151
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Bodnarchuk M, Boehme SC, ten Brinck S, Bernasconi C, Shynkarenko Y, Krieg F, Widmer R, Aeschlimann B, Günther D, Kovalenko MV, Infante I. Rationalizing and Controlling the Surface Structure and Electronic Passivation of Cesium Lead Halide Nanocrystals. ACS ENERGY LETTERS 2019; 4:63-74. [PMID: 30662955 PMCID: PMC6333230 DOI: 10.1021/acsenergylett.8b01669] [Citation(s) in RCA: 170] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 11/27/2018] [Indexed: 05/03/2023]
Abstract
Colloidal lead halide perovskite nanocrystals (NCs) have recently emerged as versatile photonic sources. Their processing and luminescent properties are challenged by the lability of their surfaces, i.e., the interface of the NC core and the ligand shell. On the example of CsPbBr3 NCs, we model the nanocrystal surface structure and its effect on the emergence of trap states using density functional theory. We rationalize the typical observation of a degraded luminescence upon aging or the luminescence recovery upon postsynthesis surface treatments. The conclusions are corroborated by the elemental analysis. We then propose a strategy for healing the surface trap states and for improving the colloidal stability by the combined treatment with didodecyldimethylammonium bromide and lead bromide and validate this approach experimentally. This simple procedure results in robust colloids, which are highly pure and exhibit high photoluminescence quantum yields of up to 95-98%, retained even after three to four rounds of washing.
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Affiliation(s)
- Maryna
I. Bodnarchuk
- Empa
− Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Simon C. Boehme
- Department
of Theoretical Chemistry, Faculty of Science, Vrije Universiteit Amsterdam, de Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Stephanie ten Brinck
- Department
of Theoretical Chemistry, Faculty of Science, Vrije Universiteit Amsterdam, de Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Caterina Bernasconi
- Empa
− Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
- Institute
of Inorganic Chemistry, Department of Chemistry and Applied Bioscience, ETH Zürich, Vladimir Prelog Weg 1, CH-8093 Zürich, Switzerland
| | - Yevhen Shynkarenko
- Empa
− Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
- Institute
of Inorganic Chemistry, Department of Chemistry and Applied Bioscience, ETH Zürich, Vladimir Prelog Weg 1, CH-8093 Zürich, Switzerland
| | - Franziska Krieg
- Empa
− Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
- Institute
of Inorganic Chemistry, Department of Chemistry and Applied Bioscience, ETH Zürich, Vladimir Prelog Weg 1, CH-8093 Zürich, Switzerland
| | - Roland Widmer
- Empa
− Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Beat Aeschlimann
- Institute
of Inorganic Chemistry, Department of Chemistry and Applied Bioscience, ETH Zürich, Vladimir Prelog Weg 1, CH-8093 Zürich, Switzerland
| | - Detlef Günther
- Institute
of Inorganic Chemistry, Department of Chemistry and Applied Bioscience, ETH Zürich, Vladimir Prelog Weg 1, CH-8093 Zürich, Switzerland
| | - Maksym V. Kovalenko
- Empa
− Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
- Institute
of Inorganic Chemistry, Department of Chemistry and Applied Bioscience, ETH Zürich, Vladimir Prelog Weg 1, CH-8093 Zürich, Switzerland
- M. V. Kovalenko. E-mail:
| | - Ivan Infante
- Department
of Theoretical Chemistry, Faculty of Science, Vrije Universiteit Amsterdam, de Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
- I. Infante. E-mail:
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152
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Wei Y, Cheng Z, Lin J. An overview on enhancing the stability of lead halide perovskite quantum dots and their applications in phosphor-converted LEDs. Chem Soc Rev 2019; 48:310-350. [PMID: 30465675 DOI: 10.1039/c8cs00740c] [Citation(s) in RCA: 364] [Impact Index Per Article: 72.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Beyond the unprecedented success achieved in photovoltaics (PVs), lead halide perovskites (LHPs) have shown great potential in other optoelectronic devices. Among them, nanometer-scale perovskite quantum dots (PQDs) with fascinating optical properties including high brightness, tunable emission wavelength, high color purity, and high defect tolerance have been regarded as promising alternative down-conversion materials in phosphor-converted light-emitting diodes (pc-LEDs) for lighting and next-generation of display technology. Despite the promising applications of perovskite materials in various fields, they have received strong criticism for the lack of stability. The poor stability has also attracted much attention. Within a few years, numerous strategies towards enhancing the stability have been developed. This review summarizes the mechanisms of intrinsic- and extrinsic-environment-induced decomposition of PQDs. Simultaneously, the strategies for improving the stability of PQDs are reviewed in detail, which can be classified into four types: (1) compositional engineering; (2) surface engineering; (3) matrix encapsulation; (4) device encapsulation. Finally, the challenges for applying PQDs in pc-LEDs are highlighted, and some possible solutions to improve the stability of PQDs together with suggestions for further improving the performance of pc-LEDs as well as the device lifetime are provided.
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Affiliation(s)
- Yi Wei
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.
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153
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Ding Y, Li T, Li X, Tsiwah EA, Liu C, Gao P, Zeng T, Chen Y, Zhao X, Xie Y. Tin-assisted growth of all-inorganic perovskite nanoplatelets with controllable morphologies and complementary emissions. CrystEngComm 2019. [DOI: 10.1039/c9ce00027e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Sn4+-assisted growth of CsPbBr3 nanoplatelets with the quantum confinement effect enables controllable morphologies and formation of dual photoluminescence emission.
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Affiliation(s)
- Yanxi Ding
- State Key Laboratory of Silicate Materials for Architectures
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
| | - Tan Li
- State Key Laboratory of Silicate Materials for Architectures
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
| | - Xiaoyun Li
- State Key Laboratory of Silicate Materials for Architectures
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
| | - Emmanuel Acheampong Tsiwah
- State Key Laboratory of Silicate Materials for Architectures
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
| | - Chengzhen Liu
- State Key Laboratory of Silicate Materials for Architectures
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
| | - Peng Gao
- Laboratory of Advanced Functional Materials
- Xiamen Institute of Rare-earth Materials, Chinese Academy of Science
- Xiamen
- P.R. China
| | - Tao Zeng
- School of Materials Science and Engineering
- Jingdezhen Ceramic Institute (Xianghu Campus)
- Jingdezhen
- P.R. China
| | - Yunxia Chen
- School of Materials Science and Engineering
- Jingdezhen Ceramic Institute (Xianghu Campus)
- Jingdezhen
- P.R. China
- National Engineering Research Center for Domestic & Building Ceramics
| | - Xiujian Zhao
- State Key Laboratory of Silicate Materials for Architectures
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
| | - Yi Xie
- State Key Laboratory of Silicate Materials for Architectures
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
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154
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Yang X, Gu H, Li S, Li J, Shi H, Zhang J, Liu N, Liao Z, Xu W, Tan Y. Improved photoelectric performance of all-inorganic perovskite through different additives for green light-emitting diodes. RSC Adv 2019; 9:34506-34511. [PMID: 35529996 PMCID: PMC9073914 DOI: 10.1039/c9ra05053a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 10/18/2019] [Indexed: 11/21/2022] Open
Abstract
Improving the performance of all-inorganic CsPbBr3–PEO–PVP-based LEDs with the structure of ITO/PEDOT:PSS/Perovskite/TPBI/LiF/Al.
