Mathematical
Sciences, Nanyang Technological University, Singapore 637371
- Centre
for Disruptive Photonic Technologies (CDPT), Nanyang Technological University, Singapore 637371
| | - Hilmi Volkan Demir
- LUMINOUS!
Center of Excellence for Semiconductor Lighting and Displays, TPI-The
Photonics Institute, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798
- Division
of Physics and Applied Physics, School of Physical and Mathematical
Sciences, Nanyang Technological University, Singapore 639798
- Department
of Electrical and Electronics Engineering, Department of Physics,
UNAM-Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800, Turkey
| | - Ivan G. Scheblykin
- Chemical
Physics and NanoLund Lund University, PO Box 124, 22100 Lund, Sweden
| | - Iván Mora-Seró
- Institute
of Advanced Materials (INAM), Universitat
Jaume I, 12071 Castelló, Spain
| | - Jacek K. Stolarczyk
- Chair for
Photonics and Optoelectronics, Nano-Institute Munich, Department of
Physics, Ludwig-Maximilians-Universität
(LMU), Königinstrasse 10, 80539 Munich, Germany
| | - Jin Z. Zhang
- Department
of Chemistry and Biochemistry, University
of California, Santa Cruz, California 95064, United States
| | - Jochen Feldmann
- Chair for
Photonics and Optoelectronics, Nano-Institute Munich, Department of
Physics, Ludwig-Maximilians-Universität
(LMU), Königinstrasse 10, 80539 Munich, Germany
| | - Johan Hofkens
- Department
of Chemistry, KU Leuven, 3001 Leuven, Belgium
- Max Planck
Institute for Polymer Research, Mainz 55128, Germany
| | - Joseph M. Luther
- National
Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | - Julia Pérez-Prieto
- Institute
of Molecular Science, University of Valencia, c/Catedrático José
Beltrán 2, Paterna, Valencia 46980, Spain
| | - Liang Li
- School
of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Liberato Manna
- Nanochemistry
Department, Istituto Italiano di Tecnologia, Via Morego 30, Genova 16163, Italy
| | - Maryna I. Bodnarchuk
- Institute
of Inorganic Chemistry and § Institute of Chemical and Bioengineering,
Department of Chemistry and Applied Bioscience, ETH Zurich, Vladimir
Prelog Weg 1, CH-8093 Zürich, Switzerland
- Laboratory
for Thin Films and Photovoltaics, Empa−Swiss
Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Maksym V. Kovalenko
- Institute
of Inorganic Chemistry and § Institute of Chemical and Bioengineering,
Department of Chemistry and Applied Bioscience, ETH Zurich, Vladimir
Prelog Weg 1, CH-8093 Zürich, Switzerland
- Laboratory
for Thin Films and Photovoltaics, Empa−Swiss
Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | | | - Narayan Pradhan
- School
of Materials Sciences, Indian Association
for the Cultivation of Science, Kolkata 700032, India
| | - Omar F. Mohammed
- Advanced
Membranes and Porous Materials Center, King
Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
- KAUST Catalysis
Center, King Abdullah University of Science
and Technology, Thuwal 23955-6900, Kingdom of Saudi
Arabia
| | - Osman M. Bakr
- Division
of Physical Science and Engineering, King
Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
- Advanced
Membranes and Porous Materials Center, King
Abdullah University of Science and Technology, Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Peidong Yang
- Department
of Chemistry, University of California,
Berkeley, Berkeley, California 94720, United States
- Materials
Sciences Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720, United States
- Department
of Materials Science and Engineering, University
of California, Berkeley, California 94720, United States
- Kavli
Energy NanoScience Institute, Berkeley, California 94720, United States
| | - Peter Müller-Buschbaum
- Lehrstuhl
für Funktionelle Materialien, Physik Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
- Heinz Maier-Leibnitz
Zentrum (MLZ), Technische Universität
München, Lichtenbergstr. 1, D-85748 Garching, Germany
