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Liao X, Liu M, He M, Yuan C, Zhang Q, Wan Q, Qu Z, Kong L, Li L. Damage-Free Silica Coating for Colloidal Nanocrystals Through a Proactively Water-Generating Amidation Reaction at High Temperature. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2309902. [PMID: 38402427 DOI: 10.1002/smll.202309902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 01/29/2024] [Indexed: 02/26/2024]
Abstract
Silica is a promising shell coating material for colloidal nanoparticles due to its excellent chemical inertness and optical transparency. To encapsulate high-quality colloidal nanocrystals with silica shells, the silane coupling hydrolysis is currently the most effective approach. However, this reaction requires water, which often adversely affects the intrinsic physicochemical properties of nanocrystals. Achieving a damage-free silica encapsulation process to nanocrystals by hydrolysis is a huge challenge. Here, a novel strategy is developed to coat colloidal nanocrystals with a denser silica shell via a proactively water-generating reaction at high temperature. In this work, water molecules are continuously and proactively released into the reaction system through the amidation reaction, followed by in situ hydrolysis of silane, completely avoiding the impacts of water on nanocrystals during the silica coating process. In this work, water sensitive perovskite nanocrystals (CsPbBr3) are selected as the typical colloidal nanocrystals for silica coating. Notably, this high-temperature in situ encapsulation technology greatly improves the optical properties of nanocrystals, and the silica shells exhibit a denser structure, providing nanocrystals with better protection. This method overcomes the challenge of the influence of water on nanocrystals during the hydrolysis process, and provides an important reference for the non-destructive encapsulation of colloidal nanocrystals.
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Affiliation(s)
- Xinrong Liao
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Mingming Liu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Mengda He
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Changwei Yuan
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Qinggang Zhang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Qun Wan
- Macao Institute of Materials Science and Engineering (MIMSE), Life Science-Nanomaterials Fusion Technology Innovation Center, Macau University of Science and Technology, Taipa, Macau, 999078, P. R. China
| | - Zan Qu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Long Kong
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P. R. China
| | - Liang Li
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P. R. China
- Macao Institute of Materials Science and Engineering (MIMSE), Life Science-Nanomaterials Fusion Technology Innovation Center, Macau University of Science and Technology, Taipa, Macau, 999078, P. R. China
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2
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Chen J, Jiang G, Hamann E, Mescher H, Jin Q, Allegro I, Brenner P, Li Z, Gaponik N, Eychmüller A, Lemmer U. Organosilicon-Based Ligand Design for High-Performance Perovskite Nanocrystal Films for Color Conversion and X-ray Imaging. ACS NANO 2024; 18:10054-10062. [PMID: 38527458 PMCID: PMC11008364 DOI: 10.1021/acsnano.3c11991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 02/16/2024] [Accepted: 02/23/2024] [Indexed: 03/27/2024]
Abstract
Perovskite nanocrystals (PNCs) bear a huge potential for widespread applications, such as color conversion, X-ray scintillators, and active laser media. However, the poor intrinsic stability and high susceptibility to environmental stimuli including moisture and oxygen have become bottlenecks of PNC materials for commercialization. Appropriate barrier material design can efficiently improve the stability of the PNCs. Particularly, the strategy for packaging PNCs in organosilicon matrixes can integrate the advantages of inorganic-oxide-based and polymer-based encapsulation routes. However, the inert long-carbon-chain ligands (e.g., oleic acid, oleylamine) used in the current ligand systems for silicon-based encapsulation are detrimental to the cross-linking of the organosilicon matrix, resulting in performance deficiencies in the nanocrystal films, such as low transparency and large surface roughness. Herein, we propose a dual-organosilicon ligand system consisting of (3-aminopropyl)triethoxysilane (APTES) and (3-aminopropyl)triethoxysilane with pentanedioic anhydride (APTES-PA), to replace the inert long-carbon-chain ligands for improving the performance of organosilicon-coated PNC films. As a result, strongly fluorescent PNC films prepared by a facile solution-casting method demonstrate high transparency and reduced surface roughness while maintaining high stability in various harsh environments. The optimized PNC films were eventually applied in an X-ray imaging system as scintillators, showing a high spatial resolution above 20 lp/mm. By designing this promising dual organosilicon ligand system for PNC films, our work highlights the crucial influence of the molecular structure of the capping ligands on the optical performance of the PNC film.
