101
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Yin T, Liu B, Yan J, Fang Y, Chen M, Chong WK, Jiang S, Kuo JL, Fang J, Liang P, Wei S, Loh KP, Sum TC, White TJ, Shen ZX. Pressure-Engineered Structural and Optical Properties of Two-Dimensional (C 4H 9NH 3) 2PbI 4 Perovskite Exfoliated nm-Thin Flakes. J Am Chem Soc 2018; 141:1235-1241. [PMID: 30561996 DOI: 10.1021/jacs.8b07765] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Resolving the structure-property relationships of two-dimensional (2D) organic-inorganic hybrid perovskites is essential for the development of photovoltaic and photoelectronic devices. Here, pressure (0-10 GPa) was applied to 2D hybrid perovskite flakes mechanically exfoliated from butylammonium lead halide single crystals, (C4H9NH3)2PbI4, from which we observed a series of changes of the strong excitonic emissions in the photoluminescence spectra. By correlating with in situ high-pressure X-ray diffraction results, we examine successfully the relationship between structural modifications in the inorganic PbI42- layer and their excitonic properties. During the transition between Pbca (1b) phase and Pbca (1a) phase at around 0.1 GPa, the decrease in ⟨Pb-I-Pb⟩ bond angle and increase in Pb-I bond length lead to an abrupt blue shift of the excitonic bandgap. The presence of the P21/a phase above 1.4 GPa increases the ⟨Pb-I-Pb⟩ bond angle and decreases the Pb-I bond length, leading to a deep red shift of the excitonic bandgap. The total band gap narrowing of ∼350 meV to 2.03 eV at 5.3 GPa before amorphization, facilitates (C4H9NH3)2PbI4 as a much better solar absorber. Moreover, phase transitions inevitably modify the carrier lifetime of (C4H9NH3)2PbI4, where an initial 150 ps at ambient phase is prolongated to 190 ps in the Pbca (1a) phase along with enhanced photoluminescence (PL), originating from pressure-induced strong radiative recombination of trapped excitons.The onset of P21/a phase shortens significantly the carrier lifetime to 53 ps along with a weak PL emission due to pressure-induced severe lattice distortion and amorphization. High-pressure study on (C4H9NH3)2PbI4 nm-thin flakes may provide insights into the mechanisms for synthetically designing novel 2D hybrid perovskite based photoelectronic devices and solar cells.
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Affiliation(s)
- Tingting Yin
- Centre for Disruptive Photonic Technologies, School of Physical and Mathematical Sciences , Nanyang Technological University 637371 , Singapore
| | - Bo Liu
- Department of Chemistry and Centre for Advanced 2D Materials (CA2DM) , 3 Science Drive 3 117543 , Singapore.,Division of Physics and Applied Physics , School of Physical and Mathematical Sciences (SPMS) , NTU, 21 Nanyang Link 637371 , Singapore
| | - Jiaxu Yan
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University (Nanjing Tech) , 30 South Puzhu Road , Nanjing 211816 , P. R. China.,Division of Physics and Applied Physics , School of Physical and Mathematical Sciences (SPMS) , NTU, 21 Nanyang Link 637371 , Singapore
| | - Yanan Fang
- ERI@N , Research Techno Plaza , X-Frontier Block, Level 5, 50 Nanyang Drive 637553 , Singapore
| | - Minghua Chen
- Key Laboratory of Engineering Dielectric and Applications (Ministry of Education) , Harbin University of Science and Technology , Harbin 150080 , P. R. China
| | - Wee Kiang Chong
- Division of Physics and Applied Physics , School of Physical and Mathematical Sciences (SPMS) , NTU, 21 Nanyang Link 637371 , Singapore.,Energy Research Institute @ NTU, ERI@N, Interdisciplinary Graduate School , Nanyang Technological University 639798 , Singapore
| | - Shaojie Jiang
- Materials Science and Engineering Program , State University of New York at Binghamton Binghamton , New York 13902 , United States
| | - Jer-Lai Kuo
- Institute of Atomic and Molecular Sciences , Academia Sinica , Taipei 10617 , Taiwan
| | - Jiye Fang
- Materials Science and Engineering Program , State University of New York at Binghamton Binghamton , New York 13902 , United States
| | - Pei Liang
- College of Optical and Electronic Technology , China Jiliang University , 310018 Hangzhou , China
| | - Shuhuai Wei
- Beijing Computational Science Research Center , 100094 Beijing , China
| | - Kian Ping Loh
- Department of Chemistry and Centre for Advanced 2D Materials (CA2DM) , 3 Science Drive 3 117543 , Singapore
| | - Tze Chien Sum
- Division of Physics and Applied Physics , School of Physical and Mathematical Sciences (SPMS) , NTU, 21 Nanyang Link 637371 , Singapore
| | - Timothy J White
- ERI@N , Research Techno Plaza , X-Frontier Block, Level 5, 50 Nanyang Drive 637553 , Singapore
| | - Ze Xiang Shen
- Centre for Disruptive Photonic Technologies, School of Physical and Mathematical Sciences , Nanyang Technological University 637371 , Singapore.,Division of Physics and Applied Physics , School of Physical and Mathematical Sciences (SPMS) , NTU, 21 Nanyang Link 637371 , Singapore
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102
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Wen T, Wang Y, Li N, Zhang Q, Zhao Y, Yang W, Zhao Y, Mao HK. Pressure-Driven Reversible Switching between n- and p-Type Conduction in Chalcopyrite CuFeS 2. J Am Chem Soc 2018; 141:505-510. [PMID: 30484644 DOI: 10.1021/jacs.8b11269] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Temperature-dependent switching between p- and n-type conduction is a newly observed phenomenon in very few Ag-based semiconductors, which may promote fascinating applications in modern electronics. Pressure, as an efficient external stimulus that has driven collective phenomena such as spin-crossover and Mott transition, is also expected to initialize a conduction-type switching in transition metal-based semiconductors. Herein, we report the observation of a pressure-driven dramatic switching between p- and n-type conduction in chalcopyrite CuFeS2 associated with a structural phase transition. Under compression around 8 GPa, CuFeS2 undergoes a phase transition with symmetry breakdown from space group I-42 d to space group I-4 accompanying with a remarkable volume shrinkage of the FeS4 tetrahedra. A high-to-low spin-crossover of Fe2+ ( S = 2 to S = 0) is manifested along with this phase transition. Instead of pressure-driven metallization, a surprising semiconductor-to-semiconductor transition is observed associated with the structural and electronic transformations. Significantly, both photocurrent and Hall coefficient measurements confirm that CuFeS2 undergoes a reversible pressure-driven p- n conduction type switching accompanying with the structural phase transition. The absence of cationic charge transfer between copper and iron during the phase transition is confirmed by both X-ray absorption near-edge spectra (Cu/Fe, K-edge) and total-fluorescence-yield X-ray absorption spectra (Fe, K-edge) results, and the valence distribution maintains Cu2+Fe2+S2 in the high-pressure phase. The observation of an abrupt pressure-driven p- n conduction type switching in a transition metal-based semiconductor paves the way to novel pressure-responsive switching devices.