| | - Prashant V. Kamat
- Notre Dame
Radiation Laboratory, Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Qiaoliang Bao
- Department
of Materials Science and Engineering and ARC Centre of Excellence
in Future Low-Energy Electronics Technologies (FLEET), Monash University, Clayton, Victoria 3800, Australia
| | - Qiao Zhang
- Institute
of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory
for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, China
| | - Roman Krahne
- Istituto
Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Raquel E. Galian
- School
of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Samuel D. Stranks
- Cavendish
Laboratory, University of Cambridge, 19 JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
- Department
of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB3 0AS, United Kingdom
| | - Sara Bals
- EMAT, University
of Antwerp, Groenenborgerlaan
171, 2020 Antwerp, Belgium
- NANOlab Center
of Excellence, University of Antwerp, 2020 Antwerp, Belgium
| | - Vasudevanpillai Biju
- Graduate
School of Environmental Science and Research Institute for Electronic
Science, Hokkaido University, Sapporo, Hokkaido 001-0020, Japan
| | - William A. Tisdale
- Department
of Chemical Engineering, Massachusetts Institute
of Technology, Cambridge, Massachusetts 02139, United States
| | - Yong Yan
- Department
of Chemistry and Biochemistry, San Diego
State University, San Diego, California 92182, United States
| | - Robert L. Z. Hoye
- Department
of Materials, Imperial College London, Exhibition Road, London SW7 2AZ, United Kingdom
| | - Lakshminarayana Polavarapu
- Chair for
Photonics and Optoelectronics, Nano-Institute Munich, Department of
Physics, Ludwig-Maximilians-Universität
(LMU), Königinstrasse 10, 80539 Munich, Germany
- CINBIO,
Universidade de Vigo, Materials Chemistry
and Physics group, Departamento de Química Física, Campus Universitario As Lagoas,
Marcosende, 36310 Vigo, Spain
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9
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Tang H, Xu Y, Hu X, Hu Q, Chen T, Jiang W, Wang L, Jiang W. Lead-Free Halide Double Perovskite Nanocrystals for Light-Emitting Applications: Strategies for Boosting Efficiency and Stability. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2004118. [PMID: 33854898 PMCID: PMC8025037 DOI: 10.1002/advs.202004118] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 01/12/2021] [Indexed: 05/09/2023]
Abstract
Lead-free halide double perovskite (HDP) nanocrystals are considered as one of the most promising alternatives to the lead halide perovskite nanocrystals due to their unique characteristics of nontoxicity, robust intrinsic thermodynamic stability, rich and tunable optoelectronic properties. Although lead-free HDP variants with highly efficient emission are synthesized and characterized, the photoluminescent (PL) properties of colloidal HDP nanocrystals still have enormous challenges for application in light-emitting diode (LED) devices due to their intrinsic and surface defects, indirect band, and disallowable optical transitions. Herein, recent progress on the synthetic strategies, ligands passivation, and metal doping/alloying for boosting efficiency and stability of HDP nanocrystals is comprehensive summarized. It begins by introducing the crystalline structure, electronic structure, and PL mechanism of lead-free HDPs. Next, the limiting factors on PL properties and origins of instability are analyzed, followed by highlighting the effects of synthesis strategies, ligands passivation, and metal doping/alloying on the PL properties and stability of the HDPs. Then, their preliminary applications for LED devices are emphasized. Finally, the challenges and prospects concerning the development of highly efficient and stable HDP nanocrystals-based LED devices in the future are proposed.
