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Zhang X, Zhang S, Ren Z, Wang S, Liu H, Wang P, Huang Z, Li R, Chen R. Recent advances toward intraoctahedral phase change in metal halide perovskite nanomaterials. iScience 2024; 27:110794. [PMID: 39297174 PMCID: PMC11408066 DOI: 10.1016/j.isci.2024.110794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/21/2024] Open
Abstract
Metal halide perovskite nanomaterials (PeNMs) are among the next generation of optoelectronic materials due to their unique crystal structure and diverse phase change behaviors, which have the potential to dynamically tune the device performances. In this review, the research progress on the phase change of PeNMs is comprehensively reviewed and summarized. First, the basic structure and composition, as well as the phase change mechanism are introduced. Then, the influence of the phase change on the optoelectronic properties of PeNMs is discussed in detail, including the regulation of the energy band structure, carrier transport properties, lattice strain and distortion, and the evolution of the photoexcited state. Finally, current challenges and future development trends are projected. This review promotes the understanding of the phase change of PeNMs, which will be useful for the innovative design and application of related optoelectronic devices.
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Affiliation(s)
- Xuanyu Zhang
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P.R. China
| | - Samo Zhang
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P.R. China
| | - Zhiyuan Ren
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P.R. China
| | - Shan Wang
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P.R. China
- State Key Laboratory of High Power Semiconductor Laser, School of Physics, Changchun University of Science and Technology, Changchun, Jilin 130022, P.R. China
| | - Huan Liu
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P.R. China
| | - Puning Wang
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P.R. China
- State Key Laboratory of High Power Semiconductor Laser, School of Physics, Changchun University of Science and Technology, Changchun, Jilin 130022, P.R. China
| | - Zhihao Huang
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P.R. China
- School of Electrical and Information Engineering, Guangxi University of Science and Technology, Liuzhou, Guangxi 545006, China
| | - Ruxue Li
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P.R. China
- School of Electrical and Information Engineering, Guangxi University of Science and Technology, Liuzhou, Guangxi 545006, China
| | - Rui Chen
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, P.R. China
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Singha PK, Mukhopadhyay T, Tarif E, Ali F, Datta A. Competition among recombination pathways in single FAPbBr3 nanocrystals. J Chem Phys 2024; 161:054704. [PMID: 39087543 DOI: 10.1063/5.0205940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 07/02/2024] [Indexed: 08/02/2024] Open
Abstract
Single particle level microscopy of immobilized FAPbBr3 nanocrystals (NCs) has elucidated the involvement of different processes in their photoluminescence (PL) intermittency. Four different blinking patterns are observed in the data from more than 100 NCs. The dependence of PL decays on PL intensities brought out in fluorescence lifetime intensity distribution (FLID) plots is rationalized by the interplay of exciton- and trion-mediated recombinations along with hot carrier (HC) trapping. The high intensity-long lifetime component is attributed to neutral exciton recombination, the low intensity-short lifetime component is attributed to trion assisted recombination, and the low intensity-long lifetime component is attributed to hot carrier recombination. Change-point analysis (CPA) of the PL blinking data reveals the involvement of multiple intermediate states. Truncated power law distribution is found to be more appropriate than power law and lognormal distribution for on and off events. Probability distributions of PL trajectories of single NCs are obtained for two different excitation fluences and wavelengths (λex = 400, 440 nm). Trapping rate (kT) prevails at higher power densities for both excitation wavelengths. From a careful analysis of the FLID and probability distributions, it is concluded that there is competition between the HC and trion assisted blinking pathways and that the contribution of these mechanisms varies with excitation wavelength as well as fluence.
