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Arya M, Bhumla P, Sheoran S, Bhattacharya S. Rashba and Dresselhaus effects in doped methylammonium lead halide perovskite MAPbI 3. Phys Chem Chem Phys 2024; 26:10419-10426. [PMID: 38502185 DOI: 10.1039/d3cp04334g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
Inorganic-organic lead halide perovskites, particularly methylammonium lead halide (MAPbI3) perovskite, have been regarded as promising materials for optoelectronics and spintronics. However, the practical applications of these perovskites are limited by lead toxicity and instability under air and pressure. This study investigates the substitution of Pb with Sn and Ge in cubic MAPbI3 perovskite. The properties of the resulting hybrid perovskites are compared using state-of-the-art first-principles-based methodologies, viz., density functional theory (DFT) with generalized gradient approximation (PBE) and hybrid functional (HSE06), in conjunction with spin-orbit coupling (SOC). Here, we mainly study the Rashba-Dresselhaus (RD) effect, which arises due to two major mechanisms: (i) the breaking of inversion symmetry (static and dynamic) and (ii) SOC, originating from the presence of heavy elements. We find significant spin-splitting effects in the conduction band minimum and valence band maximum for hybrid perovskites. To gain a deeper understanding of the observed spin-splitting, the spin textures are analyzed, and Rashba coefficients are calculated. We find that the Dresselhaus effect comes into play in substituted hybrid structures in addition to the usual Rashba effect observed in the pristine compound. Additionally, we observe that the strength of Rashba spin-splitting is substantially tuned by the application of uniaxial strain (±5%). Moreover, certain hybrid perovskites exhibit mechanical stability and ductility, making them potential candidates in perovskite-based optoelectronics and spintronics applications.
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Affiliation(s)
- Megha Arya
- Department of Physics, Indian Institute of Technology Delhi, New Delhi, India.
| | - Preeti Bhumla
- Department of Physics, Indian Institute of Technology Delhi, New Delhi, India.
| | - Sajjan Sheoran
- Department of Physics, Indian Institute of Technology Delhi, New Delhi, India.
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Zhu J, Ren Q, Chen C, Wang C, Shu M, He M, Zhang C, Le MD, Torri S, Wang CW, Wang J, Cheng Z, Li L, Wang G, Jiang Y, Wu M, Qu Z, Tong X, Chen Y, Zhang Q, Ma J. Vacancies tailoring lattice anharmonicity of Zintl-type thermoelectrics. Nat Commun 2024; 15:2618. [PMID: 38521767 PMCID: PMC10960861 DOI: 10.1038/s41467-024-46895-4] [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: 12/26/2023] [Accepted: 03/14/2024] [Indexed: 03/25/2024] Open
Abstract
While phonon anharmonicity affects lattice thermal conductivity intrinsically and is difficult to be modified, controllable lattice defects routinely function only by scattering phonons extrinsically. Here, through a comprehensive study of crystal structure and lattice dynamics of Zintl-type Sr(Cu,Ag,Zn)Sb thermoelectric compounds using neutron scattering techniques and theoretical simulations, we show that the role of vacancies in suppressing lattice thermal conductivity could extend beyond defect scattering. The vacancies in Sr2ZnSb2 significantly enhance lattice anharmonicity, causing a giant softening and broadening of the entire phonon spectrum and, together with defect scattering, leading to a ~ 86% decrease in the maximum lattice thermal conductivity compared to SrCuSb. We show that this huge lattice change arises from charge density reconstruction, which undermines both interlayer and intralayer atomic bonding strength in the hierarchical structure. These microscopic insights demonstrate a promise of artificially tailoring phonon anharmonicity through lattice defect engineering to manipulate lattice thermal conductivity in the design of energy conversion materials.
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Affiliation(s)
- Jinfeng Zhu
- Key Laboratory of Artificial Structures and Quantum Control, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
| | - Qingyong Ren
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China.
- Spallation Neutron Source Science Center, Dongguan, China.