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Affiliation(s)
- Ting Wen
- Center for High Pressure Science and Technology Advanced Research (HPSTAR) , Beijing 100094 , China
| | - Yonggang Wang
- Center for High Pressure Science and Technology Advanced Research (HPSTAR) , Beijing 100094 , China
| | - Nana Li
- Center for High Pressure Science and Technology Advanced Research (HPSTAR) , Beijing 100094 , China
| | - Qian Zhang
- Center for High Pressure Science and Technology Advanced Research (HPSTAR) , Beijing 100094 , China
| | - Yongsheng Zhao
- Center for High Pressure Science and Technology Advanced Research (HPSTAR) , Beijing 100094 , China
| | - Wenge Yang
- Center for High Pressure Science and Technology Advanced Research (HPSTAR) , Beijing 100094 , China
| | - Yusheng Zhao
- Department of Physics and Academy for Advanced Interdisciplinary Studies , Southern University of Science and Technology , Shenzhen 518055 , China
| | - Ho-Kwang Mao
- Center for High Pressure Science and Technology Advanced Research (HPSTAR) , Beijing 100094 , China
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103
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Mao L, Stoumpos CC, Kanatzidis MG. Two-Dimensional Hybrid Halide Perovskites: Principles and Promises. J Am Chem Soc 2018; 141:1171-1190. [PMID: 30399319 DOI: 10.1021/jacs.8b10851] [Citation(s) in RCA: 492] [Impact Index Per Article: 82.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Hybrid halide perovskites have become the "next big thing" in emerging semiconductor materials, as the past decade witnessed their successful application in high-performance photovoltaics. This resurgence has encompassed enormous and widespread development of the three-dimensional (3D) perovskites, spearheaded by CH3NH3PbI3. The next generation of halide perovskites, however, is characterized by reduced dimensionality perovskites, emphasizing the two-dimensional (2D) perovskite derivatives which expand the field into a more diverse subgroup of semiconducting hybrids that possesses even higher tunability and excellent photophysical properties. In this Perspective, we begin with a historical flashback to early reports before the "perovskite fever", and we follow this original work to its fruition in the present day, where 2D halide perovskites are in the spotlight of current research, offering characteristics desirable in high-performance optoelectronics. We approach the evolution of 2D halide perovskites from a structural perspective, providing a way to classify the diverse structure types of the materials, which largely dictate the unusual physical properties observed. We sort the 2D hybrid halide perovskites on the basis of two key components: the inorganic layers and their modification, and the organic cation diversity. As these two heterogeneous components blend, either by synthetic manipulation (shuffling the organic cations or inorganic elements) or by application of external stimuli (temperature and pressure), the modular perovskite structure evolves to construct crystallographically defined quantum wells (QWs). The complex electronic structure that arises is sensitive to the structural features that could be in turn used as a knob to control the dielectric and optical properties the QWs. We conclude this Perspective with the most notable achievements in optoelectronic devices that have been demonstrated to date, with an eye toward future material discovery and potential technological developments.
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Affiliation(s)
- Lingling Mao
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States
| | - Constantinos C Stoumpos
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States
| | - Mercouri G Kanatzidis
- Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States
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104
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Ji M, Wang H, Gong Y, Cheng H, Zheng L, Li X, Huang L, Liu J, Nie Z, Zeng Q, Xu M, Liu J, Wang X, Qian P, Zhu C, Wang J, Li X, Zhang J. High Pressure Induced in Situ Solid-State Phase Transformation of Nonepitaxial Grown Metal@Semiconductor Nanocrystals. J Phys Chem Lett 2018; 9:6544-6549. [PMID: 30384608 DOI: 10.1021/acs.jpclett.8b03057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Considering the large lattice mismatch induced interface strain between nonepitaxial grown monocrystalline semiconductor shell and metal core, we studied the solid-state phase transformation of such nonepitaxial grown Au@CdS core/shell NCs under high pressure in this paper. Consistent with HRTEM characterizations, the high resolution Raman spectra and synchrotron angle-dispersive X-ray diffraction (ADXRD) spectra evolution were utilized to investigate the hydrostatic pressure (0-24 GPa) induced gradual phase transformation. Due to the strong lattice interactions between Au core and CdS shell, the different behavior and improved stability under high pressure appeared compared to single quantum dots (QDs).