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Affiliation(s)
- Junchi Chen
- Light
Technology Institute, Karlsruhe Institute
of Technology (KIT), Engesserstrasse 13, 76131 Karlsruhe, Germany
| | - Guocan Jiang
- Zhejiang
Institute of Photoelectronics, Department of Physics, Zhejiang Normal University, Jinhua, 321004 Zhejiang, P. R. China
- Physical
Chemistry, Technische Universität
Dresden (TUD), Zellescher
Weg 19, 01069 Dresden, Germany
| | - Elias Hamann
- Institute
for Photon Science and Synchrotron Radiation, Karlsruhe Institute of Technology (KIT), 76344, Eggenstein Leopoldshafen, Germany
| | - Henning Mescher
- Light
Technology Institute, Karlsruhe Institute
of Technology (KIT), Engesserstrasse 13, 76131 Karlsruhe, Germany
| | - Qihao Jin
- Light
Technology Institute, Karlsruhe Institute
of Technology (KIT), Engesserstrasse 13, 76131 Karlsruhe, Germany
| | - Isabel Allegro
- Light
Technology Institute, Karlsruhe Institute
of Technology (KIT), Engesserstrasse 13, 76131 Karlsruhe, Germany
| | - Philipp Brenner
- ZEISS
Innovation Hub @ KIT, Hermann-von-Helmholtz-Platz 6, 76344 Eggenstein-Leopoldshafen, Germany
| | - Zhengquan Li
- Zhejiang
Institute of Photoelectronics, Department of Physics, Zhejiang Normal University, Jinhua, 321004 Zhejiang, P. R. China
| | - Nikolai Gaponik
- Physical
Chemistry, Technische Universität
Dresden (TUD), Zellescher
Weg 19, 01069 Dresden, Germany
| | - Alexander Eychmüller
- Physical
Chemistry, Technische Universität
Dresden (TUD), Zellescher
Weg 19, 01069 Dresden, Germany
| | - Uli Lemmer
- Light
Technology Institute, Karlsruhe Institute
of Technology (KIT), Engesserstrasse 13, 76131 Karlsruhe, Germany
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3
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Jiang L, Qiu Y, Xiang L, Tang J. APTES and CTAB Synergistic Induce a Heterozygous CsPbBr 3/Cs 4PbBr 6 Perovskite Composite and its Application on the Sensitive Fluorescent Detection of Iodide ions. J Fluoresc 2024:10.1007/s10895-024-03623-x. [PMID: 38396149 DOI: 10.1007/s10895-024-03623-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 02/19/2024] [Indexed: 02/25/2024]
Abstract
Recently, all-inorganic halide perovskite quantum dots (IPQD) as a new fluorescent material with excellent fluorescence properties have attracted wide attention. However, their instability in polar solvents is the main factor hindering their application in analysis. Herein, a heterozygous perovskite (CsPbBr3/Cs4PbBr6) was simultaneously prepared and stabilized by a silylanization strategy using (3-aminopropyl)-triethoxysilane (APTES) and cetyltrimethyl ammonium bromide (CTAB) assisted precipitation encapsulation method. The synthesized CsPbBr3/Cs4PbBr6 emitted an independent fluorescence at 520 nm. The obtained CsPbBr3/Cs4PbBr6 exhibited good stability in ethanol/water mixtures. It was used as a fluorescent probe for sensitively detecting iodide ions (I-) by fluorescence quenching mechanism in the concentration range of 1 ~ 70.0 µM with the detection limit (LOD) of 0.83 µM (relative standard deviation (RSD) = 1.33%, n = 20). The simplicity and high selectivity of the proposed fluorescent analysis method were the prominent features. This work could be extended to the other target ion detection by a perovskite fluorescent quenching.