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Affiliation(s)
- Huidong Tang
- School of Material Science and EngineeringJingdezhen Ceramic InstituteJingdezhen333001P. R. China
| | - Yanqiao Xu
- School of Material Science and EngineeringJingdezhen Ceramic InstituteJingdezhen333001P. R. China
| | - Xiaobo Hu
- Engineering Research Center of Advanced Glasses Manufacturing TechnologyMinistry of EducationDonghua UniversityShanghai201620P. R. China
| | - Qing Hu
- School of Material Science and EngineeringJingdezhen Ceramic InstituteJingdezhen333001P. R. China
| | - Ting Chen
- School of Material Science and EngineeringJingdezhen Ceramic InstituteJingdezhen333001P. R. China
- National Engineering Research Center for Domestic and Building CeramicsJingdezhen333001P. R. China
| | - Weihui Jiang
- School of Material Science and EngineeringJingdezhen Ceramic InstituteJingdezhen333001P. R. China
- National Engineering Research Center for Domestic and Building CeramicsJingdezhen333001P. R. China
| | - Lianjun Wang
- Engineering Research Center of Advanced Glasses Manufacturing TechnologyMinistry of EducationDonghua UniversityShanghai201620P. R. China
- National Engineering Research Center for Domestic and Building CeramicsJingdezhen333001P. R. China
| | - Wan Jiang
- Engineering Research Center of Advanced Glasses Manufacturing TechnologyMinistry of EducationDonghua UniversityShanghai201620P. R. China
- National Engineering Research Center for Domestic and Building CeramicsJingdezhen333001P. R. China
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10
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Liu DS, Wu J, Xu H, Wang Z. Emerging Light-Emitting Materials for Photonic Integration. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2003733. [PMID: 33306201 DOI: 10.1002/adma.202003733] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 07/26/2020] [Indexed: 06/12/2023]
Abstract
The arrival of the information explosion era is urging the development of large-bandwidth high-data-rate optical interconnection technology. Up to now, the biggest stumbling block in optical interconnections has been the lack of efficient light sources despite significant progress that has been made in germanium-on-silicon (Ge-on-Si) and III-V-on-silicon (III-V-on-Si) lasers. 2D materials and metal halide perovskites have attracted much attention in recent years, and exhibit distinctive advantages in the application of on-chip light emitters. Herein, this Progress Report reviews the recent progress made in light-emitting materials with a focus on new materials, i.e., 2D materials and metal halide perovskites. The report briefly introduces the current status of Ge-on-Si and III-V-on-Si lasers and discusses the advances of 2D and perovskite light-emitting materials for photonic integration, including their optical properties, preparation methods, as well as the light sources based on these materials. Finally, challenges and perspectives of these emerging materials on the way to the efficient light sources are discussed.
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Affiliation(s)
- De-Sheng Liu
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, China
| | - Jiang Wu
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, China
| | - Hongxing Xu
- School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Zhiming Wang
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, China
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11
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Rossi D, Qiao T, Liu X, Khurana M, Akimov AV, Cheon J, Son DH. Size-dependent dark exciton properties in cesium lead halide perovskite quantum dots. J Chem Phys 2020; 153:184703. [DOI: 10.1063/5.0027972] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Daniel Rossi
- Center for NanoMedicine, Institute for Basic Science (IBS), Seoul 03722, South Korea
| | - Tian Qiao
- Department of Chemistry, Texas A&M University, College Station, Texas 777843, USA
| | - Xiaohan Liu
- Department of Physics, Texas A&M University, College Station, Texas 777843, USA
| | - Mohit Khurana
- Department of Physics, Texas A&M University, College Station, Texas 777843, USA
| | - Alexey V. Akimov
- Department of Physics, Texas A&M University, College Station, Texas 777843, USA
- Russian Quantum Center, Skolkovo, Moscow 143025, Russia
- PN Lebedev Institute RAS, Moscow 119991, Russia
| | - Jinwoo Cheon
- Center for NanoMedicine, Institute for Basic Science (IBS), Seoul 03722, South Korea
- Department of Chemistry, Yonsei University, Seoul 03722, South Korea
- Graduate Program of Nano Biomedical Engineering (BME), Advanced Science Institute, Yonsei University, Seoul 03722, South Korea
| | - Dong Hee Son
- Center for NanoMedicine, Institute for Basic Science (IBS), Seoul 03722, South Korea
- Department of Chemistry, Texas A&M University, College Station, Texas 777843, USA
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12
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Schmitz F, Guo K, Horn J, Sorrentino R, Conforto G, Lamberti F, Brescia R, Drago F, Prato M, He Z, Giovanella U, Cacialli F, Schlettwein D, Meggiolaro D, Gatti T. Lanthanide-Induced Photoluminescence in Lead-Free Cs 2AgBiBr 6 Bulk Perovskite: Insights from Optical and Theoretical Investigations. J Phys Chem Lett 2020; 11:8893-8900. [PMID: 32996314 DOI: 10.1021/acs.jpclett.0c02317] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Emphasis was recently placed on the Cs2AgBiBr6 double perovskite as a possible candidate to substitute toxic lead in metal halide perovskites. However, its poor light-emissive features currently make it unsuitable for solid-state lighting. Lanthanide doping is an established strategy to implement luminescence in poorly emissive materials, with the additional advantage of fine-tuning the emission wavelength. We discuss here the impact of Eu and Yb doping on the optical properties of Cs2AgBiBr6 thin films, obtained from the solution processing of hydrothermally synthesized bulk crystalline powders, by combining experiments and density functional theory calculations. Eu(III) incorporation does not lead to the characteristic 5D0 → 7F2 emission feature at 2 eV, while only a weak trap-assisted sub-band gap radiative emission is reported. Oppositely, we demonstrate that incorporated Yb(III) leads to an intense and exclusive photoluminescence emission in the near-infrared as a result of the efficient sensitization of the lanthanide 2F5/2 → 2F7/2 transition.
