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Kim M, Kim YJ, Cho YC, Lee S, Kim S, Liermann HP, Lee YH, Lee GW. Simultaneous measurements of volume, pressure, optical images, and crystal structure with a dynamic diamond anvil cell: A real-time event monitoring system. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2023; 94:113904. [PMID: 38015123 DOI: 10.1063/5.0166090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 10/31/2023] [Indexed: 11/29/2023]
Abstract
The dynamic diamond anvil cell (dDAC) technique has attracted great interest because it possibly provides a bridge between static and dynamic compression studies with fast, repeatable, and controllable compression rates. The dDAC can be a particularly useful tool to study the pathways and kinetics of phase transitions under dynamic pressurization if simultaneous measurements of physical quantities are possible as a function of time. We here report the development of a real-time event monitoring (RTEM) system with dDAC, which can simultaneously record the volume, pressure, optical image, and structure of materials during dynamic compression runs. In particular, the volume measurement using both Fabry-Pérot interferogram and optical images facilitates the construction of an equation of state (EoS) using the dDAC in a home-laboratory. We also developed an in-line ruby pressure measurement (IRPM) system to be deployed at a synchrotron x-ray facility. This system provides simultaneous measurements of pressure and x-ray diffraction in low and narrow pressure ranges. The EoSs of ice VI obtained from the RTEM and the x-ray diffraction data with the IRPM are consistent with each other. The complementarity of both RTEM and IRPM systems will provide a great opportunity to scrutinize the detailed kinetic pathways of phase transitions using dDAC.
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Affiliation(s)
- Minju Kim
- Frontier of Extreme Physics, Interdisciplinary Materials Measurement Institute, Korea Research Institute of Standards and Science, Daejeon 34113, Republic of Korea
| | - Yong-Jae Kim
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - Yong Chan Cho
- Frontier of Extreme Physics, Interdisciplinary Materials Measurement Institute, Korea Research Institute of Standards and Science, Daejeon 34113, Republic of Korea
| | - Sooheyong Lee
- Frontier of Extreme Physics, Interdisciplinary Materials Measurement Institute, Korea Research Institute of Standards and Science, Daejeon 34113, Republic of Korea
- Applied Measurement Science, University of Science and Technology, Daejeon, Daejeon 34113, Republic of Korea
| | - Seongheun Kim
- Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Republic of Korea
| | | | - Yun-Hee Lee
- Frontier of Extreme Physics, Interdisciplinary Materials Measurement Institute, Korea Research Institute of Standards and Science, Daejeon 34113, Republic of Korea
| | - Geun Woo Lee
- Frontier of Extreme Physics, Interdisciplinary Materials Measurement Institute, Korea Research Institute of Standards and Science, Daejeon 34113, Republic of Korea
- Applied Measurement Science, University of Science and Technology, Daejeon, Daejeon 34113, Republic of Korea
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Parrey I, Bilican F, Kursun C, Kart HH, Parrey KA. Mechanical Stability and Energy Gap Evolution in Cs-Based Ag, Bi Halide Double Perovskites under High Pressure: A Theoretical DFT Approach. ACS OMEGA 2023; 8:26577-26589. [PMID: 37521658 PMCID: PMC10373459 DOI: 10.1021/acsomega.3c03469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 07/03/2023] [Indexed: 08/01/2023]
Abstract
Due to their intrinsic stability and reduced toxicity, lead-free halide double perovskite semiconductors have become potential alternatives to lead-based perovskites. In the present study, we used density functional theory simulations to investigate the mechanical stability and band gap evolution of double perovskites Cs2AgBiX6 (X = Cl and Br) under an applied pressure. To investigate the pressure-dependent properties, the hydrostatic pressure induced was in the range of 0-100 GPa. The mechanical behaviors indicated that the materials under study are both ductile and mechanically stable and that the induced pressure enhances the ductility. As a result of the induced pressure, the covalent bonds transformed into metallic bonds with a reduction in bond lengths. Electronic properties, energy bands, and electronic density of states were obtained with the hybrid HSE06 functional, including spin-orbit coupling (HSE06 + SOC) calculations. The electronic structure study revealed that Cs2AgBiX6 samples behave as X-Γ indirect gap semiconductors, and the gap reduces with the applied pressure. The pressure-driven samples ultimately transform from the semiconductor to a metallic phase at the given pressure range. Also, the calculations demonstrated that the applied pressure and spin-orbit coupling of the states pushed VBM and CBM toward the Fermi level which caused the evolution of the band gap. The relationship between the structure and band gap demonstrates the potential for designing lead-free inorganic perovskites for optoelectronic applications, including solar cells as well as X-ray detectors.