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Affiliation(s)
- Lingyu Jiang
- Department of Environmental and Energy Engineering, Anhui Jianzhu University, Ziyun Road 292, Hefei, 230601, China
| | - Yunyun Qiu
- Department of Environmental and Energy Engineering, Anhui Jianzhu University, Ziyun Road 292, Hefei, 230601, China
| | - Li Xiang
- Department of Environmental and Energy Engineering, Anhui Jianzhu University, Ziyun Road 292, Hefei, 230601, China
| | - Jianshe Tang
- Department of Environmental and Energy Engineering, Anhui Jianzhu University, Ziyun Road 292, Hefei, 230601, China.
- Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse, Hefei, 230601, China.
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4
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Shen X, Wang Z, Chen L, Wei J, Ouyang Q. Enhanced Photoelectric Properties of CsPbBr 3 by SiO 2 and TiO 2 Bilayer Heterostructures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:2719-2728. [PMID: 38277777 DOI: 10.1021/acs.langmuir.3c03334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2024]
Abstract
CsPbBr3/SiO2 heterostructures were synthesized by the hydrolysis reaction of a mixture of CsPbBr3 nanocrystals (NCs) and (3-aminopropyl)triethoxysilane (APTS) in air. Compared with CsPbBr3 NCs, the CsPbBr3/SiO2 heterostructures exhibit stronger photoluminescence (PL) intensity, longer lifetime of PL (∼40.5 ns), and higher PL-quantum yield (PLQY, ∼86%). The carrier dynamics of CsPbBr3/SiO2 was detected by the transient absorption (TA) spectrum. The experimental results show that SiO2 passivates the surface traps of CsPbBr3 NCs and enhances the PL intensity. However, photoelectrochemical impedance spectra (PEIS) demonstrate that the impedance of CsPbBr3/SiO2 is higher than that of CsPbBr3 NCs, which reduces carrier transport and extraction. Because the application of CsPbBr3/SiO2 in optoelectronics is limited, CsPbBr3/SiO2/TiO2 heterostructures were synthesized by the further reaction of tetrabutyl titanate (TBT). The TiO2 coating can reduce the impedance of the CsPbBr3/SiO2. Importantly, ∼68% of the PL intensity of CsPbBr3/SiO2 is retained. Compared with CsPbBr3/SiO2 and CsPbBr3 NCs, the CsPbBr3/SiO2/TiO2 demonstrates faster carrier transport (κct = 2.4 × 109 s-1) and higher photocurrent density (J = 76 nA cm-2). In addition, CsPbBr3/SiO2/TiO2 shows good stability under (ultraviolet) UV irradiation, along with water stability and thermal stability. Therefore, the double protection approach can enhance the stability of CsPbBr3 NCs and tune the optoelectronic properties of CsPbBr3 NCs.
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Affiliation(s)
- Xiong Shen
- Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin 150001, China
- Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin 150001, China
| | - Zhongming Wang
- Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin 150001, China
- Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin 150001, China
| | - Lin Chen
- Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin 150001, China
- Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin 150001, China
| | - Jinhe Wei
- Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin 150001, China
- Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin 150001, China
| | - Qiuyun Ouyang
- Key Laboratory of Photonic Materials and Devices Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin 150001, China
- Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin 150001, China
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5
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Kim D, Yun T, An S, Lee CL. How to improve the structural stabilities of halide perovskite quantum dots: review of various strategies to enhance the structural stabilities of halide perovskite quantum dots. NANO CONVERGENCE 2024; 11:4. [PMID: 38279984 PMCID: PMC10821855 DOI: 10.1186/s40580-024-00412-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 01/08/2024] [Indexed: 01/29/2024]
Abstract
Halide perovskites have emerged as promising materials for various optoelectronic devices because of their excellent optical and electrical properties. In particular, halide perovskite quantum dots (PQDs) have garnered considerable attention as emissive materials for light-emitting diodes (LEDs) because of their higher color purities and photoluminescence quantum yields compared to conventional inorganic quantum dots (CdSe, ZnSe, ZnS, etc.). However, PQDs exhibit poor structural stabilities in response to external stimuli (moisture, heat, etc.) owing to their inherent ionic nature. This review presents recent research trends and insights into improving the structural stabilities of PQDs. In addition, the origins of the poor structural stabilities of PQDs and various methods to overcome this drawback are discussed. The structural degradation of PQDs is mainly caused by two mechanisms: (1) defect formation on the surface of the PQDs by ligand dissociation (i.e., detachment of weakly bound ligands from the surface of PQDs), and (2) vacancy formation by halide migration in the lattices of the PQDs due to the low migration energy of halide ions. The structural stabilities of PQDs can be improved through four methods: (1) ligand modification, (2) core-shell structure, (3) crosslinking, and (4) metal doping, all of which are presented in detail herein. This review provides a comprehensive understanding of the structural stabilities and opto-electrical properties of PQDs and is expected to contribute to future research on improving the device performance of perovskite quantum dot LEDs (PeLEDs).