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Affiliation(s)
- Xianqi Yang
- Institute of Semiconductor Science and Technology
- South China Normal University
- Guangzhou
- China
| | - Huaimin Gu
- Institute of Semiconductor Science and Technology
- South China Normal University
- Guangzhou
- China
| | - Shuti Li
- Institute of Semiconductor Science and Technology
- South China Normal University
- Guangzhou
- China
| | - Jihang Li
- Institute of Semiconductor Science and Technology
- South China Normal University
- Guangzhou
- China
| | - Hengzhi Shi
- Institute of Semiconductor Science and Technology
- South China Normal University
- Guangzhou
- China
| | - Jinyuan Zhang
- Institute of Semiconductor Science and Technology
- South China Normal University
- Guangzhou
- China
| | - Nana Liu
- Institute of Semiconductor Science and Technology
- South China Normal University
- Guangzhou
- China
| | - Zebing Liao
- Institute of Semiconductor Science and Technology
- South China Normal University
- Guangzhou
- China
| | - Wenzhu Xu
- Institute of Semiconductor Science and Technology
- South China Normal University
- Guangzhou
- China
| | - Yuan Tan
- Institute of Semiconductor Science and Technology
- South China Normal University
- Guangzhou
- China
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155
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Behera RK, Das Adhikari S, Dutta SK, Dutta A, Pradhan N. Blue-Emitting CsPbCl 3 Nanocrystals: Impact of Surface Passivation for Unprecedented Enhancement and Loss of Optical Emission. J Phys Chem Lett 2018; 9:6884-6891. [PMID: 30475626 DOI: 10.1021/acs.jpclett.8b03047] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
High-energy-emitting CsPbCl3 nanocrystals have shown significant loss and enhancement of their emission intensity (∼40-50 folds) during purification and surface treatments, respectively. This confirms that the surfaces of these nanocrystals are very sensitive. In this Letter, physical insights of the interface bindings on the surface of these blue-emitting CsPbCl3 nanocrystals with different passivating agents and their consequential impact on purification are investigated. Using various metal chlorides irrespective of the charge and size of the metal ions, metal acetates, and nonmetal chloride, the predominant influence of chloride ions in helping retrieve/intensify the blue emission is established. The purification processes are observed to be very delicate, and successive purifications with introduction of polar nonsolvents led to the transformation of an emitting cubic CsPbCl3 phase to nonemitting tetragonal CsPb2Cl5 phase nanocrystals irreversibly. The impact of various salt additions only temporarily helped in enhancing the emission, but the phase change remained inevitable upon successive purification. However, as a remedy, by in situ use of alkylammonium chloride salt in high-temperature reactions, the surface binding was improved, and significant emission as well as the phase could be retained with successive purifications.
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Affiliation(s)
- Rakesh Kumar Behera
- School of Materials Science , Indian Association for the Cultivation of Science , Kolkata 700032 , India
| | - Samrat Das Adhikari
- School of Materials Science , Indian Association for the Cultivation of Science , Kolkata 700032 , India
| | - Sumit Kumar Dutta
- School of Materials Science , Indian Association for the Cultivation of Science , Kolkata 700032 , India
| | - Anirban Dutta
- School of Materials Science , Indian Association for the Cultivation of Science , Kolkata 700032 , India
| | - Narayan Pradhan
- School of Materials Science , Indian Association for the Cultivation of Science , Kolkata 700032 , India
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156
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Lou S, Xuan T, Liang Q, Huang J, Cao L, Yu C, Cao M, Xia C, Wang J, Zhang D, Li H. Controllable and facile synthesis of CsPbBr 3-Cs 4PbBr 6 perovskite composites in pure polar solvent. J Colloid Interface Sci 2018; 537:384-388. [PMID: 30458348 DOI: 10.1016/j.jcis.2018.11.041] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 11/09/2018] [Accepted: 11/12/2018] [Indexed: 11/28/2022]
Abstract
Here, we present a single atomic supersaturated recrystallization method to synthesize the green-emitting CsPbBr3-Cs4PbBr6 perovskite composites in solid state with the highest PLQY of 40.8% in pure polar solvent. The component, morphology, and optical properties of the microcrystals can be tuned by varying growth time, the content of ammonium bromide, and bromine source. The developed method provides a new route to large-scale synthesize high quality perovskite composites emitters for light-emitting diodes.
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Affiliation(s)
- Sunqi Lou
- Engineering Research Centre for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Materials Science, East China Normal University, Shanghai 200062, China; Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Tongtong Xuan
- Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China.
| | - Qiongyun Liang
- Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Junjian Huang
- Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Luyu Cao
- Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Caiyan Yu
- Engineering Research Centre for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Materials Science, East China Normal University, Shanghai 200062, China
| | - Mengmeng Cao
- Engineering Research Centre for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Materials Science, East China Normal University, Shanghai 200062, China
| | - Chao Xia
- Engineering Research Centre for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Materials Science, East China Normal University, Shanghai 200062, China
| | - Jing Wang
- Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Dafeng Zhang
- School of Materials Science and Engineering, Liaocheng University, Liaocheng, Shandong 252000, China
| | - Huili Li
- Engineering Research Centre for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Materials Science, East China Normal University, Shanghai 200062, China.
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157
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Li Z, Xu J, Zhou S, Zhang B, Liu X, Dai S, Yao J. CsBr-Induced Stable CsPbI 3- xBr x ( x < 1) Perovskite Films at Low Temperature for Highly Efficient Planar Heterojunction Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2018; 10:38183-38192. [PMID: 30360115 DOI: 10.1021/acsami.8b11474] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
All-inorganic cesium lead perovskites have emerged as alternative absorbing layers in solar cells owing to their superb thermal stability compared with the organic-inorganic hybrid perovskites. However, the desired cubic CsPbI3 phase forms at a high temperature and suffers from a phase transition to the orthorhombic yellow phase at room temperature. A developed nonstoichiometric method is applied to fabricate CsPbI3- xBr x ( x < 1) films by adding excess CsBr into the precursor solution. The excess CsBr in the precursor solution helps to produce a microstrain in the lattice to stabilize the cubic CsPbI3 phase at low temperature and incorporate a small part of Br- into the CsPbI3 lattice. At the optimal CsBr concentration (0.5 M), the corresponding solar cell achieves a power conversion efficiency of 10.92%. This work provides an effective way to stabilize the cubic CsPbI3- xBr x ( x < 1) phase at low temperature to further improve the performance of all-inorganic perovskite solar cells.
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158
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Han W, Cui F, Si Y, Mao X, Ding B, Kim H. Self-Assembly of Perovskite Crystals Anchored Al 2 O 3 -La 2 O 3 Nanofibrous Membranes with Robust Flexibility and Luminescence. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1801963. [PMID: 30204281 DOI: 10.1002/smll.201801963] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 08/03/2018] [Indexed: 06/08/2023]
Abstract
Inorganic luminescent materials as one of the important high-performance materials are widely used for industry and scientific research, mainly owing to their outstanding luminescence properties. However, inorganic luminescent materials are typically brittle and inelastic, which greatly limit their use in practical applications, particularly in flexible optoelectronic devices. In this work, it is shown that "plum-pudding" like CsPbBr3 /Cs4 PbBr6 perovskite crystals anchor onto Al2 O3 -La2 O3 (CCAL) nanofibrous membranes, which are synthesized via a facile electrospinning and subsequent supersaturated recrystallization process. The as-synthesized CCAL membranes exhibit outstanding mechanical flexibility and luminescence properties. Meanwhile, the crystal structure and luminous performance of the CCAL membranes are regulated by different molar ratios of CsBr/PbBr2 . The photoluminescence reaches a maximum value for the CCAL membranes produced with a CsBr/PbBr2 ratio of 1, and shows a narrow emission line-width of 18 nm. Furthermore, the potential applications of the CCAL nanofibrous membranes in green light devices through a remote nanofibrous membranes packaging approach are demonstrated. A pure green emission is achieved with the Commission Internationale de L'Eclairage color coordinates of (0.28, 0.65). This facile strategy would open a new avenue to flexible inorganic luminescent materials for the lighting and backlight display industries.