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Affiliation(s)
- Fabian Schmitz
- Center for Materials Research (LaMa), Justus Liebig University, Heinrich Buff Ring 16, 35392 Giessen, Germany
- Institute of Physical Chemistry, Justus Liebig University, Heinrich Buff Ring 17, 35392 Giessen, Germany
| | - Kunping Guo
- Department of Physics and Astronomy and London Center for Nanotechnology, University College London, WC1E 6BT London, United Kingdom
| | - Jonas Horn
- Center for Materials Research (LaMa), Justus Liebig University, Heinrich Buff Ring 16, 35392 Giessen, Germany
- Institute of Applied Physics, Justus Liebig University, Heinrich-Buff-Ring 16, 35392 Giessen, Germany
| | - Roberto Sorrentino
- Istituto CNR di Scienze e Tecnologie Chimiche "Giulio Natta", Via Corti 12, 20133 Milano, Italy
| | - Gioele Conforto
- Institute of Physical Chemistry, Justus Liebig University, Heinrich Buff Ring 17, 35392 Giessen, Germany
- Institute of Applied Physics, Justus Liebig University, Heinrich-Buff-Ring 16, 35392 Giessen, Germany
| | - Francesco Lamberti
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Rosaria Brescia
- Electron Microscopy Facility, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
| | - Filippo Drago
- Materials Characterization Facility, Istituto Italiano di Tecnologiass, via Morego 30, 16163 Genova, Italy
| | - Mirko Prato
- Materials Characterization Facility, Istituto Italiano di Tecnologiass, via Morego 30, 16163 Genova, Italy
| | - Zhubing He
- Department of Materials Science and Engineering, Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation, Southern University of Science and Technology, No. 1088, Xueyuan Rd., 518055 Shenzhen, Guangdong, China
| | - Umberto Giovanella
- Istituto CNR di Scienze e Tecnologie Chimiche "Giulio Natta", Via Corti 12, 20133 Milano, Italy
| | - Franco Cacialli
- Department of Physics and Astronomy and London Center for Nanotechnology, University College London, WC1E 6BT London, United Kingdom
| | - Derck Schlettwein
- Center for Materials Research (LaMa), Justus Liebig University, Heinrich Buff Ring 16, 35392 Giessen, Germany
- Institute of Applied Physics, Justus Liebig University, Heinrich-Buff-Ring 16, 35392 Giessen, Germany
| | - Daniele Meggiolaro
- Computational Laboratory for Hybrid/Organic Photovoltaics, Istituto CNR di Scienze e Tecnologie Chimiche "Giulio Natta", Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Teresa Gatti
- Center for Materials Research (LaMa), Justus Liebig University, Heinrich Buff Ring 16, 35392 Giessen, Germany
- Institute of Physical Chemistry, Justus Liebig University, Heinrich Buff Ring 17, 35392 Giessen, Germany
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13
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Palei M, Imran M, Biffi G, Manna L, Di Stasio F, Krahne R. Robustness to High Temperatures of Al 2O 3-Coated CsPbBr 3 Nanocrystal Thin Films with High-Photoluminescence Quantum Yield for Light Emission. ACS APPLIED NANO MATERIALS 2020; 3:8167-8175. [PMID: 33817562 PMCID: PMC8009476 DOI: 10.1021/acsanm.0c01525] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 07/16/2020] [Indexed: 05/02/2023]
Abstract
Lead-halide perovskite nanocrystals are a promising material in optical devices due to their high photoluminescence (PL) quantum yield, excellent color purity, and low stimulated emission threshold. However, one problem is the stability of the nanocrystal films under different environmental conditions and under high temperatures. The latter is particularly relevant for device fabrication if further processes that require elevated temperatures are needed after the deposition of the nanocrystal film. In this work, we study the impact of a thin oxide layer of Al2O3 on the light emission properties of thin nanocrystal films. We find that nanocrystals passivated with quaternary ammonium bromide ligands maintain their advantageous optical properties in alumina-coated films and do not suffer from degradation at temperatures up to 100 °C. This is manifested by conservation of the PL peak position and line width, PL decay dynamics, and low threshold for amplified spontaneous emission. The PL remains stable for up to 100 h at a temperature of 80 °C, and the ASE intensity decreases by less than 30% under constant pumping at high fluence for 1 h. Our approach outlines that the combination of tailored surface chemistry with additional protective coating of the nanocrystal film is a feasible approach to obtain stable emission at elevated temperatures and under extended operational time scales.