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Affiliation(s)
- Muwei Ji
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering , Beijing Institute of Technology , Beijing , 100081 , P. R. China
- School of Chemistry and Environmental Engineering , Shenzhen University , Shenzhen , 518055 , P. R. China
- Graduate School at Shenzhen , Tsinghua University , Shenzhen , 518055 , P. R. China
| | - Hongzhi Wang
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering , Beijing Institute of Technology , Beijing , 100081 , P. R. China
| | - Yu Gong
- Institute of High Energy Physics , The Chinese Academy of Sciences , Beijing , 100049 , P. R. China
| | - Haixia Cheng
- Department of Physics , University of Science and Technology Beijing , Beijing 100083 , P. R. China
| | - Lirong Zheng
- Institute of High Energy Physics , The Chinese Academy of Sciences , Beijing , 100049 , P. R. China
| | - Xinyuan Li
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering , Beijing Institute of Technology , Beijing , 100081 , P. R. China
| | - Liu Huang
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering , Beijing Institute of Technology , Beijing , 100081 , P. R. China
| | - Jia Liu
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering , Beijing Institute of Technology , Beijing , 100081 , P. R. China
| | - Zhihua Nie
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering , Beijing Institute of Technology , Beijing , 100081 , P. R. China
| | - Qiaoshi Zeng
- HPSynC, Geophysical Laboratory , Carnegie Institution of Washington , Argonne , Illinois 60439 , United States
- Center for High Pressure Science and Technology Advanced Research (HPSTAR) , Shanghai 201203 , P. R. China
| | - Meng Xu
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering , Beijing Institute of Technology , Beijing , 100081 , P. R. China
| | - Jiajia Liu
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering , Beijing Institute of Technology , Beijing , 100081 , P. R. China
| | - Xiaoxu Wang
- Department of Cloud Platform , Beijing Computing Center , Beijing 100094 , P. R. China
| | - Ping Qian
- Department of Physics , University of Science and Technology Beijing , Beijing 100083 , P. R. China
| | - Caizhen Zhu
- School of Chemistry and Environmental Engineering , Shenzhen University , Shenzhen , 518055 , P. R. China
| | - Jin Wang
- Graduate School at Shenzhen , Tsinghua University , Shenzhen , 518055 , P. R. China
| | - Xiaodong Li
- Institute of High Energy Physics , The Chinese Academy of Sciences , Beijing , 100049 , P. R. China
| | - Jiatao Zhang
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering , Beijing Institute of Technology , Beijing , 100081 , P. R. China
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105
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Ma Z, Liu Z, Lu S, Wang L, Feng X, Yang D, Wang K, Xiao G, Zhang L, Redfern SAT, Zou B. Pressure-induced emission of cesium lead halide perovskite nanocrystals. Nat Commun 2018; 9:4506. [PMID: 30374042 PMCID: PMC6206024 DOI: 10.1038/s41467-018-06840-8] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 09/21/2018] [Indexed: 12/24/2022] Open
Abstract
Metal halide perovskites (MHPs) are of great interest for optoelectronics because of their high quantum efficiency in solar cells and light-emitting devices. However, exploring an effective strategy to further improve their optical activities remains a considerable challenge. Here, we report that nanocrystals (NCs) of the initially nonfluorescent zero-dimensional (0D) cesium lead halide perovskite Cs4PbBr6 exhibit a distinct emission under a high pressure of 3.01 GPa. Subsequently, the emission intensity of Cs4PbBr6 NCs experiences a significant increase upon further compression. Joint experimental and theoretical analyses indicate that such pressure-induced emission (PIE) may be ascribed to the enhanced optical activity and the increased binding energy of self-trapped excitons upon compression. This phenomenon is a result of the large distortion of [PbBr6]4- octahedral motifs resulting from a structural phase transition. Our findings demonstrate that high pressure can be a robust tool to boost the photoluminescence efficiency and provide insights into the relationship between the structure and optical properties of 0D MHPs under extreme conditions.
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Affiliation(s)
- Zhiwei Ma
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, China
| | - Zhun Liu
- Key Laboratory of Automobile Materials of MOE, and School of Materials Science, Jilin University, Changchun, 130012, China
| | - Siyu Lu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - Lingrui Wang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, China
| | - Xiaolei Feng
- Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ, UK.,Center for High Pressure Science and Technology Advanced Research, Shanghai, 201203, China
| | - Dongwen Yang
- Key Laboratory of Automobile Materials of MOE, and School of Materials Science, Jilin University, Changchun, 130012, China
| | - Kai Wang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, China
| | - Guanjun Xiao
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, China.
| | - Lijun Zhang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, China. .,Key Laboratory of Automobile Materials of MOE, and School of Materials Science, Jilin University, Changchun, 130012, China.
| | - Simon A T Redfern
- Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ, UK.,Center for High Pressure Science and Technology Advanced Research, Shanghai, 201203, China
| | - Bo Zou
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, China.