- Guangdong Provincial Key Laboratory of Extreme Conditions, Dongguan, China.
| | - Chen Chen
- School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen, China
- School of Physical Sciences, Great Bay University, Dongguan, Guangdong, China
| | - Chen Wang
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong SAR, China
| | - Mingfang Shu
- Key Laboratory of Artificial Structures and Quantum Control, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
| | - Miao He
- Anhui Province Key Laboratory of Low-Energy Quantum Materials and Devices, CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, High Magnetic Field Laboratory of Chinese Academy of Sciences (CHMFL), HFIPS, CAS, Hefei, China
- Science Island Branch of Graduate School, University of Science and Technology of China, Hefei, China
| | - Cuiping Zhang
- Key Laboratory of Artificial Structures and Quantum Control, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
| | - Manh Duc Le
- ISIS Neutron and Muon Source, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, England, UK
| | - Shuki Torri
- Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tokai, Ibaraki, Japan
| | - Chin-Wei Wang
- Neutron Group, National Synchrotron Radiation Research Center, Hsinchu, Taiwan
| | - Jianli Wang
- College of Physics, Jilin University, Changchun, China
- Institute for Superconducting and Electronic Materials, Faculty of Engineering and Information Sciences, University of Wollongong, Innovation Campus, North Wollongong, Australia
| | - Zhenxiang Cheng
- Institute for Superconducting and Electronic Materials, Faculty of Engineering and Information Sciences, University of Wollongong, Innovation Campus, North Wollongong, Australia
| | - Lisi Li
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
- Spallation Neutron Source Science Center, Dongguan, China
- Guangdong Provincial Key Laboratory of Extreme Conditions, Dongguan, China
| | - Guohua Wang
- Key Laboratory of Artificial Structures and Quantum Control, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China
| | - Yuxuan Jiang
- School of Physics and Optoelectronics Engineering, Anhui University, Hefei, Anhui, China
| | - Mingzai Wu
- School of Physics and Optoelectronics Engineering, Anhui University, Hefei, Anhui, China
| | - Zhe Qu
- Anhui Province Key Laboratory of Low-Energy Quantum Materials and Devices, CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, High Magnetic Field Laboratory of Chinese Academy of Sciences (CHMFL), HFIPS, CAS, Hefei, China
- Science Island Branch of Graduate School, University of Science and Technology of China, Hefei, China
| | - Xin Tong
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China.
- Spallation Neutron Source Science Center, Dongguan, China.
- Guangdong Provincial Key Laboratory of Extreme Conditions, Dongguan, China.
| | - Yue Chen
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong SAR, China.
| | - Qian Zhang
- School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen, China.
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin, China.
| | - Jie Ma
- Key Laboratory of Artificial Structures and Quantum Control, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, China.
- Collaborative Innovation Center of Advanced Microstructures, Nanjing, 210093, Jiangsu, China.
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Li Y, Yang T, She Y, Xu B, Du Y, Zhang M. Halide Double Perovskites Cs 2PdBr 6-xI x with Tunable Bandgaps for Solar Cells. Inorg Chem 2023; 62:19248-19255. [PMID: 37955232 DOI: 10.1021/acs.inorgchem.3c02516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
Inorganic lead-free vacancy-ordered double perovskites with the chemical formula A2BX6 are promising candidates to overcome Pb-based organic-inorganic perovskite's toxicity and instability issues. We designed the mixed-halide double perovskites Cs2PdBr6-xIx by halogen anions substitution. The structure, stability, and electronic and photoelectric properties were explored using density functional theory (DFT). The negative value of the formation energy indicated that the Cs2PdBr6-xIx perovskites are thermodynamically stable. These perovskites exhibit tunable bandgap values in the range of 0.77-1.73 eV, which are direct or quasi-direct bandgaps except for Cs2PdBr3I3. Their absorption spectrum shows that the absorption range of visible light expands significantly. The theoretical spectral limit maximum efficiency (SLME) of Cs2PdBr5I with 1.3 eV and Cs2PdBr4I2 with 1.04 eV reached 32 and 30.4%, respectively, which are becoming comparable to or slightly surpassing CH3NH3PbI3, indicating they could be candidates for single-junction solar cells. In addition, the Cs2PdBr3I3 and the Cs2PdBr4I2, with the bandgap of 1.12 and 1.04 eV, respectively, could be the bottom cell to form the homogeneous tandem solar cells with the Cs2PdBr6, which could be the top cell with the bandgap of 1.73 eV.