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Affiliation(s)
- Weidong Han
- Department of BIN Convergence Technology, Chonbuk National University, Jeonju, 561-756, South Korea
- Key Laboratory of Textile Science and Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Fuhai Cui
- Department of BIN Convergence Technology, Chonbuk National University, Jeonju, 561-756, South Korea
| | - Yang Si
- Key Laboratory of Textile Science and Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Xue Mao
- School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an, 710048, China
| | - Bin Ding
- Key Laboratory of Textile Science and Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, 201620, China
| | - Hakyong Kim
- Department of BIN Convergence Technology, Chonbuk National University, Jeonju, 561-756, South Korea
- Department of Organic Materials and Fiber Engineering, Chonbuk National University, Jeonju, 561-756, South Korea
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159
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Ma Z, Liu Z, Lu S, Wang L, Feng X, Yang D, Wang K, Xiao G, Zhang L, Redfern SAT, Zou B. Pressure-induced emission of cesium lead halide perovskite nanocrystals. Nat Commun 2018; 9:4506. [PMID: 30374042 PMCID: PMC6206024 DOI: 10.1038/s41467-018-06840-8] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 09/21/2018] [Indexed: 12/24/2022] Open
Abstract
Metal halide perovskites (MHPs) are of great interest for optoelectronics because of their high quantum efficiency in solar cells and light-emitting devices. However, exploring an effective strategy to further improve their optical activities remains a considerable challenge. Here, we report that nanocrystals (NCs) of the initially nonfluorescent zero-dimensional (0D) cesium lead halide perovskite Cs4PbBr6 exhibit a distinct emission under a high pressure of 3.01 GPa. Subsequently, the emission intensity of Cs4PbBr6 NCs experiences a significant increase upon further compression. Joint experimental and theoretical analyses indicate that such pressure-induced emission (PIE) may be ascribed to the enhanced optical activity and the increased binding energy of self-trapped excitons upon compression. This phenomenon is a result of the large distortion of [PbBr6]4- octahedral motifs resulting from a structural phase transition. Our findings demonstrate that high pressure can be a robust tool to boost the photoluminescence efficiency and provide insights into the relationship between the structure and optical properties of 0D MHPs under extreme conditions.
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Affiliation(s)
- Zhiwei Ma
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, China
| | - Zhun Liu
- Key Laboratory of Automobile Materials of MOE, and School of Materials Science, Jilin University, Changchun, 130012, China
| | - Siyu Lu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - Lingrui Wang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, China
| | - Xiaolei Feng
- Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ, UK.,Center for High Pressure Science and Technology Advanced Research, Shanghai, 201203, China
| | - Dongwen Yang
- Key Laboratory of Automobile Materials of MOE, and School of Materials Science, Jilin University, Changchun, 130012, China
| | - Kai Wang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, China
| | - Guanjun Xiao
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, China.
| | - Lijun Zhang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, China. .,Key Laboratory of Automobile Materials of MOE, and School of Materials Science, Jilin University, Changchun, 130012, China.
| | - Simon A T Redfern
- Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ, UK.,Center for High Pressure Science and Technology Advanced Research, Shanghai, 201203, China
| | - Bo Zou
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, China.
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160
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Yu X, Wu L, Hu H, Chen M, Tan Y, Yang D, Pan Q, Zhong Q, Supasai T, Zhang Q. Cs 4PbX 6 (X = Cl, Br, I) Nanocrystals: Preparation, Water-Triggered Transformation Behavior, and Anti-Counterfeiting Application. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:10363-10370. [PMID: 30092635 DOI: 10.1021/acs.langmuir.8b01683] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
As a promising material, Cs4PbX6 (X = Cl, Br, I) nanocrystals (NCs) have attracted much attention. However, their luminescent property is still under debate. In this work, we first systematically studied the colloidal preparation of Cs4PbX6 NCs. It is found that the critical parameter for the formation of Cs4PbX6 NCs is the ratio between Cs and Pb. Pure Cs4PbX6 NCs are nonluminescent. The luminescence property of previous reported Cs4PbX6 NCs may come from the impurity of luminescent CsPbX3 NCs. No coexistence of both Cs4PbX6 and CsPbX3 phase has been found in one single nanoparticle. The water-triggered transformation from nonluminescent Cs4PbX6 NCs to luminescent CsPbX3 NCs has been quantitatively studied. The potential application of Cs4PbX6 NCs in humidity sensor and anticounterfeiting have been demonstrated. This work is important because it not only confirmed the nonluminescent nature of Cs4PbX6 NCs but also demonstrated the potential application of such NCs.
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Affiliation(s)
- Xiaoya Yu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu 215123 , P. R. China
| | - Linzhong Wu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu 215123 , P. R. China
| | - Huicheng Hu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu 215123 , P. R. China
| | - Min Chen
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu 215123 , P. R. China
| | - Yeshu Tan
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu 215123 , P. R. China
| | - Di Yang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu 215123 , P. R. China
| | - Qi Pan
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu 215123 , P. R. China
| | - Qixuan Zhong
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu 215123 , P. R. China
| | - Thidarat Supasai
- Department of Materials Science, Faculty of Science , Kasetsart University , 50 Ngam Wong Wan Road , Lat Yao, Chatuchak Bangkok 10900 , Thailand
| | - Qiao Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices , Soochow University , Suzhou , Jiangsu 215123 , P. R. China
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161
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Fan Y, Xing H, Zhai Q, Fan D, Li J, Wang E. Chemiluminescence of CsPbBr3 Perovskite Nanocrystal on the Hexane/Water Interface. Anal Chem 2018; 90:11651-11657. [DOI: 10.1021/acs.analchem.8b03249] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Yongchao Fan
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
- University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Huanhuan Xing
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
- University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Qingfeng Zhai
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
- University of the Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Daoqing Fan
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
- University of the Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Jing Li
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
| | - Erkang Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
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162
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Zhong Q, Cao M, Hu H, Yang D, Chen M, Li P, Wu L, Zhang Q. One-Pot Synthesis of Highly Stable CsPbBr 3@SiO 2 Core-Shell Nanoparticles. ACS NANO 2018; 12:8579-8587. [PMID: 30004668 DOI: 10.1021/acsnano.8b04209] [Citation(s) in RCA: 190] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The practical applications of CsPbX3 nanocrystals (NCs) have been limited by their poor stability. Although much effort has been devoted to making core-shell nanostructures to enhance the stability of CsPbX3 NCs, it is still very difficult to coat CsPbX3 NCs with another material on a single-particle level. In this work, we report a facile one-pot approach to synthesize CsPbBr3@SiO2 core-shell nanoparticles (NPs), in which each core-shell NP has only one CsPbBr3 NC. The formation process has been carefully monitored. It has been found that the formation rates, determined by reaction temperature, precursor species, pH value, etc., of both CsPbBr3 and SiO2 are critical for the successful preparation of core-shell NPs. Thanks to the protection of SiO2 shell, the product shows much higher long-term stability in humid air and enhanced stability against ultrasonication treatment in water than that of naked CsPbBr3 NCs. This work not only provides a robust method for the preparation of core-shell nanostructures but also sheds some light on the stabilization and applications of CsPbX3 NCs.