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106
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Zhang L, Liu C, Wang L, Liu C, Wang K, Zou B. Pressure-Induced Emission Enhancement, Band-Gap Narrowing, and Metallization of Halide Perovskite Cs3
Bi2
I9. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201804310] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Long Zhang
- State Key Laboratory of Superhard Materials, College of Physics; Jilin University; Changchun 130012 China
| | - Chunming Liu
- Institute of Atomic and Molecular Physics; Jilin University; Changchun 130012 China
| | - Lingrui Wang
- State Key Laboratory of Superhard Materials, College of Physics; Jilin University; Changchun 130012 China
| | - Cailong Liu
- Institute of Atomic and Molecular Physics and State Key Laboratory of Superhard Materials; Jilin University; Changchun 130012 China
| | - Kai Wang
- State Key Laboratory of Superhard Materials, College of Physics; Jilin University; Changchun 130012 China
| | - Bo Zou
- State Key Laboratory of Superhard Materials, College of Physics; Jilin University; Changchun 130012 China
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107
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Zhang L, Liu C, Wang L, Liu C, Wang K, Zou B. Pressure-Induced Emission Enhancement, Band-Gap Narrowing, and Metallization of Halide Perovskite Cs 3 Bi 2 I 9. Angew Chem Int Ed Engl 2018; 57:11213-11217. [PMID: 30010235 DOI: 10.1002/anie.201804310] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Indexed: 11/08/2022]
Abstract
Low-toxicity, air-stable bismuth-based perovskite materials are attractive substitutes for lead halide perovskites in photovoltaic and optoelectronic devices. The structural, optical, and electrical property changes of zero-dimensional perovskite Cs3 Bi2 I9 resulting from lattice compression is presented. An emission enhancement under mild pressure is attributed to the increase in exciton binding energy. Unprecedented band gap narrowing originated from Bi-I bond contraction, and the decrease in bridging Bi-I-Bi angle enhances metal halide orbital overlap, thereby breaking through the Shockley-Queisser limit under relatively low pressure. Pressure-induced structural evolutions correlate well with changes in optical properties, and the changes are reversible upon decompression. Considerable resistance reduction implies a semiconductor-to-conductor transition at ca. 28 GPa, and the final confirmed metallic character by electrical experiments indicates a wholly new electronic property.
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Affiliation(s)
- Long Zhang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, China
| | - Chunming Liu
- Institute of Atomic and Molecular Physics, Jilin University, Changchun, 130012, China
| | - Lingrui Wang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, China
| | - Cailong Liu
- Institute of Atomic and Molecular Physics and State Key Laboratory of Superhard Materials, Jilin University, Changchun, 130012, China
| | - Kai Wang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, China
| | - Bo Zou
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun, 130012, China
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108
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Hu Y, Zhang H, Chong WK, Li Y, Ke Y, Ganguly R, Morris SA, You L, Yu T, Sum TC, Long Y, Fan HJ. Molecular Engineering toward Coexistence of Dielectric and Optical Switch Behavior in Hybrid Perovskite Phase Transition Material. J Phys Chem A 2018; 122:6416-6423. [DOI: 10.1021/acs.jpca.8b05693] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuzhong Hu
- School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Hongbo Zhang
- School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Wee Kiang Chong
- School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Yongxin Li
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Yujie Ke
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798
| | - Rakesh Ganguly
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Samuel Alexander Morris
- Facility for Analysis, Characterisation, Testing and Simulation (FACT), Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
| | - Lu You
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798
| | - Ting Yu
- School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Tze Chien Sum
- School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Yi Long
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798
| | - Hong Jin Fan
- School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
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109
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Malgras V, Henzie J, Takei T, Yamauchi Y. Stable Blue Luminescent CsPbBr3
Perovskite Nanocrystals Confined in Mesoporous Thin Films. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802335] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Victor Malgras
- International Center for Young Scientists (ICYS) & International Centre for Materials Nanoarchitectonics (MANA); National Institute for Materials Science (NIMS); 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
| | - Joel Henzie
- International Center for Young Scientists (ICYS) & International Centre for Materials Nanoarchitectonics (MANA); National Institute for Materials Science (NIMS); 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
| | - Toshiaki Takei
- International Center for Young Scientists (ICYS) & International Centre for Materials Nanoarchitectonics (MANA); National Institute for Materials Science (NIMS); 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
| | - Yusuke Yamauchi
- College of Chemistry and Molecular Engineering; Qingdao University of Science and Technology; Qingdao 266042 China
- Department of Plant and Environmental New Resources; Kyung Hee University; 1732 Deogyeong-daero, Giheung-gu Yongin-si Gyeonggi-do 446-701 South Korea
- School of Chemical Engineering and Australian Institute for, Bioengineering and Nanotechnology; The University of Queensland; Brisbane Australia
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110
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Malgras V, Henzie J, Takei T, Yamauchi Y. Stable Blue Luminescent CsPbBr3
Perovskite Nanocrystals Confined in Mesoporous Thin Films. Angew Chem Int Ed Engl 2018; 57:8881-8885. [DOI: 10.1002/anie.201802335] [Citation(s) in RCA: 117] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 04/15/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Victor Malgras
- International Center for Young Scientists (ICYS) & International Centre for Materials Nanoarchitectonics (MANA); National Institute for Materials Science (NIMS); 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
| | - Joel Henzie
- International Center for Young Scientists (ICYS) & International Centre for Materials Nanoarchitectonics (MANA); National Institute for Materials Science (NIMS); 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
| | - Toshiaki Takei
- International Center for Young Scientists (ICYS) & International Centre for Materials Nanoarchitectonics (MANA); National Institute for Materials Science (NIMS); 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
| | - Yusuke Yamauchi
- College of Chemistry and Molecular Engineering; Qingdao University of Science and Technology; Qingdao 266042 China
- Department of Plant and Environmental New Resources; Kyung Hee University; 1732 Deogyeong-daero, Giheung-gu Yongin-si Gyeonggi-do 446-701 South Korea
- School of Chemical Engineering and Australian Institute for, Bioengineering and Nanotechnology; The University of Queensland; Brisbane Australia
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111
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Zhang L, Geng W, Tong CJ, Chen X, Cao T, Chen M. Strain induced electronic structure variation in methyl-ammonium lead iodide perovskite. Sci Rep 2018; 8:7760. [PMID: 29773812 PMCID: PMC5958122 DOI: 10.1038/s41598-018-25772-3] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 04/27/2018] [Indexed: 12/05/2022] Open
Abstract
Methyl-ammonium lead iodide perovskite (CH3NH3PbI3) has drawn great attention due to its excellent photovoltaic properties. Because of its loosely compacted structure, the structural, electronic and optical properties of CH3NH3PbI3 are sensitive to external modulations. Strain effects on CH3NH3PbI3 are fully investigated by the first principles calculations. The results indicate that the inorganic framework deforms under compression or stretch and the embedded organic CH3NH3+ molecules rotate correspondingly. A band gap oscillation and a new structural phase in response to the external strain were observed for the first time. These phenomena are explained with the nonlinear structural deformation and phase transition under the external strains. The semi-quantitative relationship between the band gap variation and geometry change under the external strain is obtained. We found that the shift of valence band maximum under the external strain is mostly determined by the most stretched or compressed Pb-I bond of CH3NH3PbI3, and the shift of the conduction band minimum under the external strain is likely to be determined by the largest Pb-I-Pb bond angle in the system. These results are important for understanding of strain effects on semiconductors and guiding the experiments to improve the performance of the perovskite solar cells.
