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Wang S, Chen H, Xu Y, Peng G, Wang H, Li Q, Zhou X, Li Z, Wang Q, Jin Z. Organic Cation Modulation in Manganese Halides to Optimize Crystallization Process and X-Ray Response Toward Large-Area Scintillator Screen. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2403234. [PMID: 38963174 DOI: 10.1002/smll.202403234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 06/27/2024] [Indexed: 07/05/2024]
Abstract
Manganese halides are one of the most potential candidates for large-area flat-panel detection owing to their biological safety and all-solution preparation. However, reducing photon scattering and enhancing the efficient luminescence of scintillator screens remains a challenge due to their uncontrollable crystallization and serious nonradiative recombination. Herein, an organic cation modulation is reported to control the crystallization process and enhance the luminescence properties of manganese halides. Given the industrial requirements of the X-ray flat-panel detector, the large-area A2MnBr4 screen (900 cm2) with excellent uniformity is blade-coated at 60 °C. Theoretical calculations and in situ measurements reveal that organic cations with larger steric hindrance can slow down the crystallization of the screen, thus neatening the crystal arrangement and reducing the photon scattering. Moreover, larger steric hindrance can also endow the material with higher exciton binding energy, which is beneficial for restraining nonradiative recombination. Therefore, the BPP2MnBr4 (BPP = C25H22P+) screen with larger steric hindrance exhibits a superior spatial resolution (>20 lp mm-1) and ultra-low detection limit (< 250 nGyair s-1). This is the first time steric hindrance modulation is used in blade-coated scintillator screens, and it believes this study will provide some guidance for the development of high-performance manganese halide scintillators.
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Affiliation(s)
- Shuo Wang
- School of Physical Science and Technology & Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Huanyu Chen
- School of Physical Science and Technology & Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Youkui Xu
- School of Physical Science and Technology & Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Guoqiang Peng
- School of Physical Science and Technology & Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Haoxu Wang
- School of Physical Science and Technology & Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Qijun Li
- School of Mechanical Engineering, Yangzhou University, Yangzhou, 225009, P. R. China
| | - Xufeng Zhou
- School of Material Science and Engineering, Liaocheng University, Liaocheng, 252000, P. R. China
| | - ZhenHua Li
- School of Physical Science and Technology & Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Qian Wang
- School of Physical Science and Technology & Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Zhiwen Jin
- School of Physical Science and Technology & Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou, 730000, P. R. China
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Li M, Huang P, Zhong H. Current Understanding of Band-Edge Properties of Halide Perovskites: Urbach Tail, Rashba Splitting, and Exciton Binding Energy. J Phys Chem Lett 2023; 14:1592-1603. [PMID: 36749031 DOI: 10.1021/acs.jpclett.2c03525] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The band-edge structure of halide perovskites, derived from the hybridization of atomic orbitals, plays a fundamental role in determining their optical and electronic properties. Several important concepts have been frequently discussed to describe the influence of band-edge structure on their optoelectronic properties, including Urbach tail, Rashba splitting, and exciton binding energy. In this Perspective, we provide a fundamental understanding of these concepts, with the focus on their dependence on composition, structure, or dimensionality. Subsequently, the implications for material optimization and device fabrication are discussed. Furthermore, we highlight the Rashba effect on the exciton fine structure in perovskite nanocrystals (PNCs), which explains the unique emissive properties. Finally, we discuss the potential influence of band-edge properties on the light emission process. We hope that this Perspective can inspire the investigation of band-edge properties of halide perovskites for light-emitting diodes, lasers, and spin electronics.
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Affiliation(s)
- Menglin Li
- MIIT Key Laboratory for Low-Dimensional Quantum Structure and Devices, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Peng Huang
- MIIT Key Laboratory for Low-Dimensional Quantum Structure and Devices, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Haizheng Zhong
- MIIT Key Laboratory for Low-Dimensional Quantum Structure and Devices, School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China
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Feng C, Zhao Q, Wu C, Luo X, Li S, Li D, Tang G, Zhang G. Theoretical Prediction of Mixed-Valence Layered Halide Perovskites Cs 4M(IV)M(II) 2X 12 (M = Ge, Sn; X = Cl, Br). J Phys Chem Lett 2022; 13:1077-1084. [PMID: 35077165 DOI: 10.1021/acs.jpclett.1c03719] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Charge-ordered compounds (i.e., Cu+/Cu2+, Au+/Au3+, In+/In3+, Tl+/Tl3+, Sb3+/Sb5+, and Bi3+/Bi5+) have been widely explored because of their unique physical properties. Here, a new class of ⟨111⟩-oriented mixed-valence layered halide perovskites Cs4M(IV)M(II)2X12 (M = Ge, Sn; X = Cl, Br) with C2/m, R-3m, and I41/amd space groups was predicted by first-principles calculations. Based on the decomposition enthalpy, the phonon spectrum, and the mechanical stability criteria, we found that Cs4GeGe2Cl12 (C2/m and R-3m), Cs4GeGe2Br12 (R-3m), and Cs4GeGe2Br6Cl6 (R-3m) exhibit thermodynamic, dynamical, and mechanical stability. The electronic structure calculations show that the predicted band gap of stable Cs4Ge(IV)Ge(II)2X12 varies from 1.16 to 2.25 eV. And an isolated intermediate conduction band contributed by the Ge(IV) 4s states below the Ge(II)/Ge(IV) 4p states is observed in these compounds, which is similar to previously reported Cs4CuSb2Cl12 but different from Cs4CdM(III)2Cl12 (M = Sb, Bi). In addition, the calculated static dielectric constant and optical absorption coefficient of Cs4GeGe2Br12 are close to those of typical double perovskites (e.g., Cs2AgBiBr6). We believe that our work enriches the family of mixed-valence halide perovskites and provides a new platform for potential optoelectronic semiconductor design.