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Affiliation(s)
- Dokyum Kim
- Advanced Photonics Research Institute (APRI), Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea
| | - Taesun Yun
- Advanced Photonics Research Institute (APRI), Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea
- Department of Physics, Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju, 54896, Republic of Korea
| | - Sangmin An
- Department of Physics, Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju, 54896, Republic of Korea
| | - Chang-Lyoul Lee
- Advanced Photonics Research Institute (APRI), Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea.
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6
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Li QF, Wang JT, Wang Z. Improving the stability of perovskite nanocrystals via SiO 2 coating and their applications. RSC Adv 2024; 14:1417-1430. [PMID: 38174228 PMCID: PMC10763656 DOI: 10.1039/d3ra07231b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 12/21/2023] [Indexed: 01/05/2024] Open
Abstract
Lead halide perovskite nanocrystals (LHP NCs) with outstanding optical properties have been regarded as promising alternatives to traditional phosphors for lighting and next-generation display technology. However, the practical applications of LHP NCs are seriously hindered by their poor stability upon exposure to moisture, oxygen, light, and heat. Hence, various strategies have been proposed to solve this issue. In this review, we have focused our attention on improving the stability of LHP NCs via SiO2 coating because it has the advantages of simple operation, less toxicity, and easy repetition. SiO2 coating is classified into four types: (a) in situ hydrolytic coating, (b) mesoporous silica loading, (c) mediated anchoring, and (d) double coating. The potential applications of SiO2-coated LHP NCs in the field of optoelectronics, biology, and catalysis are presented to elucidate the reliability and availability of SiO2 coating. Finally, the future development and challenges in the preparation of SiO2-coated LHP NCs are analyzed in order to promote the commercialization process of LHP NC-related commodities.
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Affiliation(s)
- Qing-Feng Li
- Henan Key Laboratory of Rare Earth Functional Materials, International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University Zhoukou 466001 Henan China
| | - Jin-Tao Wang
- Henan Key Laboratory of Rare Earth Functional Materials, International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University Zhoukou 466001 Henan China
| | - Zhenling Wang
- College of Materials Engineering, Henan International Joint Laboratory of Rare Earth Composite Materials, Henan University of Engineering Xinzheng 451191 China
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7
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Segura Lecina O, Newton MA, Green PB, Albertini PP, Leemans J, Marshall KP, Stoian D, Loiudice A, Buonsanti R. Surface Chemistry Dictates the Enhancement of Luminescence and Stability of InP QDs upon c-ALD ZnO Hybrid Shell Growth. JACS AU 2023; 3:3066-3075. [PMID: 38034959 PMCID: PMC10685429 DOI: 10.1021/jacsau.3c00457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 10/18/2023] [Accepted: 10/18/2023] [Indexed: 12/02/2023]
Abstract
Indium phosphide quantum dots (InP QDs) are a promising example of Restriction of Hazardous Substances directive (RoHS)-compliant light-emitting materials. However, they suffer from low quantum yield and instability upon processing under ambient conditions. Colloidal atomic layer deposition (c-ALD) has been recently proposed as a methodology to grow hybrid materials including QDs and organic/inorganic oxide shells, which possess new functions compared to those of the as-synthesized QDs. Here, we demonstrate that ZnO shells can be grown on InP QDs obtained via two synthetic routes, which are the classical sylilphosphine-based route and the more recently developed aminophosphine-based one. We find that the ZnO shell increases the photoluminescence emission only in the case of aminophosphine-based InP QDs. We rationalize this result with the different chemistry involved in the nucleation step of the shell and the resulting surface defect passivation. Furthermore, we demonstrate that the ZnO shell prevents degradation of the InP QD suspension under ambient conditions by avoiding moisture-induced displacement of the ligands from their surface. Overall, this study proposes c-ALD as a methodology for the synthesis of alternative InP-based core@shell QDs and provides insight into the surface chemistry that results in both enhanced photoluminescence and stability required for application in optoelectronic devices and bioimaging.
