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Zhang C, Wang M, Shi J, Wang J, Da Z, Zhou Y, Xu Y, Gaponenko NV, Bhatti AS. Preparation of CsPb(Cl/Br) 3/TiO 2:Eu 3+ composites for white light emitting diodes. Front Chem 2023; 11:1199863. [PMID: 37273508 PMCID: PMC10235637 DOI: 10.3389/fchem.2023.1199863] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 05/11/2023] [Indexed: 06/06/2023] Open
Abstract
The inherent single narrow emission peak and fast anion exchange process of cesium lead halide perovskite CsPbX3 (X = Cl, Br, I) nanocrystals severely limited its application in white light-emitting diodes. Previous studies have shown that composite structures can passivate surface defects of NCs and improve the stability of perovskite materials, but complex post-treatment processes commonly lead to dissolution of NCs. In this study, CsPb(Cl/Br)3 NCs was in-situ grown in TiO2 hollow shells doped with Eu3+ ions by a modified thermal injection method to prepare CsPb(Cl/Br)3/TiO2:Eu3+ composites with direct excitation of white light without additional treatment. Among them, the well-crystalline TiO2 shells acted as both a substrate for the dopant, avoiding the direct doping of Eu3+ into the interior of NCs to affect the crystal structure of the perovskite materials, and also as a protection layer to isolate the contact between PL quenching molecules and NCs, which significantly improves the stability. Further, the WLED prepared using the composites had bright white light emission, luminous efficiency of 87.39 lm/W, and long-time operating stability, which provided new options for the development of perovskite devices.
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Affiliation(s)
- Chen Zhang
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education International Center for Dielectric Research and Shannxi Engineering Research Center of Advanced Energy Materials and Devices, Xi’an Jiaotong University, Xi’an, China
| | - Minqiang Wang
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education International Center for Dielectric Research and Shannxi Engineering Research Center of Advanced Energy Materials and Devices, Xi’an Jiaotong University, Xi’an, China
| | - Jindou Shi
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education International Center for Dielectric Research and Shannxi Engineering Research Center of Advanced Energy Materials and Devices, Xi’an Jiaotong University, Xi’an, China
| | - Junnan Wang
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education International Center for Dielectric Research and Shannxi Engineering Research Center of Advanced Energy Materials and Devices, Xi’an Jiaotong University, Xi’an, China
| | - Zheyuan Da
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education International Center for Dielectric Research and Shannxi Engineering Research Center of Advanced Energy Materials and Devices, Xi’an Jiaotong University, Xi’an, China
| | - Yun Zhou
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education International Center for Dielectric Research and Shannxi Engineering Research Center of Advanced Energy Materials and Devices, Xi’an Jiaotong University, Xi’an, China
| | - Youlong Xu
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education International Center for Dielectric Research and Shannxi Engineering Research Center of Advanced Energy Materials and Devices, Xi’an Jiaotong University, Xi’an, China
| | | | - Arshad Saleem Bhatti
- Centre for Micro and Nano Devices, Department of Physics, COMSATS Institute of Information Technology, Islamabad, Pakistan
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Guan J, Yang D, Ma J, Shen Y, Xu Q, Hu X. Ultra-stable CsPbBr 3@PbBrOH nanorods for fluorescence labeling application based on methylimidazole-assisted synthesis. J Mater Chem B 2023; 11:1705-1712. [PMID: 36723145 DOI: 10.1039/d2tb02502g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The extension application of perovskites in aqueous media such as bioassays requires the development of a water-stable perovskite with a simple preparation process and low cost. However, the degradation of perovskites in aqueous solution is still a thorny problem. Here, we develop a methylimidazole-assisted two-step synthesis protocol to prepare CsPbBr3@PbBrOH nanorods with superior water stability and remarkable optical properties at room temperature. The synergy of 2-methylimidazole (2-MIM), an N-donor ligand, with water can not only facilitate CsPbBr3 formation and suppress CsPb2Br5 or Cs4PbBr6 formation, but also promote the formation of a PbBrOH shell capping CsPbBr3. 2-MIM is ionized into 2-MIM- in DMF and 2-MIM+ in water. They passivated the surface defects and changed the crystallization environment, leading to water-stable CsPbBr3@PbBrOH. The obtained CsPbBr3@PbBrOH nanorods can still maintain 91% PL intensity after being stored in water for more than 2 months. Furthermore, the CsPbBr3@PbBrOH nanorods show excellent stability in polar solvents, water, and phosphate buffer solution in a wide pH range, as well as better thermal and irradiation stability. In addition, the CsPbBr3@PbBrOH nanorods are further functionalized with polydopamine (PDA) for biomolecular immobilization and immunoassay studies. The resulting assay shows a detection limit of 0.003 ng mL-1 for IgG detection, illustrating important progress towards expanding fluorescence labeling application of perovskite nanomaterials for immunoassays.