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Affiliation(s)
- Yuhuan Li
- Department of Physics, School of Sciences, Beihua University, Jilin 132013, China
| | - Tongxiao Yang
- Department of Physics, School of Sciences, Beihua University, Jilin 132013, China
| | - Yaqi She
- Department of Physics, School of Sciences, Beihua University, Jilin 132013, China
| | - Beizheng Xu
- School of Materials Science and Engineering, Beihua University, Jilin 132013, China
| | - Yonghui Du
- Department of Physics, School of Sciences, Beihua University, Jilin 132013, China
- School of Materials Science and Engineering, Beihua University, Jilin 132013, China
| | - Miao Zhang
- Department of Physics, School of Sciences, Beihua University, Jilin 132013, China
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Qi F, Pu Y, Wu D, Tang X, Huang Q. Recent Advances and Future Perspectives of Lead-Free Halide Perovskites for Photocatalytic CO 2 Reduction. CHEM REC 2023; 23:e202300078. [PMID: 37229755 DOI: 10.1002/tcr.202300078] [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: 02/28/2023] [Revised: 05/04/2023] [Indexed: 05/27/2023]
Abstract
It is still challenging to design and develop the state-of-the-art photocatalysts toward CO2 photoreduction. Enormous researchers have focused on the halide perovskites in the photocatalytic field for CO2 photoreduction, due to their excellent optical and physical properties. The toxicity of lead-based halide perovskites prevents their large-scale applications in photocatalytic fields. In consequence, lead-free halide perovskites (LFHPs) without the toxicity become the promising alternatives in the photocatalytic application for CO2 photoreduction. In recent years, the rapid advances of LFHPs have offer new chances for the photocatalytic CO2 reduction of LFHPs. In this review, we summarize not only the structures and properties of A2 BX6 , A2 B(I)B(III)X6 , and A3 B2 X9 -type LFHPs but also their recent progresses on the photocatalytic CO2 reduction. Furthermore, we also point out the opportunities and perspectives to research LFHPs photocatalysts for CO2 photoreduction in the future.
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Affiliation(s)
- Fei Qi
- School of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing, 400065, China
| | - Yayun Pu
- School of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing, 400065, China
| | - Daofu Wu
- Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education), College of Optoelectronic Engineering, Chongqing University, Chongqing, 400044, China
| | - Xiaosheng Tang
- School of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing, 400065, China
- Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education), College of Optoelectronic Engineering, Chongqing University, Chongqing, 400044, China
| | - Qiang Huang
- School of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing, 400065, China
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Al-Fartoos MMR, Roy A, Mallick TK, Tahir AA. Advancing Thermoelectric Materials: A Comprehensive Review Exploring the Significance of One-Dimensional Nano Structuring. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2011. [PMID: 37446526 DOI: 10.3390/nano13132011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 06/29/2023] [Accepted: 07/02/2023] [Indexed: 07/15/2023]
Abstract
Amidst the global challenges posed by pollution, escalating energy expenses, and the imminent threat of global warming, the pursuit of sustainable energy solutions has become increasingly imperative. Thermoelectricity, a promising form of green energy, can harness waste heat and directly convert it into electricity. This technology has captivated attention for centuries due to its environmentally friendly characteristics, mechanical stability, versatility in size and substrate, and absence of moving components. Its applications span diverse domains, encompassing heat recovery, cooling, sensing, and operating at low and high temperatures. However, developing thermoelectric materials with high-performance efficiency faces obstacles such as high cost, toxicity, and reliance on rare-earth elements. To address these challenges, this comprehensive review encompasses pivotal aspects of thermoelectricity, including its historical context, fundamental operating principles, cutting-edge materials, and innovative strategies. In particular, the potential of one-dimensional nanostructuring is explored as a promising avenue for advancing thermoelectric technology. The concept of one-dimensional nanostructuring is extensively examined, encompassing various configurations and their impact on the thermoelectric properties of materials. The profound influence of one-dimensional nanostructuring on thermoelectric parameters is also thoroughly discussed. The review also provides a comprehensive overview of large-scale synthesis methods for one-dimensional thermoelectric materials, delving into the measurement of thermoelectric properties specific to such materials. Finally, the review concludes by outlining prospects and identifying potential directions for further advancements in the field.
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Affiliation(s)
- Mustafa Majid Rashak Al-Fartoos
- Solar Energy Research Group, Environment and Sustainability Institute, University of Exeter, Penryn Campus, Cornwall TR10 9FE, UK
| | - Anurag Roy
- Solar Energy Research Group, Environment and Sustainability Institute, University of Exeter, Penryn Campus, Cornwall TR10 9FE, UK
| | - Tapas K Mallick
- Solar Energy Research Group, Environment and Sustainability Institute, University of Exeter, Penryn Campus, Cornwall TR10 9FE, UK
| | - Asif Ali Tahir
- Solar Energy Research Group, Environment and Sustainability Institute, University of Exeter, Penryn Campus, Cornwall TR10 9FE, UK
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