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Affiliation(s)
- Ona Segura Lecina
- Laboratory
of Nanochemistry for Energy (LNCE), Institute of Chemical Sciences
and Engineering (ISIC), École Polytechnique
Fédérale de Lausanne, CH-1950 Sion, Switzerland
| | - Mark A. Newton
- Laboratory
of Nanochemistry for Energy (LNCE), Institute of Chemical Sciences
and Engineering (ISIC), École Polytechnique
Fédérale de Lausanne, CH-1950 Sion, Switzerland
| | - Philippe B. Green
- Laboratory
of Nanochemistry for Energy (LNCE), Institute of Chemical Sciences
and Engineering (ISIC), École Polytechnique
Fédérale de Lausanne, CH-1950 Sion, Switzerland
| | - Petru P. Albertini
- Laboratory
of Nanochemistry for Energy (LNCE), Institute of Chemical Sciences
and Engineering (ISIC), École Polytechnique
Fédérale de Lausanne, CH-1950 Sion, Switzerland
| | - Jari Leemans
- Laboratory
of Nanochemistry for Energy (LNCE), Institute of Chemical Sciences
and Engineering (ISIC), École Polytechnique
Fédérale de Lausanne, CH-1950 Sion, Switzerland
| | - Kenneth P. Marshall
- The
Swiss-Norwegian Beamlines, European Synchrotron
Radiation Facility (ESRF), 38000 Grenoble, France
| | - Dragos Stoian
- The
Swiss-Norwegian Beamlines, European Synchrotron
Radiation Facility (ESRF), 38000 Grenoble, France
| | - Anna Loiudice
- Laboratory
of Nanochemistry for Energy (LNCE), Institute of Chemical Sciences
and Engineering (ISIC), École Polytechnique
Fédérale de Lausanne, CH-1950 Sion, Switzerland
| | - Raffaella Buonsanti
- Laboratory
of Nanochemistry for Energy (LNCE), Institute of Chemical Sciences
and Engineering (ISIC), École Polytechnique
Fédérale de Lausanne, CH-1950 Sion, Switzerland
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Yang L, Huang J, Tan Y, Lu W, Li Z, Pan A. All-inorganic lead halide perovskite nanocrystals applied in advanced display devices. MATERIALS HORIZONS 2023; 10:1969-1989. [PMID: 37039776 DOI: 10.1039/d3mh00062a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Advanced display devices are in greater demand due to their large color gamut, high color purity, ultrahigh visual resolution, and small size pixels. All-inorganic lead halide perovskite (AILHP) nanocrystals (NCs) possess inherent advantages such as narrow emission width, saturated color, and flexible integration, and have been developed as functional films, light sources, backlight components, and display panels. However, some drawbacks still restrict the practical application of advanced display devices based on AILHP NCs, including working stability, large-scale synthesis, and cost. In this review, we focus on AILHP NCs, review the recent progress in materials synthesis, stability improvement, patterning techniques, and device application. We also highlight the important role of materials systems in creating advanced display devices, followed by the challenges and opportunities in industrial processes. This review provides beneficial inspiration for the future development of AILHP NCs in colorful and white backlight, as well as high resolution full-color displays.