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Affiliation(s)
- Qixuan Zhong
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices , Soochow University , 199 Ren'ai Road , Suzhou 215123 , Jiangsu , People's Republic of China
| | - Muhan Cao
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices , Soochow University , 199 Ren'ai Road , Suzhou 215123 , Jiangsu , People's Republic of China
| | - Huicheng Hu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices , Soochow University , 199 Ren'ai Road , Suzhou 215123 , Jiangsu , People's Republic of China
| | - Di Yang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices , Soochow University , 199 Ren'ai Road , Suzhou 215123 , Jiangsu , People's Republic of China
| | - Min Chen
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices , Soochow University , 199 Ren'ai Road , Suzhou 215123 , Jiangsu , People's Republic of China
| | - Pengli Li
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices , Soochow University , 199 Ren'ai Road , Suzhou 215123 , Jiangsu , People's Republic of China
| | - Linzhong Wu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices , Soochow University , 199 Ren'ai Road , Suzhou 215123 , Jiangsu , People's Republic of China
| | - Qiao Zhang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices , Soochow University , 199 Ren'ai Road , Suzhou 215123 , Jiangsu , People's Republic of China
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163
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Zhang Q, Yin Y. All-Inorganic Metal Halide Perovskite Nanocrystals: Opportunities and Challenges. ACS CENTRAL SCIENCE 2018; 4:668-679. [PMID: 29974062 PMCID: PMC6026778 DOI: 10.1021/acscentsci.8b00201] [Citation(s) in RCA: 138] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Indexed: 05/18/2023]
Abstract
The past decade has witnessed the growing interest in metal halide perovskites as driven by their promising applications in diverse fields. The low intrinsic stability of the early developed organic versions has however hampered their widespread applications. Very recently, all-inorganic perovskite nanocrystals have emerged as a new class of materials that hold great promise for the practical applications in solar cells, photodetectors, light-emitting diodes, and lasers, among others. In this Outlook, we first discuss the recent developments in the preparation, properties, and applications of all-inorganic metal halide perovskite nanocrystals, with a particular focus on CsPbX3, and then provide our view of current challenges and future directions in this emerging area. Our goal is to introduce the current status of this type of new materials to researchers from different areas and motivate them to explore all the potentials.
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Affiliation(s)
- Qiao Zhang
- Institute
of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory
for Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren’ai Road, Suzhou, Jiangsu 215123, People’s
Republic of China
| | - Yadong Yin
- Department
of Chemistry, University of California,
Riverside, Riverside, California 92521, United States
- E-mail:
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164
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Yan A, Guo Y, Liu C, Deng Z, Guo Y, Zhao X. Tuning the Optical Properties of CsPbBr 3 Nanocrystals by Anion Exchange Reactions with CsX Aqueous Solution. NANOSCALE RESEARCH LETTERS 2018; 13:185. [PMID: 29926203 PMCID: PMC6010365 DOI: 10.1186/s11671-018-2592-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 06/05/2018] [Indexed: 05/22/2023]
Abstract
Topotactic anion exchange has been developed to tune the composition and band gap energies of cesium lead halide (CsPbX3) perovskite nanocrystals (NCs). However, current anion exchange methods either require harsh conditions or take a long time to realize substantial substitution. Here, we present a method to modulate the composition of colloidal CsPbBr3 NCs through ultrasonication-assisted anion exchange with CsX (X = Cl, I) solution. Efficient anion exchange of CsPbBr3 NCs with Cl- or I- is realized with substitution ratio up to 93% and preservation of the pristine shape and structure of CsPbBr3 NCs. This anion exchange results in tunable emission, covering the whole visible spectral range, with relatively high photoluminescence quantum yield, narrow emission bandwidths, and good stability. This work provides a facile and efficient way to engineer the properties of halide perovskite NCs and has great potential for large-scale production of compositionally diverse perovskite NCs.
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Affiliation(s)
- Anping Yan
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, 122 Luoshi Road, Hongshan, Wuhan, 430070 China
| | - Yunlan Guo
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, 122 Luoshi Road, Hongshan, Wuhan, 430070 China
| | - Chao Liu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, 122 Luoshi Road, Hongshan, Wuhan, 430070 China
| | - Zhao Deng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Hongshan, Wuhan, 430070 China
| | - Yi Guo
- Materials Research and Test Center, Wuhan University of Technology, 122 Luoshi Road, Hongshan, Wuhan, 430070 China
| | - Xiujian Zhao
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, 122 Luoshi Road, Hongshan, Wuhan, 430070 China
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165
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Zhang Q, Yin Y. Strong photoluminescence of Cs 4PbBr 6 crystals: a long mystery story. Sci Bull (Beijing) 2018; 63:525-526. [PMID: 36658835 DOI: 10.1016/j.scib.2018.04.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Qiao Zhang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, China.
| | - Yadong Yin
- Department of Chemistry, University of California, Riverside, CA 92521, USA.
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166
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Chen S, Lyu D, Ling T, Guo W. Reversible modulation of CsPbBr 3 perovskite nanocrystal/gold nanoparticle heterostructures. Chem Commun (Camb) 2018; 54:4605-4608. [PMID: 29670962 DOI: 10.1039/c8cc01325j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A facile strategy is illustrated to reversibly modulate CsPbBr3 perovskite nanocrystal/Au nanoparticle heterostructures with the reversible formation and fragmentation of gold nanoparticles anchored to the corners and surface of CsPbBr3 perovskite nanocrystals. The modulation process was performed under ambient conditions and could be conducted for cycles.
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Affiliation(s)
- Shanshan Chen
- College of Chemistry, Research Centre for Analytical Sciences, Tianjin Key Laboratory of Molecular Recognition and Biosensing, and State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin 300071, China.
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167
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Akkerman Q, Abdelhady AL, Manna L. Zero-Dimensional Cesium Lead Halides: History, Properties, and Challenges. J Phys Chem Lett 2018; 9:2326-2337. [PMID: 29652149 PMCID: PMC5937914 DOI: 10.1021/acs.jpclett.8b00572] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 04/13/2018] [Indexed: 05/20/2023]
Abstract
Over the past decade, lead halide perovskites (LHPs) have emerged as new promising materials in the fields of photovoltaics and light emission due to their facile syntheses and exciting optical properties. The enthusiasm generated by LHPs has inspired research in perovskite-related materials, including the so-called "zero-dimensional cesium lead halides", which will be the focus of this Perspective. The structure of these materials is formed of disconnected lead halide octahedra that are stabilized by cesium ions. Their optical properties are dominated by optical transitions that are localized within the individual octahedra, hence the title "'zero-dimensional perovskites". Controversial results on their physical properties have recently been reported, and the true nature of their photoluminescence is still unclear. In this Perspective, we will take a close look at these materials, both as nanocrystals and as bulk crystals/thin films, discuss the contrasting opinions on their properties, propose potential applications, and provide an outlook on future experiments.
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Affiliation(s)
- Quinten
A. Akkerman
- Nanochemistry
Department, 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
| | - Ahmed L. Abdelhady
- Nanochemistry
Department, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
- E-mail: (A.L.A.)
| | - Liberato Manna
- Nanochemistry
Department, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
- E-mail: (L.M.)