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Affiliation(s)
- Milan Palei
- Istituto
Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Muhammad Imran
- Istituto
Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Giulia Biffi
- Istituto
Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
- Dipartimento
di Chimica e Chimica Industriale, Università
degli Studi di Genova, Via Dodecaneso, 31, 16146 Genova, Italy
| | - Liberato Manna
- Istituto
Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | | | - Roman Krahne
- Istituto
Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
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14
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Cheng OHC, Qiao T, Sheldon M, Son DH. Size- and temperature-dependent photoluminescence spectra of strongly confined CsPbBr 3 quantum dots. NANOSCALE 2020; 12:13113-13118. [PMID: 32584332 DOI: 10.1039/d0nr02711a] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Lead-halide perovskite nanocrystals (NCs) are receiving much attention as a potential high-quality source of photons due to their superior luminescence properties in comparison to other semiconductor NCs. To date, research has focused mostly on NCs with little or no quantum confinement. Here, we measured the size- and temperature-dependent photoluminescence (PL) from strongly confined CsPbBr3 quantum dots (QDs) with highly uniform size distributions, and examined the factors determining the evolution of the energy and linewidth of the PL with varying temperature and QD size. Compared to the extensively studied II-VI QDs, the spectral position of PL from CsPbBr3 QDs shows an opposite dependence on temperature, with weaker dependence overall. On the other hand, the PL linewidth is much more sensitive to the temperature and size of the QDs compared to II-VI QDs, indicating much stronger coupling of excitons to the vibrational degrees of freedom both in the lattice and at the surface of the QDs.
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15
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Chen F, Boopathi KM, Imran M, Lauciello S, Salerno M. Thiocyanate-Treated Perovskite-Nanocrystal-Based Light-Emitting Diodes with Insight in Efficiency Roll-Off. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E367. [PMID: 31941026 PMCID: PMC7014121 DOI: 10.3390/ma13020367] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 01/06/2020] [Accepted: 01/10/2020] [Indexed: 11/16/2022]
Abstract
Light emitting diodes (LED) based on halide perovskite nanocrystals (NC) have received widespread attention in recent years. In particular, LEDs based on CsPbBr3 NCs were the object of special interest. Here, we report for the first time green LED based on CsPbBr3 NCs treated with ammonium thiocyanate solution before purification with polar solvent. The champion device fabricated based on the treated CsPbBr3 NCs showed high efficiency and high stability during operation as well as during storage. A study on morphology and current distribution of NC films under applied voltages was carried out by conductive atomic force microscopy, giving a hint on efficiency roll-off. The current work provides a facile way to treat sensitive perovskite NCs and to fabricate perovskite NC-based LED with high stability. Moreover, the results shed new light on the relation between film morphology and device performance and on the possible mechanism of efficiency roll-off in NC LED.
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Affiliation(s)
- Fang Chen
- Optoelectronics, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy;
- Dipartimento di Chimica e Chimica Industriale, Università degli Studi di Genova, via Dodecaneso 31, 16146 Genova, Italy
| | - Karunakara Moorthy Boopathi
- Nanochemistry Department, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy; (K.M.B.); (M.I.); (S.L.)
| | - Muhammad Imran
- Nanochemistry Department, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy; (K.M.B.); (M.I.); (S.L.)
| | - Simone Lauciello
- Nanochemistry Department, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy; (K.M.B.); (M.I.); (S.L.)
| | - Marco Salerno
- Materials Characterization Facility, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
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16
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Li Z, Kang Q, Chen L, Zhang B, Zou G, Shen D. Enhancing aqueous stability and radiative-charge-transfer efficiency of CsPbBr3 perovskite nanocrystals via conductive silica gel coating. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2019.135332] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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