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Affiliation(s)
- Le Zhang
- Beijing Computational Science Research Center, Beijing, 100193, China
| | - Wei Geng
- School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Chuan-Jia Tong
- Beijing Computational Science Research Center, Beijing, 100193, China
| | - Xueguang Chen
- School of Material Science and Engineering, Hebei University of Technology, Tianjin, 300130, P. R. China.
| | - Tengfei Cao
- Beijing Computational Science Research Center, Beijing, 100193, China.
| | - Mingyang Chen
- Beijing Computational Science Research Center, Beijing, 100193, China.
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112
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Abstract
An efficient reagent system, Ph3P/XCH2CH2X (X = Cl, Br, or I), was very effective for the deoxygenative halogenation (including fluorination) of alcohols (including tertiary alcohols) and aldehydes. The easily available 1,2-dihaloethanes were used as key reagents and halogen sources. The use of (EtO)3P instead of Ph3P could also realize deoxy-halogenation, allowing for a convenient purification process, as the byproduct (EtO)3P═O could be removed by aqueous washing. The mild reaction conditions, wide substrate scope, and wide availability of 1,2-dihaloethanes make this protocol attractive for the synthesis of halogenated compounds.
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Affiliation(s)
- Jia Chen
- Key Laboratory of Organofluorine Chemistry , Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
| | - Jin-Hong Lin
- Key Laboratory of Organofluorine Chemistry , Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
| | - Ji-Chang Xiao
- Key Laboratory of Organofluorine Chemistry , Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
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113
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Jiang S, Fang Y, Li R, White TJ, Wang Z, Baikie T, Fang J. Pressure-Induced Phase Transitions and Bandgap-Tuning Effect of Methylammonium Lead Iodide Perovskite. ACTA ACUST UNITED AC 2018. [DOI: 10.1557/adv.2018.154] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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114
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Yin T, Fang Y, Chong WK, Ming KT, Jiang S, Li X, Kuo JL, Fang J, Sum TC, White TJ, Yan J, Shen ZX. High-Pressure-Induced Comminution and Recrystallization of CH 3 NH 3 PbBr 3 Nanocrystals as Large Thin Nanoplates. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:1705017. [PMID: 29178658 DOI: 10.1002/adma.201705017] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2017] [Revised: 09/25/2017] [Indexed: 06/07/2023]
Abstract
High pressure (HP) can drive the direct sintering of nanoparticle assemblies for Ag/Au, CdSe/PbS nanocrystals (NCs). Instead of direct sintering for the conventional nanocrystals, this study experimentally observes for the first time high-pressure-induced comminution and recrystallization of organic-inorganic hybrid perovskite nanocrystals into highly luminescent nanoplates with a shorter carrier lifetime. Such novel pressure response is attributed to the unique structural nature of hybrid perovskites under high pressure: during the drastic cubic-orthorhombic structural transformation at ≈2 GPa, (301) the crystal plane fully occupied by organic molecules possesses a higher surface energy, triggering the comminution of nanocrystals into nanoslices along such crystal plane. Beyond bulk perovskites, in which pressure-induced modifications on crystal structures and functional properties will disappear after pressure release, the pressure-formed variants, i.e., large (≈100 nm) and thin (<10 nm) perovskite nanoplates, are retained and these exhibit simultaneous photoluminescence emission enhancing (a 15-fold enhancement in the photoluminescence) and carrier lifetime shortening (from ≈18.3 ± 0.8 to ≈7.6 ± 0.5 ns) after releasing of pressure from 11 GPa. This pressure-induced comminution of hybrid perovskite NCs and a subsequent amorphization-recrystallization treatment offer the possibilities of engineering the advanced hybrid perovskites with specific properties.
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Affiliation(s)
- Tingting Yin
- Centre for Disruptive Photonic Technologies, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371
| | - Yanan Fang
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798
| | - Wee Kiang Chong
- Energy Research Institute @ NTU, ERI@N, Interdisciplinary Graduate School, Nanyang Technological University, Singapore, 639798
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences (SPMS), Nanyang Technological University, 21 Nanyang Link, Singapore, 637371
| | - Koh Teck Ming
- ERI@N, Research Techno Plaza, X-Frontier Block, Level 5, 50 Nanyang Drive, Singapore, 637553
| | - Shaojie Jiang
- Materials Science and Engineering Program State University of New York at Binghamton Binghamton, NY, 13902, USA
| | - Xianglin Li
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798
| | - Jer-Lai Kuo
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, 10617, Taiwan
| | - Jiye Fang
- Materials Science and Engineering Program State University of New York at Binghamton Binghamton, NY, 13902, USA
| | - Tze Chien Sum
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences (SPMS), Nanyang Technological University, 21 Nanyang Link, Singapore, 637371
| | - Timothy J White
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798
| | - Jiaxu Yan
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences (SPMS), Nanyang Technological University, 21 Nanyang Link, Singapore, 637371
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Ze Xiang Shen
- Centre for Disruptive Photonic Technologies, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences (SPMS), Nanyang Technological University, 21 Nanyang Link, Singapore, 637371
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115
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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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116
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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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117
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Wei TC, Wang HP, Li TY, Lin CH, Hsieh YH, Chu YH, He JH. Photostriction of CH 3 NH 3 PbBr 3 Perovskite Crystals. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1701789. [PMID: 28715093 DOI: 10.1002/adma.201701789] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 05/22/2017] [Indexed: 06/07/2023]
Abstract
Organic-inorganic hybrid perovskite materials exhibit a variety of physical properties. Pronounced coupling between phonon, organic cations, and the inorganic framework suggest that these materials exhibit strong light-matter interactions. The photoinduced strain of CH3 NH3 PbBr3 is investigated using high-resolution and contactless in situ Raman spectroscopy. Under illumination, the material exhibits large blue shifts in its Raman spectra that indicate significant structural deformations (i.e., photostriction). From these shifts, the photostrictive coefficient of CH3 NH3 PbBr3 is calculated as 2.08 × 10-8 m2 W-1 at room temperature under visible light illumination. The significant photostriction of CH3 NH3 PbBr3 is attributed to a combination of the photovoltaic effect and translational symmetry loss of the molecular configuration via strong translation-rotation coupling. Unlike CH3 NH3 PbI3 , it is noted that the photostriction of CH3 NH3 PbBr3 is extremely stable, demonstrating no signs of optical decay for at least 30 d. These results suggest the potential of CH3 NH3 PbBr3 for applications in next-generation optical micro-electromechanical devices.