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168
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Inter-Conversion between Different Compounds of Ternary Cs-Pb-Br System. MATERIALS 2018; 11:ma11050717. [PMID: 29724066 PMCID: PMC5978094 DOI: 10.3390/ma11050717] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 04/18/2018] [Accepted: 05/01/2018] [Indexed: 12/20/2022]
Abstract
The perovskite CsPbBr3 attracts great attention due to its potential in optoelectronics. However, stability remains a major obstacle to achieving its effecting application. In this work, we prepared CsPbBr3 solids through a simple reaction and investigated reversible conversion between CsPbBr3, Cs4PbBr6, and CsPb2Br5. We found that CsPbBr3 can be respectively converted to Cs4PbBr6 or CsPb2Br5 by reacting with CsBr or PbBr2. Thermodynamic analysis demonstrated that the chemical reactions above were exothermic and occurred spontaneously. Moreover, the formed Cs4PbBr6 could be converted to CsPbBr3 reversely, and then progressively converted to Cs-deficient CsPb2Br5 by extraction of CsBr with water. The CsPb2Br5 was converted to CsPbBr3 reversely under thermal annealing at 400 °C. The thermodynamic processes of these conversions between the three compounds above were clarified. Our findings regarding the conversions not only provide a new method for controlled synthesis of the ternary Cs-Pb-Br materials but also clarify the underlying mechanism for the instability of perovskites CsPbBr3.
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169
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Akkerman QA, Rainò G, Kovalenko MV, Manna L. Genesis, challenges and opportunities for colloidal lead halide perovskite nanocrystals. NATURE MATERIALS 2018; 17:394-405. [PMID: 29459748 DOI: 10.1038/s41563-018-0018-4] [Citation(s) in RCA: 771] [Impact Index Per Article: 128.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Accepted: 01/08/2018] [Indexed: 05/18/2023]
Abstract
Lead halide perovskites (LHPs) in the form of nanometre-sized colloidal crystals, or nanocrystals (NCs), have attracted the attention of diverse materials scientists due to their unique optical versatility, high photoluminescence quantum yields and facile synthesis. LHP NCs have a 'soft' and predominantly ionic lattice, and their optical and electronic properties are highly tolerant to structural defects and surface states. Therefore, they cannot be approached with the same experimental mindset and theoretical framework as conventional semiconductor NCs. In this Review, we discuss LHP NCs historical and current research pursuits, challenges in applications, and the related present and future mitigation strategies explored.
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Affiliation(s)
- Quinten A Akkerman
- Nanochemistry Department, Istituto Italiano di Tecnologia, Genova, Italy
- Università degli Studi di Genova, Genova, Italy
| | - Gabriele Rainò
- Institute of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Zürich, Switzerland
- Laboratory for Thin Films and Photovoltaics, Empa-Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland
| | - Maksym V Kovalenko
- Institute of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Zürich, Switzerland.
- Laboratory for Thin Films and Photovoltaics, Empa-Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland.
| | - Liberato Manna
- Nanochemistry Department, Istituto Italiano di Tecnologia, Genova, Italy.
- Kavli Institute of Nanoscience and Department of Chemical Engineering, Delft University of Technology, Delft, the Netherlands.
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170
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Ruan L, Lin J, Shen W, Deng Z. Ligand-mediated synthesis of compositionally related cesium lead halide CsPb 2X 5 nanowires with improved stability. NANOSCALE 2018; 10:7658-7665. [PMID: 29648557 DOI: 10.1039/c8nr00883c] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Compositionally related cesium lead halide materials, such as CsPb2X5, have attracted great interest due to their considerable optoelectronic/optical properties as well as improved stability. Currently, CsPb2Br5 nanocrystals can be well-designed by tuning the ligands or precursor ratio, whereas, CsPb2X5 (with Cl- or I-) nanocrystals can only be obtained by the anion exchange method. Herein, we report a method to directly synthesize CsPb2X5 facilitated by thiol ligands. The morphology of CsPb2X5 can be designed as a nanowire. Importantly, the stability of directly synthesized CsPb2X5 nanowires is much improved when compared with the stabilities of the materials obtained by the anion-exchange method. We believe that this method will promote the application of 1D tetragonal CsPb2X5 in optoelectronics, optics and other fields.
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Affiliation(s)
- Longfei Ruan
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Chemistry for Life Sciences, Nanjing University, Nanjing, Jiangsu 210093, People's Republic of China.
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171
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Li Y, Huang H, Xiong Y, Kershaw SV, Rogach AL. Revealing the Formation Mechanism of CsPbBr3
Perovskite Nanocrystals Produced via a Slowed-Down Microwave-Assisted Synthesis. Angew Chem Int Ed Engl 2018; 57:5833-5837. [DOI: 10.1002/anie.201713332] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Indexed: 11/08/2022]
Affiliation(s)
- 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. China
| | - He Huang
- 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. China
| | - Yuan Xiong
- 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. China
| | - Stephen V. Kershaw
- 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. China
| | - 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. China
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172
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Li Y, Huang H, Xiong Y, Kershaw SV, Rogach AL. Revealing the Formation Mechanism of CsPbBr3
Perovskite Nanocrystals Produced via a Slowed-Down Microwave-Assisted Synthesis. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201713332] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- 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. China
| | - He Huang
- 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. China
| | - Yuan Xiong
- 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. China
| | - Stephen V. Kershaw
- 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. China
| | - 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. China
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173
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Tong G, Li H, Zhu Z, Zhang Y, Yu L, Xu J, Jiang Y. Enhancing Hybrid Perovskite Detectability in the Deep Ultraviolet Region with Down-Conversion Dual-Phase (CsPbBr 3-Cs 4PbBr 6) Films. J Phys Chem Lett 2018; 9:1592-1599. [PMID: 29533622 DOI: 10.1021/acs.jpclett.8b00429] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Hybrid perovskite photodetectors (PDs) exhibit outstanding performance in the ultraviolet-visible (UV-vis) spectrum but have poor detectability in the deep ultraviolet (DUV) region (200-350 nm). In this work, a novel inorganic-hybrid architecture that incorporates a dual-phase (CsPbBr3-Cs4PbBr6) inorganic perovskite material as a down-conversion window layer and a hybrid perovskite as a light capture layer was prepared to achieve faster, highly sensitive photodetection in the DUV spectrum. A dual-phase inorganic perovskite film coated on the back surface of the photodetector enables strong light absorption and tunes the incident energy into emission bands that are optimized for the perovskite photodetector. The presence of Cs4PbBr6 enhances the capture and down-conversion of the incident DUV light. Due to the down-conversion and transport of the DUV photons, a self-driven perovskite photodetector with this composite structure exhibits a fast response time of 7.8/33.6 μs and a high responsivity of 49.4 mA W-1 at 254 nm without extra power supply.