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Affiliation(s)
- Prajit Kumar Singha
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Tamoghna Mukhopadhyay
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Ejaj Tarif
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Fariyad Ali
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Anindya Datta
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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Wang Y, Wang S, Li R, Li W, Long T, Wang L, Kong L, Cao F, Wu Q, Jia G, Yang X. Quantum-Confined Perovskite Nanocrystals Enabled by Negative Catalyst Strategy for Efficient Light-Emitting Diodes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2402825. [PMID: 38990086 DOI: 10.1002/smll.202402825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 06/11/2024] [Indexed: 07/12/2024]
Abstract
The perovskite nanocrystals (PeNCs) are emerging as a promising emitter for light-emitting diodes (LEDs) due to their excellent optical and electrical properties. However, the ultrafast growth of PeNCs often results in large sizes exceeding the Bohr diameter, leading to low exciton binding energy and susceptibility to nonradiative recombination, while small-sized PeNCs exhibit a large specific surface area, contributing to an increased defect density. Herein, Zn2+ ions as a negative catalyst to realize quantum-confined FAPbBr3 PeNCs with high photoluminescence quantum yields (PL QY) over 90%. Zn2+ ions exhibit robust coordination with Br- ions is introduced, effectively retarding the participation of Br- ions in the perovskite crystallization process and thus facilitating PeNCs size control. Notably, Zn2+ ions neither incorporate into the perovskite lattice nor are absorbed on the surface of PeNCs. And the reduced growth rate also promotes sufficient octahedral coordination of PeNC that reduces defect density. The LEDs based on these optimized PeNCs exhibits an external quantum efficiency (EQE) of 21.7%, significantly surpassing that of the pristine PeNCs (15.2%). Furthermore, the device lifetime is also extended by twofold. This research presents a novel approach to achieving high-performance optoelectronic devices.
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Affiliation(s)
- Yuankun Wang
- Xinjiang Key Laboratory of Solid State Physics and Devices, Xinjiang University, Urumqi, 830017, P. R. China
| | - Sheng Wang
- Key Laboratory of Advanced Display and System Applications of Ministry of Education, Shanghai University, 149 Yanchang Road, Shanghai, 200072, P. R. China
| | - Rui Li
- Xinjiang Key Laboratory of Solid State Physics and Devices, Xinjiang University, Urumqi, 830017, P. R. China
| | - Wenqiang Li
- Key Laboratory of Advanced Display and System Applications of Ministry of Education, Shanghai University, 149 Yanchang Road, Shanghai, 200072, P. R. China
| | - Tengfei Long
- Xinjiang Key Laboratory of Solid State Physics and Devices, Xinjiang University, Urumqi, 830017, P. R. China
| | - Lin Wang
- Key Laboratory of Advanced Display and System Applications of Ministry of Education, Shanghai University, 149 Yanchang Road, Shanghai, 200072, P. R. China
| | - Lingmei Kong
- Key Laboratory of Advanced Display and System Applications of Ministry of Education, Shanghai University, 149 Yanchang Road, Shanghai, 200072, P. R. China
| | - Fan Cao
- Key Laboratory of Advanced Display and System Applications of Ministry of Education, Shanghai University, 149 Yanchang Road, Shanghai, 200072, P. R. China
| | - Qianqian Wu
- Key Laboratory of Advanced Display and System Applications of Ministry of Education, Shanghai University, 149 Yanchang Road, Shanghai, 200072, P. R. China
| | - Guohua Jia
- School of Molecular and Life Sciences, Curtin University, Bentley, Western Australia, 6102, Australia
| | - Xuyong Yang
- Key Laboratory of Advanced Display and System Applications of Ministry of Education, Shanghai University, 149 Yanchang Road, Shanghai, 200072, P. R. China
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Clinckemalie L, Pradhan B, Brande RV, Zhang H, Vandenwijngaerden J, Saha RA, Romolini G, Sun L, Vandenbroucke D, Bonn M, Wang HI, Debroye E. Phase-engineering compact and flexible CsPbBr 3 microcrystal films for robust X-ray detection. JOURNAL OF MATERIALS CHEMISTRY. C 2024; 12:655-663. [PMID: 38188498 PMCID: PMC10766070 DOI: 10.1039/d3tc01903a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 12/08/2023] [Indexed: 01/09/2024]
Abstract
All-inorganic CsPbBr3 perovskites have gained significant attention due to their potential in direct X-ray detection. The fabrication of stable, pinhole-free thick films remains challenging, hindering their integration in durable, large-area high-resolution devices. In this study, we propose a facile strategy using a non-conductive polymer to create a flexible, compact thick film under ambient conditions. Furthermore, we investigate the effect of introducing the 2D CsPb2Br5 phase into CsPbBr3 perovskite crystals on their photophysical properties and charge transport. Upon X-ray exposure, the devices consisting of the dual phase exhibit improved stability and more effective operation at higher voltages. Rietveld refinement shows that, due to the presence of the second phase, local distortions and Pb-vacancies are introduced within the CsPbBr3 lattice. This in turn presumably increases the ion migration energy barrier, resulting in a very low dark current and hence, enhanced stability. This feature might benefit local charge extraction and, ultimately, the X-ray image resolution. These findings also suggest that introducing a second phase in the perovskite structure can be advantageous for efficient photon-to-charge carrier conversion, as applied in medical imaging.