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Affiliation(s)
- Tzu-Chiao Wei
- Computer, Electrical, and Mathematical Sciences and Engineering Division, King Abdullah University of Science & Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Hsin-Ping Wang
- Computer, Electrical, and Mathematical Sciences and Engineering Division, King Abdullah University of Science & Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Ting-You Li
- Computer, Electrical, and Mathematical Sciences and Engineering Division, King Abdullah University of Science & Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Chun-Ho Lin
- Computer, Electrical, and Mathematical Sciences and Engineering Division, King Abdullah University of Science & Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Ying-Hui Hsieh
- Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, 30010, Taiwan
| | - Ying-Hao Chu
- Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, 30010, Taiwan
| | - Jr-Hau He
- Computer, Electrical, and Mathematical Sciences and Engineering Division, King Abdullah University of Science & Technology, Thuwal, 23955-6900, Saudi Arabia
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118
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Lü X, Yang W, Jia Q, Xu H. Pressure-induced dramatic changes in organic-inorganic halide perovskites. Chem Sci 2017; 8:6764-6776. [PMID: 29147500 PMCID: PMC5643890 DOI: 10.1039/c7sc01845b] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 08/28/2017] [Indexed: 12/19/2022] Open
Abstract
Organic-inorganic halide perovskites have emerged as a promising family of functional materials for advanced photovoltaic and optoelectronic applications with high performances and low costs. Various chemical methods and processing approaches have been employed to modify the compositions, structures, morphologies, and electronic properties of hybrid perovskites. However, challenges still remain in terms of their stability, the use of environmentally unfriendly chemicals, and the lack of an insightful understanding into structure-property relationships. Alternatively, pressure, a fundamental thermodynamic parameter that can significantly alter the atomic and electronic structures of functional materials, has been widely utilized to further our understanding of structure-property relationships, and also to enable emergent or enhanced properties of given materials. In this perspective, we describe the recent progress of high-pressure research on hybrid perovskites, particularly regarding pressure-induced novel phenomena and pressure-enhanced properties. We discuss the effect of pressure on structures and properties, their relationships and the underlying mechanisms. Finally, we give an outlook on future research avenues in which high pressure and related alternative methods such as chemical tailoring and interfacial engineering may lead to novel hybrid perovskites uniquely suited for high-performance energy applications.
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Affiliation(s)
- Xujie Lü
- Los Alamos National Laboratory , Los Alamos , NM 87545 , USA . ;
| | - Wenge Yang
- Center for High Pressure Science and Technology Advanced Research , Shanghai 201203 , China
| | - Quanxi Jia
- Los Alamos National Laboratory , Los Alamos , NM 87545 , USA . ; .,Department of Materials Design and Innovation , University at Buffalo - The State University of New York , Buffalo , NY 14260 , USA .
| | - Hongwu Xu
- Los Alamos National Laboratory , Los Alamos , NM 87545 , USA . ;
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119
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Zhang L, Zeng Q, Wang K. Pressure-Induced Structural and Optical Properties of Inorganic Halide Perovskite CsPbBr 3. J Phys Chem Lett 2017; 8:3752-3758. [PMID: 28742359 DOI: 10.1021/acs.jpclett.7b01577] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Perovskite photovoltaic materials are gaining sustained attention because of their excellent photovoltaic properties and extensive practical applicability. In this Letter, we discuss the changes in the structure and optical properties of CsPbBr3 under high pressure. As the pressure increased, the band gap initially began to red shift before 1.0 GPa followed by a continuous blue shift until the crystal was completely amorphized. An isostructural phase transition at 1.2 GPa was determined by high-pressure synchrotron X-ray and Raman spectroscopy. The result could be attributed to bond length shrinkage and PbBr6 octahedral distortion under high pressure. The amorphization of the crystal was due to the severe distortion and tilt of the PbBr6 octahedron, leading to broken long-range order. Changes in optical properties are closely related to the evolution of the crystal structure. Our discussion shows that high-pressure study can be used as an effective means to tune the structure and properties of all-inorganic halide perovskites.