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Affiliation(s)
- Guoqing Tong
- School of Materials Science and Engineering , Hefei University of Technology , Hefei 230009 , People's Republic of China
| | - Huan Li
- School of Materials Science and Engineering , Hefei University of Technology , Hefei 230009 , People's Republic of China
| | - Zhifeng Zhu
- School of Materials Science and Engineering , Hefei University of Technology , Hefei 230009 , People's Republic of China
| | - Yan Zhang
- School of Materials Science and Engineering , Hefei University of Technology , Hefei 230009 , People's Republic of China
| | - Linwei Yu
- National Laboratory of Solid State Microstructures and School of Electronics Science and Engineering/Collaborative Innovation Centre of Advanced Microstructures , Nanjing University , Nanjing 210093 , People's Republic of China
| | - Jun Xu
- National Laboratory of Solid State Microstructures and School of Electronics Science and Engineering/Collaborative Innovation Centre of Advanced Microstructures , Nanjing University , Nanjing 210093 , People's Republic of China
| | - Yang Jiang
- School of Materials Science and Engineering , Hefei University of Technology , Hefei 230009 , People's Republic of China
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174
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Shen W, Ruan L, Shen Z, Deng Z. Reversible light-mediated compositional and structural transitions between CsPbBr 3 and CsPb 2Br 5 nanosheets. Chem Commun (Camb) 2018; 54:2804-2807. [PMID: 29492497 DOI: 10.1039/c8cc00139a] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
This communication describes a new method to achieve reversible light-induced chemical composition and phase structural transitions from polyvinylpyrrolidone-capped orthorhombic CsPbBr3 to tetragonal CsPb2Br5 nanosheets or vice versa. This work will deepen our understanding of the controlled synthesis, post-processing, and decomposition pathway of cesium lead halide perovskite nanocrystals.
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Affiliation(s)
- Wei Shen
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing, Jiangsu 210093, People's Republic of China.
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175
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Zhang X, Jin Z, Zhang J, Bai D, Bian H, Wang K, Sun J, Wang Q, Liu SF. All-Ambient Processed Binary CsPbBr 3-CsPb 2Br 5 Perovskites with Synergistic Enhancement for High-Efficiency Cs-Pb-Br-Based Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2018; 10:7145-7154. [PMID: 29388429 DOI: 10.1021/acsami.7b18902] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
All-inorganic CsPbBr3 perovskite solar cells display outstanding stability toward moisture, light soaking, and thermal stressing, demonstrating great potential in tandem solar cells and toward commercialization. Unfortunately, it is still challenging to prepare high-performance CsPbBr3 films at moderate temperatures. Herein, a uniform, compact CsPbBr3 film was fabricated using its quantum dot (QD)-based ink precursor. The film was then treated using thiocyanate ethyl acetate (EA) solution in all-ambient conditions to produce a superior CsPbBr3-CsPb2Br5 composite film with a larger grain size and minimal defects. The achievement was attributed to the surface dissolution and recrystallization of the existing SCN- and EA. More specifically, the SCN- ions were first absorbed on the Pb atoms, leading to the dissolution and stripping of Cs+ and Br- ions from the CsPbBr3 QDs. On the other hand, the EA solution enhances the diffusion dynamics of surface atoms and the surfactant species. It is found that a small amount of CsPb2Br5 in the composite film gives the best surface passivation, while the Br-rich surface decreases Br vacancies (VBr) for a prolonged carrier lifetime. As a result, the fabricated device gives a higher solar cell efficiency of 6.81% with an outstanding long-term stability.
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Affiliation(s)
- Xisheng Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science & Engineering, Shaanxi Normal University , Xi'an 710119, P. R. China
- Department of Physics and Electronic Engineering, Yuncheng University , Yuncheng 044000, China
| | - Zhiwen Jin
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science & Engineering, Shaanxi Normal University , Xi'an 710119, P. R. China
| | - Jingru Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science & Engineering, Shaanxi Normal University , Xi'an 710119, P. R. China
| | - Dongliang Bai
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science & Engineering, Shaanxi Normal University , Xi'an 710119, P. R. China
| | - Hui Bian
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science & Engineering, Shaanxi Normal University , Xi'an 710119, P. R. China
| | - Kang Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science & Engineering, Shaanxi Normal University , Xi'an 710119, P. R. China
| | - Jie Sun
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science & Engineering, Shaanxi Normal University , Xi'an 710119, P. R. China
| | - Qian Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science & Engineering, Shaanxi Normal University , Xi'an 710119, P. R. China
| | - Shengzhong Frank Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science & Engineering, Shaanxi Normal University , Xi'an 710119, P. R. China
- Dalian National Laboratory for Clean Energy; iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences , Dalian 116023, P. R. China
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176
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Zhang X, Bai X, Wu H, Zhang X, Sun C, Zhang Y, Zhang W, Zheng W, Yu WW, Rogach AL. Water-Assisted Size and Shape Control of CsPbBr3
Perovskite Nanocrystals. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201710869] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xiaoyu Zhang
- State Key Laboratory on Integrated Optoelectronics and College of Electronic Science and Engineering; Jilin University; Changchun 130012 China
- Department of Materials Science; Key Laboratory of Mobile Materials MOE; State Key Laboratory of Automotive Simulation and Control; Jilin University; Changchun 130012 China
| | - Xue Bai
- State Key Laboratory on Integrated Optoelectronics and College of Electronic Science and Engineering; Jilin University; Changchun 130012 China
| | - Hua Wu
- State Key Laboratory on Integrated Optoelectronics and College of Electronic Science and Engineering; Jilin University; Changchun 130012 China
| | - Xiangtong Zhang
- State Key Laboratory on Integrated Optoelectronics and College of Electronic Science and Engineering; Jilin University; Changchun 130012 China
| | - Chun Sun
- State Key Laboratory on Integrated Optoelectronics and College of Electronic Science and Engineering; Jilin University; Changchun 130012 China
| | - Yu Zhang
- State Key Laboratory on Integrated Optoelectronics and College of Electronic Science and Engineering; Jilin University; Changchun 130012 China
| | - Wei Zhang
- Department of Materials Science; Key Laboratory of Mobile Materials MOE; State Key Laboratory of Automotive Simulation and Control; Jilin University; Changchun 130012 China
| | - Weitao Zheng
- Department of Materials Science; Key Laboratory of Mobile Materials MOE; State Key Laboratory of Automotive Simulation and Control; Jilin University; Changchun 130012 China
| | - William W. Yu
- State Key Laboratory on Integrated Optoelectronics and College of Electronic Science and Engineering; Jilin University; Changchun 130012 China
- Department of Chemistry and Physics; Louisiana State University; Shreveport LA 71115 USA
| | - Andrey L. Rogach
- Department of Materials Science and Engineering, and Centre for Functional Photonics (CFP); City University of Hong Kong; Kowloon Hong Kong SAR Hong Kong
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177
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Zhang X, Bai X, Wu H, Zhang X, Sun C, Zhang Y, Zhang W, Zheng W, Yu WW, Rogach AL. Water-Assisted Size and Shape Control of CsPbBr3
Perovskite Nanocrystals. Angew Chem Int Ed Engl 2018; 57:3337-3342. [DOI: 10.1002/anie.201710869] [Citation(s) in RCA: 171] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 02/05/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Xiaoyu Zhang
- State Key Laboratory on Integrated Optoelectronics and College of Electronic Science and Engineering; Jilin University; Changchun 130012 China
- Department of Materials Science; Key Laboratory of Mobile Materials MOE; State Key Laboratory of Automotive Simulation and Control; Jilin University; Changchun 130012 China
| | - Xue Bai
- State Key Laboratory on Integrated Optoelectronics and College of Electronic Science and Engineering; Jilin University; Changchun 130012 China
| | - Hua Wu
- State Key Laboratory on Integrated Optoelectronics and College of Electronic Science and Engineering; Jilin University; Changchun 130012 China
| | - Xiangtong Zhang
- State Key Laboratory on Integrated Optoelectronics and College of Electronic Science and Engineering; Jilin University; Changchun 130012 China
| | - Chun Sun
- State Key Laboratory on Integrated Optoelectronics and College of Electronic Science and Engineering; Jilin University; Changchun 130012 China
| | - Yu Zhang
- State Key Laboratory on Integrated Optoelectronics and College of Electronic Science and Engineering; Jilin University; Changchun 130012 China
| | - Wei Zhang
- Department of Materials Science; Key Laboratory of Mobile Materials MOE; State Key Laboratory of Automotive Simulation and Control; Jilin University; Changchun 130012 China
| | - Weitao Zheng
- Department of Materials Science; Key Laboratory of Mobile Materials MOE; State Key Laboratory of Automotive Simulation and Control; Jilin University; Changchun 130012 China
| | - William W. Yu
- State Key Laboratory on Integrated Optoelectronics and College of Electronic Science and Engineering; Jilin University; Changchun 130012 China
- Department of Chemistry and Physics; Louisiana State University; Shreveport LA 71115 USA
| | - Andrey L. Rogach
- Department of Materials Science and Engineering, and Centre for Functional Photonics (CFP); City University of Hong Kong; Kowloon Hong Kong SAR Hong Kong
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178
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Kang B, Biswas K. Exploring Polaronic, Excitonic Structures and Luminescence in Cs 4PbBr 6/CsPbBr 3. J Phys Chem Lett 2018; 9:830-836. [PMID: 29390608 DOI: 10.1021/acs.jpclett.7b03333] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Among the important family of halide perovskites, one particular case of all-inorganic, 0-D Cs4PbBr6 and 3-D CsPbBr3-based nanostructures and thin films is witnessing intense activity due to ultrafast luminescence with high quantum yield. To understand their emissive behavior, we use hybrid density functional calculations to first compare the ground-state electronic structure of the two prospective compounds. The dispersive band edges of CsPbBr3 do not support self-trapped carriers, which agrees with reports of weak exciton binding energy and high photocurrent. The larger gap 0-D material Cs4PbBr6, however, reveals polaronic and excitonic features. We show that those lattice-coupled carriers are likely responsible for observed ultraviolet emission around ∼375 nm, reported in bulk Cs4PbBr6 and Cs4PbBr6/CsPbBr3 composites. Ionization potential calculations and estimates of type-I band alignment support the notion of quantum confinement leading to fast, green emission from CsPbBr3 nanostructures embedded in Cs4PbBr6.