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Affiliation(s)
- Chunbao Feng
- School of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
- Institute for Advanced Sciences, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Qing Zhao
- School of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Changhe Wu
- School of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Xin Luo
- School of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Shichang Li
- School of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
- Institute for Advanced Sciences, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Dengfeng Li
- School of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
- Institute for Advanced Sciences, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Gang Tang
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing 100081, China
| | - Gang Zhang
- Institute of High Performance Computing, A*STAR, 138632, Singapore
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Zhong H, Feng C, Wang H, Han D, Yu G, Xiong W, Li Y, Yang M, Tang G, Yuan S. Structure-Composition-Property Relationships in Antiperovskite Nitrides: Guiding a Rational Alloy Design. ACS APPLIED MATERIALS & INTERFACES 2021; 13:48516-48524. [PMID: 34612037 DOI: 10.1021/acsami.1c10137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The alloy strategy through the A- or X-site is a common method for experimental preparation of high-performance and stable lead-based perovskite solar cells. As one of the important candidates for lead-free and stable photovoltaic absorbers, the inorganic antiperovskite family has recently been reported to exhibit excellent optoelectronic properties. However, the current reports on the design of antiperovskite alloys are rare. In this work, we investigated the previously overlooked electronic property (e.g., conduction band convergence), static dielectric constant, and exciton binding energy in inorganic antiperovskite nitrides by first-principles calculations. Then, we revealed a linear relationship between the tolerance factor and various physical quantities. Guided by the established structure-composition-property relationship in six antiperovskite nitrides X3NA (X2+ = Mg2+, Ca2+, Sr2+; A3- = P3-, As3-, Sb3-, Bi3-), for the first time, we designed a promising antiperovskite alloy Mg3NAs0.5Bi0.5 with a quasi-direct band gap of 1.402 eV. Finally, we made a comprehensive comparison between antiperovskite nitrides and conventional halide perovskites for pointing out the future direction for device applications.
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Affiliation(s)
- Hongxia Zhong
- School of Mathematics and Physics, China University of Geosciences (Wuhan), Wuhan 430074, China
- School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Chunbao Feng
- School of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Hai Wang
- School of Mathematics and Physics, China University of Geosciences (Wuhan), Wuhan 430074, China
| | - Dan Han
- Department of Chemie, Ludwig-Maximilians-Universität München, München 81377, Germany
| | - Guodong Yu
- School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Wenqi Xiong
- School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Yunhai Li
- School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Mao Yang
- Institut für Physik and IRIS Adlershof, Humboldt-Universität zu Berlin, Berlin 12489, Germany
- School of Science, Xi'an Polytechnic University, Xi'an 710048, China
| | - Gang Tang
- Theoretical Materials Physics, Q-MAT, CESAM, University of Liège, B-4000 Liège, Belgium
| | - Shengjun Yuan
- School of Physics and Technology, Wuhan University, Wuhan 430072, China
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Arandiyan H, S Mofarah S, Sorrell CC, Doustkhah E, Sajjadi B, Hao D, Wang Y, Sun H, Ni BJ, Rezaei M, Shao Z, Maschmeyer T. Defect engineering of oxide perovskites for catalysis and energy storage: synthesis of chemistry and materials science. Chem Soc Rev 2021; 50:10116-10211. [PMID: 34542117 DOI: 10.1039/d0cs00639d] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Oxide perovskites have emerged as an important class of materials with important applications in many technological areas, particularly thermocatalysis, electrocatalysis, photocatalysis, and energy storage. However, their implementation faces numerous challenges that are familiar to the chemist and materials scientist. The present work surveys the state-of-the-art by integrating these two viewpoints, focusing on the critical role that defect engineering plays in the design, fabrication, modification, and application of these materials. An extensive review of experimental and simulation studies of the synthesis and performance of oxide perovskites and devices containing these materials is coupled with exposition of the fundamental and applied aspects of defect equilibria. The aim of this approach is to elucidate how these issues can be integrated in order to shed light on the interpretation of the data and what trajectories are suggested by them. This critical examination has revealed a number of areas in which the review can provide a greater understanding. These include considerations of (1) the nature and formation of solid solutions, (2) site filling and stoichiometry, (3) the rationale for the design of defective oxide perovskites, and (4) the complex mechanisms of charge compensation and charge transfer. The review concludes with some proposed strategies to address the challenges in the future development of oxide perovskites and their applications.