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Affiliation(s)
- Long Zhang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University , Changchun 130012, China
| | - Qingxin Zeng
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University , Changchun 130012, China
| | - Kai Wang
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University , Changchun 130012, China
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120
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Zhang R, Cai W, Bi T, Zarifi N, Terpstra T, Zhang C, Verdeny ZV, Zurek E, Deemyad S. Effects of Nonhydrostatic Stress on Structural and Optoelectronic Properties of Methylammonium Lead Bromide Perovskite. J Phys Chem Lett 2017; 8:3457-3465. [PMID: 28691486 DOI: 10.1021/acs.jpclett.7b01367] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We report synchrotron X-ray diffraction, photoconductivity, and photoluminescence investigations of methylammonium-lead-bromide (MAPbBr3) under various stress conditions, supported by density-functional-theory (DFT) calculations. The properties of MAPbBr3 show substantial dependence on the hydrostatic conditions. While nonhydrostatic compression of MAPbBr3 leads to amorphization above 2.4 GPa, under quasi-hydrostatic (Ar) and hydrostatic (He) pressure, the sample remains in crystalline phases. A sequence of phase transitions between two cubic phases and orthorhombic Pnma phase is observed when using Ar, or no pressure-transmitting-medium (PTM). In helium-PTM only transitions between the two cubic structures and a new isostructural phase transition with a large volume collapse to a third cubic-phase at 2.7 GPa was observed. The photoluminescence measurements indicate a pressure-induced band gap-narrowing in the cubic phase I, and a blue-shift in the orthorhombic structure. DFT calculations illustrate that the dynamics of the organic molecules and the inorganic lattice, coupled via the N-H···Br hydrogen-bonding interactions, affect the Pb-Br distance and the bandgap evolution under pressure.
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Affiliation(s)
- Rong Zhang
- Department of Physics and Astronomy, University of Utah , 115S 1400E, Salt Lake City, Utah 84112, United States
| | - Weizhao Cai
- Department of Physics and Astronomy, University of Utah , 115S 1400E, Salt Lake City, Utah 84112, United States
| | - Tiange Bi
- Department of Chemistry, State University of New York at Buffalo , Buffalo, New York 14260-3000, United States
| | - Niloofar Zarifi
- Department of Chemistry, State University of New York at Buffalo , Buffalo, New York 14260-3000, United States
| | - Tyson Terpstra
- Department of Chemistry, State University of New York at Buffalo , Buffalo, New York 14260-3000, United States
- Department of Chemistry, School of Arts and Science Education, D'Youville College , 591 Niagara Street, Buffalo, New York 14201, United States
| | - Chuang Zhang
- Department of Physics and Astronomy, University of Utah , 115S 1400E, Salt Lake City, Utah 84112, United States
| | - Z Valy Verdeny
- Department of Physics and Astronomy, University of Utah , 115S 1400E, Salt Lake City, Utah 84112, United States
| | - Eva Zurek
- Department of Chemistry, State University of New York at Buffalo , Buffalo, New York 14260-3000, United States
| | - Shanti Deemyad
- Department of Physics and Astronomy, University of Utah , 115S 1400E, Salt Lake City, Utah 84112, United States
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121
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Xiao G, Cao Y, Qi G, Wang L, Liu C, Ma Z, Yang X, Sui Y, Zheng W, Zou B. Pressure Effects on Structure and Optical Properties in Cesium Lead Bromide Perovskite Nanocrystals. J Am Chem Soc 2017; 139:10087-10094. [PMID: 28682634 DOI: 10.1021/jacs.7b05260] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Metal halide perovskites (MHPs) are gaining increasing interest because of their extraordinary performance in optoelectronic devices and solar cells. However, developing an effective strategy for achieving the band-gap engineering of MHPs that will satisfy the practical applications remains a great challenge. In this study, high pressure is introduced to tailor the optical and structural properties of MHP-based cesium lead bromide nanocrystals (CsPbBr3 NCs), which exhibit excellent thermodynamic stability. Both the pressure-dependent steady-state photoluminescence and absorption spectra experience a stark discontinuity at ∼1.2 GPa, where an isostructural phase transformation regarding the Pbnm space group occurs. The physical origin points to the repulsive force impact due to the overlap between the valence electron charge clouds of neighboring layers. Simultaneous band-gap narrowing and carrier-lifetime prolongation of CsPbBr3 trihalide perovskite NCs were also achieved as expected, which facilitates the broader solar spectrum absorption for photovoltaic applications. Note that the values of the phase change interval and band-gap red-shift of CsPbBr3 nanowires are between those for CsPbBr3 nanocubes and the corresponding bulk counterparts, which results from the unique geometrical morphology effect. First-principles calculations unravel that the band-gap engineering is governed by orbital interactions within the inorganic Pb-Br frame through structural modification. Changes of band structures are attributed to the synergistic effect of pressure-induced modulations of the Br-Pb bond length and Pb-Br-Pb bond angle for the PbBr6 octahedral framework. Furthermore, the significant distortion of the lead-bromide octahedron to accommodate the Jahn-Teller effect at much higher pressure would eventually lead to a direct to indirect band-gap electronic transition. This study enables high pressure as a robust tool to control the structure and band gap of CsPbBr3 NCs, thus providing insight into the microscopic physiochemical mechanism of these compressed MHP nanosystems.