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Affiliation(s)
- Byungkyun Kang
- Department of Chemistry and Physics, Arkansas State University , State University, Arkansas 72467, United States
| | - Koushik Biswas
- Department of Chemistry and Physics, Arkansas State University , State University, Arkansas 72467, United States
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179
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Wang A, Wang Y, Sun C, Wang C, Cui B, Zhao X, Zeng Z, Yao J, Yang D, Liu G, Cui H. Fabrication, Characterization, and Biological Activity of Avermectin Nano-delivery Systems with Different Particle Sizes. NANOSCALE RESEARCH LETTERS 2018; 13:2. [PMID: 29318395 PMCID: PMC5760487 DOI: 10.1186/s11671-017-2405-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 12/06/2017] [Indexed: 05/18/2023]
Abstract
Nano-delivery systems for the active ingredients of pesticides can improve the utilization rates of pesticides and prolong their control effects. This is due to the nanocarrier envelope and controlled release function. However, particles containing active ingredients in controlled release pesticide formulations are generally large and have wide size distributions. There have been limited studies about the effect of particle size on the controlled release properties and biological activities of pesticide delivery systems. In the current study, avermectin (Av) nano-delivery systems were constructed with different particle sizes and their performances were evaluated. The Av release rate in the nano-delivery system could be effectively controlled by changing the particle size. The biological activity increased with decreasing particle size. These results suggest that Av nano-delivery systems can significantly improve the controllable release, photostability, and biological activity, which will improve efficiency and reduce pesticide residues.
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Affiliation(s)
- Anqi Wang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
- Nanobiotechnology Research Center, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
| | - Yan Wang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China.
- Nanobiotechnology Research Center, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China.
| | - Changjiao Sun
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
- Nanobiotechnology Research Center, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
| | - Chunxin Wang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
- Nanobiotechnology Research Center, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
| | - Bo Cui
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
- Nanobiotechnology Research Center, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
| | - Xiang Zhao
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
- Nanobiotechnology Research Center, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
| | - Zhanghua Zeng
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
- Nanobiotechnology Research Center, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
| | - Junwei Yao
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
- Nanobiotechnology Research Center, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
| | - Dongsheng Yang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
- Nanobiotechnology Research Center, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
| | - Guoqiang Liu
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
- Nanobiotechnology Research Center, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China
| | - Haixin Cui
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China.
- Nanobiotechnology Research Center, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China.
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180
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Seth S, Samanta A. Photoluminescence of Zero-Dimensional Perovskites and Perovskite-Related Materials. J Phys Chem Lett 2018; 9:176-183. [PMID: 29240443 DOI: 10.1021/acs.jpclett.7b02931] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Zero-dimensional (0-D) perovskites and perovskite-related materials are an emerging class of optoelectronic materials exhibiting strong excitonic properties and, quite often, high photoluminescence (PL) in the solid state. Here we highlight two different classes of 0-D perovskites with contrasting structural and optical properties, focusing mainly on the less explored but rapidly growing bulk quantum materials termed as 0-D perovskite-related materials (0-D PRMs), whose PL properties are quite intriguing and a topic of recent debate. We attempt to present here a comprehensive picture to rationalize the contrasting properties of the 0-D PRMs and provide an understanding of the mechanism of exciton dynamics and PL of this class of materials. We hope that exciting PL and tunable composition of these systems will help design of new materials with versatile optical properties suited for practical applications.
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Affiliation(s)
- Sudipta Seth
- School of Chemistry, University of Hyderabad , Hyderabad 500046, India
| | - Anunay Samanta
- School of Chemistry, University of Hyderabad , Hyderabad 500046, India
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181
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Jia C, Li H, Meng X, Li H. CsPbX3/Cs4PbX6 core/shell perovskite nanocrystals. Chem Commun (Camb) 2018; 54:6300-6303. [DOI: 10.1039/c8cc02802h] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The synthesis of 3D/0D core/shell lead halide perovskite nanocrystals has been realized using the seeded growth approach for the first time.
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Affiliation(s)
- Chao Jia
- Beijing Key Laboratory of Construction-Tailorable Advanced Functional Materials and Green Applications
- School of Materials Science & Engineering
- Beijing Institute of Technology
- Beijing 10081
- China
| | - Hui Li
- Beijing Key Laboratory of Construction-Tailorable Advanced Functional Materials and Green Applications
- School of Materials Science & Engineering
- Beijing Institute of Technology
- Beijing 10081
- China
| | - Xianwei Meng
- Laboratory of Controllable Preparation and Application of Nanomaterials
- CAS Key Laboratory of Cryogenics
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Hongbo Li
- Beijing Key Laboratory of Construction-Tailorable Advanced Functional Materials and Green Applications
- School of Materials Science & Engineering
- Beijing Institute of Technology
- Beijing 10081
- China
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182
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Hu H, Wu L, Tan Y, Zhong Q, Chen M, Qiu Y, Yang D, Sun B, Zhang Q, Yin Y. Interfacial Synthesis of Highly Stable CsPbX 3/Oxide Janus Nanoparticles. J Am Chem Soc 2017; 140:406-412. [PMID: 29228773 DOI: 10.1021/jacs.7b11003] [Citation(s) in RCA: 164] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The poor stability of CsPbX3 (X = Cl, Br, I) nanocrystals (NCs) has severely impeded their practical applications. Although there are some successful examples on encapsulating multiple CsPbX3 NCs into an oxide or polymer matrix, it has remained a serious challenge for the surface modification/encapsulation using oxides or polymers at a single particle level. In this work, monodisperse CsPbX3/SiO2 and CsPbBr3/Ta2O5 Janus nanoparticles were successfully prepared by combining a water-triggered transformation process and a sol-gel method. The CsPbBr3/SiO2 NCs exhibited a photoluminescence quantum yield of 80% and a lifetime of 19.8 ns. The product showed dramatically improved stability against destruction by air, water, and light irradiation. Upon continuous irradiation by intense UV light for 10 h, a film of the CsPbBr3/SiO2 Janus NCs showed only a slight drop (2%) in the PL intensity, while a control sample of unmodified CsPbBr3 NCs displayed a 35% drop. We further highlighted the advantageous features of the CsPbBr3/SiO2 NCs in practical applications by using them as the green light source for the fabrication of a prototype white light emitting diode, and demonstrated a wide color gamut covering up to 138% of the National Television System Committee standard. This work not only provides a novel approach for the surface modification of individual CsPbX3 NCs but also helps to address the challenging stability issue; therefore, it has an important implication toward their practical applications.