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Affiliation(s)
- Liuli Yang
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, Hunan Institute of Optoelectronic Integration, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering, Hunan University, Changsha 410082, P. R. China.
| | - Jianhua Huang
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, Hunan Institute of Optoelectronic Integration, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering, Hunan University, Changsha 410082, P. R. China.
| | - Yike Tan
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, Hunan Institute of Optoelectronic Integration, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering, Hunan University, Changsha 410082, P. R. China.
| | - Wei Lu
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, Hunan Institute of Optoelectronic Integration, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering, Hunan University, Changsha 410082, P. R. China.
| | - Ziwei Li
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, Hunan Institute of Optoelectronic Integration, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering, Hunan University, Changsha 410082, P. R. China.
- Wuhan National Laboratory for Optoelectronics and School of Physics, Huazhong University of Science and Technology, Wuhan, China
| | - Anlian Pan
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, Hunan Institute of Optoelectronic Integration, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering, Hunan University, Changsha 410082, P. R. China.
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9
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Xu Y, Hu X, Tang H, Hu Q, Wang S, Chen T, Zhang X, Jiang W, Wang L, Jiang W. Highly efficient silica coated perovskite nanocrystals with the assistance of ionic liquids for warm white LEDs. NANOSCALE 2023; 15:631-643. [PMID: 36511857 DOI: 10.1039/d2nr05118d] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Given the inherent characteristics of defect-tolerant, tunable emission performance, and high extinction coefficient, lead halide perovskite nanocrystals (NCs) have attracted widespread attention as a promising material in optoelectronic fields. However, their poor structural stability greatly impedes their practical applications. Herein, a novel strategy for synthesizing stable CsPbBr3@SiO2 NCs via the hydrolytic polycondensation of (3-aminopropyl)triethoxysilane (APTES) in the presence of ionic liquids (ILs) is deliberately designed. The problems of fluorescence quenching and undesirable agglomeration of NCs resulting from ligand loss and surface erosion existing in common encapsulation methods can be effectively resolved. The fast and controllable growth of the SiO2 shell around the CsPbBr3 NCs is realized owing to the high polarity and hygroscopicity of the IL. Moreover, the dual effects of the IL for passivating the surface defects and avoiding the structural degradation of NCs during the hydrolysis process of APTES are demonstrated. As a result, CsPbBr3@SiO2 NCs with a high photoluminescence quantum yield of 85.7% and excellent stability are realized. Furthermore, this method proves to be a versatile tool to obtain CsPbX3@SiO2 NCs with different halide compositions, realizing a broad tunable wavelength from 421.2 nm to 651.6 nm. A warm white LED with a high color rending index was assembled through packaging CsPbBr3@SiO2 NCs and Cu-In-Zn-S/ZnS/PVP composites on a commercial blue chip. These findings are expected to facilitate the development of perovskite NCs, which provides access to their optoelectronic applications.
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Affiliation(s)
- Yanqiao Xu
- National Engineering Research Center for Domestic & Building Ceramics, Jingdezhen Ceramic Institute, Jingdezhen 333000, China.
- School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333000, China
| | - Xiaobo Hu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
| | - Huidong Tang
- School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333000, China
| | - Qing Hu
- School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333000, China
| | - Sanhai Wang
- School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333000, China
| | - Ting Chen
- National Engineering Research Center for Domestic & Building Ceramics, Jingdezhen Ceramic Institute, Jingdezhen 333000, China.
| | - Xiaojun Zhang
- National Engineering Research Center for Domestic & Building Ceramics, Jingdezhen Ceramic Institute, Jingdezhen 333000, China.
- School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333000, China
| | - Weihui Jiang
- National Engineering Research Center for Domestic & Building Ceramics, Jingdezhen Ceramic Institute, Jingdezhen 333000, China.