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Affiliation(s)
- Hamidreza Arandiyan
- Laboratory of Advanced Catalysis for Sustainability, School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia. .,Centre for Applied Materials and Industrial Chemistry (CAMIC), School of Science, RMIT University, 124 La Trobe Street, Melbourne, VIC, Australia.
| | - Sajjad S Mofarah
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia.
| | - Charles C Sorrell
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia.
| | - Esmail Doustkhah
- National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Baharak Sajjadi
- Department of Chemical Engineering, University of Mississippi, University, MS, 38677, USA
| | - Derek Hao
- School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Yuan Wang
- Centre for Applied Materials and Industrial Chemistry (CAMIC), School of Science, RMIT University, 124 La Trobe Street, Melbourne, VIC, Australia. .,School of Chemistry, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Hongyu Sun
- Department of Micro- and Nanotechnology, Technical University of Denmark, Kongens Lyngby 2800, Denmark
| | - Bing-Jie Ni
- School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Mehran Rezaei
- Catalyst and Nanomaterials Research Laboratory (CNMRL), School of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Tehran, Iran
| | - Zongping Shao
- WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Perth, WA 6845, Australia. .,State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 210009, China
| | - Thomas Maschmeyer
- Laboratory of Advanced Catalysis for Sustainability, School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia.
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Tang G, Ghosez P, Hong J. Band-Edge Orbital Engineering of Perovskite Semiconductors for Optoelectronic Applications. J Phys Chem Lett 2021; 12:4227-4239. [PMID: 33900763 DOI: 10.1021/acs.jpclett.0c03816] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Lead (Pb) halide perovskites have achieved great success in recent years because of their excellent optoelectronic properties, which is largely attributed to the lone-pair s orbital-derived antibonding states at the valence band edge. Guided by the key band-edge orbital character, a series of ns2-containing (i.e., Sn2+, Sb3+, and Bi3+) Pb-free perovskite alternatives have been explored as potential photovoltaic candidates. On the other hand, based on the band-edge orbital components (i.e., M2+ s and p/X- p orbitals), a series of strategies have been proposed to optimize their optoelectronic properties by modifying the atomic orbitals and orbital interactions. Therefore, understanding the band-edge electronic features from the recently reported halide perovskites is essential for future material design and device optimization. This Perspective first attempts to establish the band-edge orbital-property relationship using a chemically intuitive approach and then rationalizes their superior properties and explains the trends in electronic properties. We hope that this Perspective will provide atomic-level guidance and insights toward the rational design of perovskite semiconductors with outstanding optoelectronic properties.
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Affiliation(s)
- Gang Tang
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China
- Theoretical Materials Physics, Q-MAT, CESAM, University of Liège, Liège B-4000, Belgium
| | - Philippe Ghosez
- Theoretical Materials Physics, Q-MAT, CESAM, University of Liège, Liège B-4000, Belgium
| | - Jiawang Hong
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China
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Intrinsic carbon-doping induced synthesis of oxygen vacancies-mediated TiO2 nanocrystals: Enhanced photocatalytic NO removal performance and mechanism. J Catal 2021. [DOI: 10.1016/j.jcat.2020.11.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Li Y, Yang K. High‐throughput computational design of halide perovskites and beyond for optoelectronics. WIRES COMPUTATIONAL MOLECULAR SCIENCE 2020. [DOI: 10.1002/wcms.1500] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Yuheng Li
- Department of NanoEngineering and Program of Chemical Engineering University of California San Diego La Jolla California USA
| | - Kesong Yang
- Department of NanoEngineering and Program of Chemical Engineering University of California San Diego La Jolla California USA
- Program of Materials Science and Engineering University of California San Diego La Jolla California USA
- Center for Memory and Recording Research University of California San Diego La Jolla California USA
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Abstract
Lead halide perovskites have gained more and more attention because of their ease of synthesis and excellent photoelectric properties including a large absorption coefficient, long carrier lifetime, long carrier diffusion length, and high carrier mobility. However, their toxicity, instability, and phase degradation in ambient environments impede their large-scale applications. To address these concerns, it is desirable to find stable alternative halide perovskites without toxicity and with comparable optoelectronic properties to lead-based perovskites. Over the years, a considerable number of lead-free halide perovskites have been added to this family of materials, including A2B’B’’X6, A2BX6, and A3B2X9 type perovskites. Among these, double perovskites with the general formula A2B’B’’X6 are deemed to be a potential alternative to lead halide perovskites as they possess good stability under ambient conditions and excellent optoelectronic properties. In this review, recent progress in exploring Pb-free halide double perovskites is highlighted. The synthesis, composition-tuning, physical properties, and applications of representative 3D, 2D, and nanocrystal A2B’B’’X6 double perovskites are introduced. In addition, perspectives about current challenges and solutions in this field are also provided.
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