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Affiliation(s)
- Huicheng Hu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University , 199 Ren'ai Road, Suzhou, 215123 Jiangsu, People's Republic of China
| | - Linzhong Wu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University , 199 Ren'ai Road, Suzhou, 215123 Jiangsu, People's Republic of China.,Department of Chemistry, University of California , Riverside, California 92521, United States
| | - Yeshu Tan
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University , 199 Ren'ai Road, Suzhou, 215123 Jiangsu, People's Republic of China
| | - Qixuan Zhong
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University , 199 Ren'ai Road, Suzhou, 215123 Jiangsu, People's Republic of China
| | - Min Chen
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University , 199 Ren'ai Road, Suzhou, 215123 Jiangsu, People's Republic of China
| | - Yinghua Qiu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University , 199 Ren'ai Road, Suzhou, 215123 Jiangsu, People's Republic of China
| | - Di Yang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University , 199 Ren'ai Road, Suzhou, 215123 Jiangsu, People's Republic of China
| | - Baoquan Sun
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University , 199 Ren'ai Road, Suzhou, 215123 Jiangsu, People's Republic of China
| | - Qiao Zhang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University , 199 Ren'ai Road, Suzhou, 215123 Jiangsu, People's Republic of China
| | - Yadong Yin
- Department of Chemistry, University of California , Riverside, California 92521, United States
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183
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Wu L, Zhong Q, Yang D, Chen M, Hu H, Pan Q, Liu H, Cao M, Xu Y, Sun B, Zhang Q. Improving the Stability and Size Tunability of Cesium Lead Halide Perovskite Nanocrystals Using Trioctylphosphine Oxide as the Capping Ligand. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:12689-12696. [PMID: 29032682 DOI: 10.1021/acs.langmuir.7b02963] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Recently, all-inorganic cesium lead halide (CsPbX3, X = Cl, Br, and I) nanocrystals (NCs) have drawn wide attention because of their excellent optoelectronic properties and potential applications. However, one of the most significant challenges of such NCs is their low stability against protonic solvents. In this work, we demonstrate that by incorporating a highly branched capping ligand, trioctylphosphine oxide (TOPO), into the traditional oleic acid/oleylamine system, monodisperse CsPbX3 NCs with excellent optoelectronic properties can be achieved at elevated temperatures (up to 260 °C). The size of such NCs can be varied in a relatively wide range. The capping of TOPO on NCs has been verified through Fourier transform infrared spectroscopy measurement. More importantly, the presence of TOPO can dramatically improve the stability of CsPbX3 NCs against ethanol treatment. After ethanol treatment for 100 min, the emission intensity of the TOPO-capped sample dropped only 5%, whereas that of non-TOPO-capped NCs dropped up to 86%. This work may shed some light on the preparation and application of CsPbX3 NCs with higher stability.
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Affiliation(s)
- Linzhong Wu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , Suzhou, Jiangsu 215123, P. R. China
| | - Qixuan Zhong
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , Suzhou, Jiangsu 215123, P. R. China
| | - Di Yang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , Suzhou, Jiangsu 215123, P. R. China
| | - Min Chen
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , Suzhou, Jiangsu 215123, P. R. China
| | - Huicheng Hu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , Suzhou, Jiangsu 215123, P. R. China
| | - Qi Pan
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , Suzhou, Jiangsu 215123, P. R. China
| | - Haiyu Liu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , Suzhou, Jiangsu 215123, P. R. China
| | - Muhan Cao
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , Suzhou, Jiangsu 215123, P. R. China
| | - Yong Xu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , Suzhou, Jiangsu 215123, P. R. China
| | - Baoquan Sun
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , Suzhou, Jiangsu 215123, P. R. China
| | - Qiao Zhang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University , Suzhou, Jiangsu 215123, P. R. China
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184
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Palazon F, Urso C, De Trizio L, Akkerman Q, Marras S, Locardi F, Nelli I, Ferretti M, Prato M, Manna L. Postsynthesis Transformation of Insulating Cs 4PbBr 6 Nanocrystals into Bright Perovskite CsPbBr 3 through Physical and Chemical Extraction of CsBr. ACS ENERGY LETTERS 2017; 2:2445-2448. [PMID: 29285525 PMCID: PMC5736241 DOI: 10.1021/acsenergylett.7b00842] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 09/19/2017] [Indexed: 05/23/2023]
Abstract
Perovskite-related Cs4PbBr6 nanocrystals present a "zero-dimensional" crystalline structure where adjacent [PbBr6]4- octahedra do not share any corners. We show in this work that these nanocrystals can be converted into "three-dimensional" CsPbBr3 perovskites by extraction of CsBr. This conversion drastically changes the optoelectronic properties of the nanocrystals that become highly photoluminescent. The extraction of CsBr can be achieved either by thermal annealing (physical approach) or by chemical reaction with Prussian Blue (chemical approach). The former approach can be simply carried out on a dried film without addition of any chemicals but does not yield a full transformation. Instead, reaction with Prussian Blue in solution achieves a full transformation into the perovskite phase. This transformation was also verified on the iodide counterpart (Cs4PbI6).
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Affiliation(s)
- Francisco Palazon
- Nanochemistry
Department, and Materials Characterization Facility, Istituto
Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Carmine Urso
- Nanochemistry
Department, and Materials Characterization Facility, Istituto
Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Luca De Trizio
- Nanochemistry
Department, and Materials Characterization Facility, Istituto
Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Quinten Akkerman
- Nanochemistry
Department, and Materials Characterization Facility, 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
| | - Sergio Marras
- Nanochemistry
Department, and Materials Characterization Facility, Istituto
Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Federico Locardi
- Dipartimento
di Chimica e Chimica Industriale, Università
degli Studi di Genova, Via Dodecaneso 31, 16146 Genova, Italy
| | - Ilaria Nelli
- Nanochemistry
Department, and Materials Characterization Facility, 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
| | - Maurizio Ferretti
- Dipartimento
di Chimica e Chimica Industriale, Università
degli Studi di Genova, Via Dodecaneso 31, 16146 Genova, Italy
| | - Mirko Prato
- Nanochemistry
Department, and Materials Characterization Facility, Istituto
Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Liberato Manna
- Nanochemistry
Department, and Materials Characterization Facility, Istituto
Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
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