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Affiliation(s)
- Ismahan
Duz Parrey
- Science
Faculty, Department of Physics, Pamukkale
University, Denizli 20160, Türkiye
| | - Fuat Bilican
- Science
Faculty, Department of Physics, Pamukkale
University, Denizli 20160, Türkiye
| | - Celal Kursun
- Department
of Physics, Faculty of Sciences, Kahramanmaras
Sutcu Imam University, Kahramanmaras 46040, Turkey
| | - Hasan Huseyin Kart
- Science
Faculty, Department of Physics, Aydın
Adnan Menderes University, Aydın 09010, Türkiye
| | - Khursheed Ahmad Parrey
- Department
of Physics, Faculty of Sciences, Kahramanmaras
Sutcu Imam University, Kahramanmaras 46040, Turkey
- Faculty
of Natural Science, Department of Physics, Jamia Millia Islamia, New Delhi 110025, India
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3
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Salzmann CG. Advances in the experimental exploration of water's phase diagram. J Chem Phys 2019; 150:060901. [PMID: 30770019 DOI: 10.1063/1.5085163] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Water's phase diagram displays enormous complexity with currently 17 experimentally confirmed polymorphs of ice and several more predicted computationally. For almost 120 years, it has been a stomping ground for scientific discovery, and ice research has often been a trailblazer for investigations into a wide range of materials-related phenomena. Here, the experimental progress of the last couple of years is reviewed, and open questions as well as future challenges are discussed. The specific topics include (i) the polytypism and stacking disorder of ice I, (ii) the mechanism of the pressure amorphization of ice I, (iii) the emptying of gas-filled clathrate hydrates to give new low-density ice polymorphs, (iv) the effects of acid/base doping on hydrogen-ordering phase transitions as well as (v) the formation of solid solutions between salts and the ice polymorphs, and the effect this has on the appearance of the phase diagram. In addition to continuing efforts to push the boundaries in terms of the extremes of pressure and temperature, the exploration of the "chemical" dimensions of ice research appears to now be a newly emerging trend. It is without question that ice research has entered a very exciting era.
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Affiliation(s)
- Christoph G Salzmann
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
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Li Q, Wang Y, Pan W, Yang W, Zou B, Tang J, Quan Z. High-Pressure Band-Gap Engineering in Lead-Free Cs 2 AgBiBr 6 Double Perovskite. Angew Chem Int Ed Engl 2017; 56:15969-15973. [PMID: 29076230 DOI: 10.1002/anie.201708684] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Revised: 10/21/2017] [Indexed: 01/19/2023]
Abstract
Novel inorganic lead-free double perovskites with improved stability are regarded as alternatives to state-of-art hybrid lead halide perovskites in photovoltaic devices. The recently discovered Cs2 AgBiBr6 double perovskite exhibits attractive optical and electronic features, making it promising for various optoelectronic applications. However, its practical performance is hampered by the large band gap. In this work, remarkable band gap narrowing of Cs2 AgBiBr6 is, for the first time, achieved on inorganic photovoltaic double perovskites through high pressure treatments. Moreover, the narrowed band gap is partially retainable after releasing pressure, promoting its optoelectronic applications. This work not only provides novel insights into the structure-property relationship in lead-free double perovskites, but also offers new strategies for further development of advanced perovskite devices.
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Affiliation(s)
- Qian Li
- Department of Chemistry, Southern University of Science and Technology, SUSTech, Shenzhen, Guangdong, 518055, P.R. China
- College of Chemistry, Nankai University, Tianjin, 300071, P.R. China
| | - Yonggang Wang
- High Pressure Synergetic Consortium, HPSynC, Geophysical Laboratory, Carnegie Institution of Washington, Argonne, IL 60439, USA
| | - Weicheng Pan
- Wuhan National Laboratory for Optoelectronics, WNLO and School of Optical and Electronic Information, Huazhong University of Science and Technology, HUST, Wuhan, 430074, P.R. China
| | - Wenge Yang
- High Pressure Synergetic Consortium, HPSynC, Geophysical Laboratory, Carnegie Institution of Washington, Argonne, IL 60439, USA
| | - Bo Zou
- State Key Laboratory of Superhard Materials, Jilin University, Changchun, 130012, P.R. China
| | - Jiang Tang
- Wuhan National Laboratory for Optoelectronics, WNLO and School of Optical and Electronic Information, Huazhong University of Science and Technology, HUST, Wuhan, 430074, P.R. China
| | - Zewei Quan
- Department of Chemistry, Southern University of Science and Technology, SUSTech, Shenzhen, Guangdong, 518055, P.R. China
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Li Q, Wang Y, Pan W, Yang W, Zou B, Tang J, Quan Z. High-Pressure Band-Gap Engineering in Lead-Free Cs2
AgBiBr6
Double Perovskite. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708684] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Qian Li
- Department of Chemistry; Southern University of Science and Technology, SUSTech; Shenzhen Guangdong 518055 P.R. China
- College of Chemistry; Nankai University; Tianjin 300071 P.R. China
| | - Yonggang Wang
- High Pressure Synergetic Consortium, HPSynC, Geophysical Laboratory; Carnegie Institution of Washington; Argonne IL 60439 USA
| | - Weicheng Pan
- Wuhan National Laboratory for Optoelectronics, WNLO and School of Optical and Electronic Information; Huazhong University of Science and Technology, HUST; Wuhan 430074 P.R. China
| | - Wenge Yang
- High Pressure Synergetic Consortium, HPSynC, Geophysical Laboratory; Carnegie Institution of Washington; Argonne IL 60439 USA
| | - Bo Zou
- State Key Laboratory of Superhard Materials; Jilin University; Changchun 130012 P.R. China
| | - Jiang Tang
- Wuhan National Laboratory for Optoelectronics, WNLO and School of Optical and Electronic Information; Huazhong University of Science and Technology, HUST; Wuhan 430074 P.R. China
| | - Zewei Quan
- Department of Chemistry; Southern University of Science and Technology, SUSTech; Shenzhen Guangdong 518055 P.R. China
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