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Affiliation(s)
- Lotte Clinckemalie
- Department of Chemistry, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - Bapi Pradhan
- Department of Chemistry, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - Roel Vanden Brande
- Department of Chemistry, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - Heng Zhang
- Max Planck Institute for Polymer Research 55128 Mainz Germany
| | | | - Rafikul Ali Saha
- cMACS, Department of Microbial and Molecular Systems, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - Giacomo Romolini
- Department of Chemistry, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - Li Sun
- Department of Chemistry, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | | | - Mischa Bonn
- Max Planck Institute for Polymer Research 55128 Mainz Germany
| | - Hai I Wang
- Max Planck Institute for Polymer Research 55128 Mainz Germany
| | - Elke Debroye
- Department of Chemistry, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
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Bhatia H, Martin C, Keshavarz M, Dovgaliuk I, Schrenker NJ, Ottesen M, Qiu W, Fron E, Bremholm M, Van de Vondel J, Bals S, Roeffaers MBJ, Hofkens J, Debroye E. Deciphering the Role of Water in Promoting the Optoelectronic Performance of Surface-Engineered Lead Halide Perovskite Nanocrystals. ACS APPLIED MATERIALS & INTERFACES 2023; 15:7294-7307. [PMID: 36705637 DOI: 10.1021/acsami.2c20605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Lead halide perovskites are promising candidates for high-performance light-emitting diodes (LEDs); however, their applicability is limited by their structural instability toward moisture. Although a deliberate addition of water to the precursor solution has recently been shown to improve the crystallinity and optical properties of perovskites, the corresponding thin films still do not exhibit a near-unity quantum yield. Herein, we report that the direct addition of a minute amount of water to post-treated formamidinium lead bromide (FAPbBr3) nanocrystals (NCs) substantially enhances the stability while achieving a 95% photoluminescence quantum yield in a NC thin film. We unveil the mechanism of how moisture assists in the formation of an additional NH4Br component. Alongside, we demonstrate the crucial role of moisture in assisting localized etching of the perovskite crystal, facilitating the partial incorporation of NH4+, which is key for improved performance under ambient conditions. Finally, as a proof-of-concept, the application of post-treated and water-treated perovskites is tested in LEDs, with the latter exhibiting a superior performance, offering opportunities toward commercial application in moisture-stable optoelectronics.
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Affiliation(s)
- Harshita Bhatia
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001Leuven, Belgium
| | - Cristina Martin
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001Leuven, Belgium
- Department of Physical Chemistry, Faculty of Pharmacy, University of Castilla-La Mancha, C/ José María Sánchez Ibañez s/n, 02071Albacete, Spain
| | - Masoumeh Keshavarz
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001Leuven, Belgium
| | - Iurii Dovgaliuk
- Institut des Matériaux Poreux de Paris, Ecole Normale Supérieure, ESPCI Paris, CNRS, PSL Université, 75005Paris, France
| | - Nadine J Schrenker
- Electron Microscopy for Materials Science (EMAT) and NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, B-2020Wilrijk, Belgium
| | - Martin Ottesen
- Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, 8000Aarhus C, Denmark
| | - Weiming Qiu
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001Leuven, Belgium
| | - Eduard Fron
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001Leuven, Belgium
| | - Martin Bremholm
- Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, 8000Aarhus C, Denmark
| | - Joris Van de Vondel
- Quantum Solid-State Physics (QSP), Department of Physics and Astronomy, KU Leuven, Celestijnenlaan 200D, Leuven3001, Belgium
| | - Sara Bals
- Electron Microscopy for Materials Science (EMAT) and NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, B-2020Wilrijk, Belgium
| | - Maarten B J Roeffaers
- cMACS, Department of Microbial and Molecular Systems, KU Leuven, 3001Leuven, Belgium
| | - Johan Hofkens
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001Leuven, Belgium
| | - Elke Debroye
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001Leuven, Belgium
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