- School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333000, China
| | - Lianjun Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
| | - Wan Jiang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
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10
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Li X, Tian Y, Yang L, Wang S, Zhao L, Ding J. In situ interfacial passivation with an arylphosphine oxide and phosphonate electron transporting layer for efficient all-solution-processed PeQLEDs. NANOSCALE 2022; 14:17230-17236. [PMID: 36377470 DOI: 10.1039/d2nr03793a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Perovskite quantum dot light-emitting diodes (PeQLEDs) have emerged as a promising candidate for high-quality lightings and displays, where an electron transporting layer (ETL) is required to achieve balanced charge transport and thus high performance. However, the ETL is often thermally-deposited under vacuum, since the low-cost solution process would damage the underlying perovskite quantum dots (PeQDs). Here, we demonstrate efficient all-solution-processed PeQLEDs based on arylphosphine oxide (SPPO13) and phosphonate (TPPO) as the ETL. Benefitting from the coordination between PO and exposed Pb atoms, in situ interfacial passivation occurs during the solution deposition of SPPO13 or TPPO on PeQDs. As a result, bilayer films (PeQDs/ETL) exhibit improved photoluminescence quantum yields and prolonged lifetimes compared with single layer PeQDs. Correspondingly, all-solution-processed PeQLEDs are fabricated successfully via an orthogonal solvent strategy, revealing bright green emission with a promising current efficiency of 24.1 cd A-1 (12.1 lm W-1, 6.47%) and CIE coordinates of (0.12, 0.79).
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Affiliation(s)
- Xuefei Li
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China.
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China.
| | - Yiting Tian
- School of Materials and Energy, Yunnan University, Kunming 650091, P. R. China
| | - Liuqing Yang
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China.
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China.
| | - Shumeng Wang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China.
| | - Lei Zhao
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China.
| | - Junqiao Ding
- School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China.
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China.
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11
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Zhu H, Pan Y, Peng C, Lian H, Lin J. 4-Bromo-Butyric Acid-Assisted In Situ Passivation Strategy for Superstable All-Inorganic Halide Perovskite CsPbX 3 Quantum Dots in Polar Media. Angew Chem Int Ed Engl 2022; 61:e202116702. [PMID: 35297150 DOI: 10.1002/anie.202116702] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Indexed: 11/05/2022]
Abstract
A crucial challenge is to develop an in situ passivation treatment strategy for CsPbX3 (CPX, X=Cl, Br, and I) quantum dots (QDs) and simultaneously retain their luminous efficiency and wavelength. Here, a facile method to significantly improve the stability of the CPX QDs via in situ crystallization with the synergistic effect of 4-bromo-butyric acid (BBA) and oleylamine (OLA) in polar solvents including aqueous solution and a possible fundamental mechanism are proposed. Monodispersed CsPbBr3 (CPB) QDs obtained in water show high photoluminescence quantum yields (PLQYs) of 86.4 % and their PL features of CPB QDs have no significant change after being dispersed in aqueous solution for 96 h, which implies the structure of CPB QDs is unchanged. The results provide a viable design strategy to synthesize all-inorganic perovskite CPX QDs with strong stability against the attack of polar solvents and shed more light on their surface chemistry.