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Affiliation(s)
- Jie Guan
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Dandan Yang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Junyi Ma
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Yingzhuo Shen
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Qin Xu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Xiaoya Hu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
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Chen T, Wang C, Xing X, Qin Z, Qin F, Wang Y, Alam MK, Hadjiev VG, Yang G, Ye S, Yang J, Wang R, Yue S, Zhang D, Shang Z, Robles-Hernandez FC, Calderon HA, Wang H, Wang Z, Bao J. Integration of Highly Luminescent Lead Halide Perovskite Nanocrystals on Transparent Lead Halide Nanowire Waveguides through Morphological Transformation and Spontaneous Growth in Water. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2105009. [PMID: 35060296 DOI: 10.1002/smll.202105009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 12/08/2021] [Indexed: 06/14/2023]
Abstract
The integration of highly luminescent CsPbBr3 quantum dots on nanowire waveguides has enormous potential applications in nanophotonics, optical sensing, and quantum communications. On the other hand, CsPb2 Br5 nanowires have also attracted a lot of attention due to their unique water stability and controversial luminescent property. Here, the growth of CsPbBr3 nanocrystals on CsPb2 Br5 nanowires is reported first by simply immersing CsPbBr3 powder into pure water, CsPbBr3- γ Xγ (X = Cl, I) nanocrystals on CsPb2 Br5 -γ Xγ nanowires are then synthesized for tunable light sources. Systematic structure and morphology studies, including in situ monitoring, reveal that CsPbBr3 powder is first converted to CsPb2 Br5 microplatelets in water, followed by morphological transformation from CsPb2 Br5 microplatelets to nanowires, which is a kinetic dissolution-recrystallization process controlled by electrolytic dissociation and supersaturation of CsPb2 Br5 . CsPbBr3 nanocrystals are spontaneously formed on CsPb2 Br5 nanowires when nanowires are collected from the aqueous solution. Raman spectroscopy, combined photoluminescence, and SEM imaging confirm that the bright emission originates from CsPbBr3 -γ Xγ nanocrystals while CsPb2 Br5 -γ Xγ nanowires are transparent waveguides. The intimate integration of nanoscale light sources with a nanowire waveguide is demonstrated through the observation of the wave guiding of light from nanocrystals and Fabry-Perot interference modes of the nanowire cavity.
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Affiliation(s)
- Tao Chen
- National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming, 650091, P. R. China
| | - Chong Wang
- National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming, 650091, P. R. China
| | - Xinxin Xing
- Department of Electrical and Computer Engineering, University of Houston, Houston, TX, 77204, USA
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610054, P. R. China
| | - Zhaojun Qin
- Department of Electrical and Computer Engineering, University of Houston, Houston, TX, 77204, USA
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610054, P. R. China
| | - Fan Qin
- Department of Electrical and Computer Engineering, University of Houston, Houston, TX, 77204, USA
| | - Yanan Wang
- Department of Electrical and Computer Engineering, University of Houston, Houston, TX, 77204, USA
| | - Md Kamrul Alam
- Department of Electrical and Computer Engineering, University of Houston, Houston, TX, 77204, USA
| | - Viktor G Hadjiev
- Department of Mechanical Engineering, University of Houston, Houston, TX, 77204, USA
- Texas Center for Superconductivity, University of Houston, Houston, TX, 77204, USA
| | - Guang Yang
- Department of Electrical and Computer Engineering, University of Houston, Houston, TX, 77204, USA
| | - Shuming Ye
- National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming, 650091, P. R. China
| | - Jie Yang
- National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming, 650091, P. R. China
| | - Rongfei Wang
- National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming, 650091, P. R. China
| | - Shuai Yue
- Department of Electrical and Computer Engineering, University of Houston, Houston, TX, 77204, USA
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610054, P. R. China
| | - Di Zhang
- School of Materials Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Zhongxia Shang
- School of Materials Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Francisco C Robles-Hernandez
- Department of Electrical and Computer Engineering, University of Houston, Houston, TX, 77204, USA
- Mechanical Engineering Technology, University of Houston, Houston, TX, 77204, USA
| | - Hector A Calderon
- Instituto Politecnico Nacional, ESFM-IPN, UPALM, Departamento de Física, Mexico CDMX, 07338, Mexico
| | - Haiyan Wang
- School of Materials Engineering, Purdue University, West Lafayette, IN, 47907, USA
| | - Zhiming Wang
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610054, P. R. China
| | - Jiming Bao
- Department of Electrical and Computer Engineering, University of Houston, Houston, TX, 77204, USA
- Texas Center for Superconductivity, University of Houston, Houston, TX, 77204, USA
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