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Affiliation(s)
- Hong Zhu
- Nanomaterials and Chemistry Key Laboratory, Faculty of Chemistry and Materials Engineering, Wenzhou University, Zhejiang Province, Wenzhou, 325027, P. R. China
| | - Yuexiao Pan
- Nanomaterials and Chemistry Key Laboratory, Faculty of Chemistry and Materials Engineering, Wenzhou University, Zhejiang Province, Wenzhou, 325027, P. R. China
| | - Chengdong Peng
- Nanomaterials and Chemistry Key Laboratory, Faculty of Chemistry and Materials Engineering, Wenzhou University, Zhejiang Province, Wenzhou, 325027, P. R. China
| | - Hongzhou Lian
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Jun Lin
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
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12
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Zhu H, Pan Y, Peng C, Lian H, Lin J. 4‐Bromo‐Butyric Acid‐Assisted In Situ Passivation Strategy for Superstable All‐Inorganic Halide Perovskite CsPbX
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Quantum Dots in Polar Media. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hong Zhu
- Nanomaterials and Chemistry Key Laboratory Faculty of Chemistry and Materials Engineering Wenzhou University Zhejiang Province Wenzhou 325027 P. R. China
| | - Yuexiao Pan
- Nanomaterials and Chemistry Key Laboratory Faculty of Chemistry and Materials Engineering Wenzhou University Zhejiang Province Wenzhou 325027 P. R. China
| | - Chengdong Peng
- Nanomaterials and Chemistry Key Laboratory Faculty of Chemistry and Materials Engineering Wenzhou University Zhejiang Province Wenzhou 325027 P. R. China
| | - Hongzhou Lian
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China
| | - Jun Lin
- State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 P. R. China
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13
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Lee H, Trinh CK, So MG, Lee CL. Sequential structural degradation of red perovskite quantum dots and its prevention by introducing iodide at a stable gradient concentration into the core-shell red perovskite quantum dots. NANOSCALE 2022; 14:3425-3440. [PMID: 35029623 DOI: 10.1039/d1nr07152a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Perovskite quantum dots (QDs) have been extensively studied as emissive materials for next-generation optoelectronics due to their outstanding optical properties; however, their structural instabilities, specifically those of red perovskite QDs, are critical obstacles in realizing operationally reliable perovskite QD-based optoelectronic devices. Accordingly, herein, we investigated the sequential degradation mechanism of red perovskite QDs upon their exposure to an electric field. Via electrical and chemical characterization, we demonstrated that degradation occurred in the following order: anion-defect-assisted halide migration, cation-defect-assisted migration of I-/Cs+ ions, defective gradient I ion distribution, structural distortion, and ion transport/I2 vaporization with defect proliferation. Among these steps, the defective gradient I ion distribution is the key process in the structural degradation of perovskite QDs. Based on our findings, we designed perovskite/SiO2 core-shell QDs with stable gradient I concentrations. Most notably, the operational stabilities of perovskite QD-light-emitting diodes (PeLEDs) fabricated using the perovskite/SiO2 core-shell QDs were approximately 5000 times those of the PeLEDs constructed using pristine perovskite QDs.
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Affiliation(s)
- Hanleem Lee
- Advanced Photonics Research Institute (APRI), Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea.
- Department of Chemistry, Myongji University, 116 Myongji Ro, Yongin, Gyeonggi-do, 17058, Republic of Korea
- The Natural Science Research Institute, Myongji University, 116 Myongji Ro, Yongin, Gyeonggi-do, 17058, South Korea
| | - Cuc Kim Trinh
- Advanced Photonics Research Institute (APRI), Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea.
| | - Mo Geun So
- Advanced Photonics Research Institute (APRI), Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea.
| | - Chang-Lyoul Lee
- Advanced Photonics Research Institute (APRI), Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea.
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14
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Zhang Y, Liang Z, Ni L, Huang L, Yang Y, Xiao Y. Enhanced Stability and Luminous Performance for Structured Mn‐Doped CsPbCl
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Quantum Dots. ChemistrySelect 2021. [DOI: 10.1002/slct.202102529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yang Zhang
- School of Materials and Energy Guangdong University of Technology Guangzhou 510006 China
| | - Zhenyao Liang
- School of Materials and Energy Guangdong University of Technology Guangzhou 510006 China
| | - Liang Ni
- School of Materials and Energy Guangdong University of Technology Guangzhou 510006 China
| | - Le Huang
- School of Materials and Energy Guangdong University of Technology Guangzhou 510006 China
| | - Yibin Yang
- School of Materials and Energy Guangdong University of Technology Guangzhou 510006 China
| | - Ye Xiao
- School of Materials and Energy Guangdong University of Technology Guangzhou 510006 China
- Guangdong Provincial Key Laboratory of Information Photonics Technolology Guangdong University of Technology Guangzhou 510006 China
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15
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Lead-free Cs2SnX6 (X = Cl, Br, I) nanocrystals in mesoporous SiO2 with more stable emission from VIS to NIR light. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.139023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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