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Affiliation(s)
- Guanjun Xiao
- State Key Laboratory of Superhard Materials, College of Materials Science and Engineering, Jilin University , Changchun 130012, People's Republic of China
| | - Ye Cao
- State Key Laboratory of Superhard Materials, College of Materials Science and Engineering, Jilin University , Changchun 130012, People's Republic of China
| | - Guangyu Qi
- State Key Laboratory of Superhard Materials, College of Materials Science and Engineering, Jilin University , Changchun 130012, People's Republic of China
| | - Lingrui Wang
- State Key Laboratory of Superhard Materials, College of Materials Science and Engineering, Jilin University , Changchun 130012, People's Republic of China
| | - Chuang Liu
- State Key Laboratory of Superhard Materials, College of Materials Science and Engineering, Jilin University , Changchun 130012, People's Republic of China
| | - Zhiwei Ma
- State Key Laboratory of Superhard Materials, College of Materials Science and Engineering, Jilin University , Changchun 130012, People's Republic of China
| | - Xinyi Yang
- State Key Laboratory of Superhard Materials, College of Materials Science and Engineering, Jilin University , Changchun 130012, People's Republic of China
| | - Yongming Sui
- State Key Laboratory of Superhard Materials, College of Materials Science and Engineering, Jilin University , Changchun 130012, People's Republic of China
| | - Weitao Zheng
- State Key Laboratory of Superhard Materials, College of Materials Science and Engineering, Jilin University , Changchun 130012, People's Republic of China
| | - Bo Zou
- State Key Laboratory of Superhard Materials, College of Materials Science and Engineering, Jilin University , Changchun 130012, People's Republic of China
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122
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Yan H, Ou T, Jiao H, Wang T, Wang Q, Liu C, Liu X, Han Y, Ma Y, Gao C. Pressure Dependence of Mixed Conduction and Photo Responsiveness in Organolead Tribromide Perovskites. J Phys Chem Lett 2017; 8:2944-2950. [PMID: 28613889 DOI: 10.1021/acs.jpclett.7b01022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The electrical transport properties of CH3NH3PbBr3 (MAPbBr3) polycrystals were in situ investigated by alternating-current impedance spectroscopy under high pressures up to 5.6 GPa. It is confirmed that ionic and electronic conductions coexist in MAPbBr3. As pressure below 3.3 GPa ions migration is the predominant process, while above 3.3 GPa electronic conduction becomes the main process. An obvious ionic-electronic transition can be observed. The pressure dependent photo responsiveness of MAPbBr3 was also studied by in situ photocurrent measurements up to 3.8 GPa. The mixed conduction can be clearly seen in photocurrent measurement. Additionally, the photocurrents remain robust below 2.4 GPa, while they are suppressed with pressure-induced partial amorphization. Interestingly, the photoelectric response of MAPbBr3 can be enhanced by high pressure, and the strongest photocurrent value appears in the high-pressure phase II at 0.7 GPa, which is similar to previous results in both MAPbI3 and MASnI3.
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Affiliation(s)
- Huacai Yan
- Institute of Atomic and Molecular Physics and State Key Laboratory of Superhard Materials, Jilin University , Changchun 130012, China
| | - Tianji Ou
- Institute of Atomic and Molecular Physics and State Key Laboratory of Superhard Materials, Jilin University , Changchun 130012, China
| | - Hui Jiao
- Institute of Atomic and Molecular Physics and State Key Laboratory of Superhard Materials, Jilin University , Changchun 130012, China
| | - Tianyi Wang
- Institute of Atomic and Molecular Physics and State Key Laboratory of Superhard Materials, Jilin University , Changchun 130012, China
| | - Qinglin Wang
- Shandong Key Laboratory of Optical Communication Science and Technology, School of Physical Science & Information Technology of Liaocheng University , Liaocheng 252059, China
| | - Cailong Liu
- Institute of Atomic and Molecular Physics and State Key Laboratory of Superhard Materials, Jilin University , Changchun 130012, China
| | - Xizhe Liu
- Institute of Atomic and Molecular Physics and State Key Laboratory of Superhard Materials, Jilin University , Changchun 130012, China
| | - Yonghao Han
- Institute of Atomic and Molecular Physics and State Key Laboratory of Superhard Materials, Jilin University , Changchun 130012, China
| | - Yanzhang Ma
- Department of Mechanical Engineering, Texas Tech University , Lubbock, Texas 79409, United States
| | - Chunxiao Gao
- Institute of Atomic and Molecular Physics and State Key Laboratory of Superhard Materials, Jilin University , Changchun 130012, China
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123
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Li Q, Sha X, Li S, Wang K, Quan Z, Meng Y, Zou B. High-Pressure Effects on Hofmann-Type Clathrates: Promoted Release and Restricted Insertion of Guest Molecules. J Phys Chem Lett 2017; 8:2745-2750. [PMID: 28581748 DOI: 10.1021/acs.jpclett.7b01057] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The search for effective methods to accurately control host-guest relationship is the central theme of host-guest chemistry. In this work, high pressure successfully promotes guest release in the Hofmann-type clathrate of [Ni(NH3)2Ni(CN)4]·2C6H6 (Ni-Bz) and restricts guest insertion into Ni(NH3)2Ni(CN)4 (Ni-Ni). Because of the weak host-guest interactions of Ni-Bz, external force gradually removes guest benzene from the host framework, leading to puckered layers. Further theoretical calculations reveal the positive pressure contribution to breaking the energy barrier between Ni-Bz and Ni-Ni, explaining guest release from an energy standpoint. Inversely, guest insertion is restricted in the synthesized host of Ni-Ni because of the steric hindrance effect at high pressure. This study not only reveals structural effects on host-guest behaviors but also proves the role of pressure in controlling host-guest interactions. This unique observation is also crucial for the further application of host-guest materials in sustained and intelligent drug release, molecular separation, and transportation.
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Affiliation(s)
- Qian Li
- Department of Chemistry, South University of Science and Technology of China , Shenzhen, 518055, China
| | - Xiaojing Sha
- Materials Genome Center, Beijing Institute of Aeronautical Materials , Beijing 100095, China
| | - Shourui Li
- National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics , Mianyang 621900, China
| | - Kai Wang
- State Key Laboratory of Superhard Materials, Jilin University , Changchun 130012, China
| | - Zewei Quan
- Department of Chemistry, South University of Science and Technology of China , Shenzhen, 518055, China
| | - Yue Meng
- High Pressure Collaborative Access Team (HPCAT), Geophysical Laboratory, CIW, Argonne, Illinois 60439, United States
| | - Bo Zou
- State Key Laboratory of Superhard Materials, Jilin University , Changchun 130012, China
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124
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Postorino P, Malavasi L. Pressure-Induced Effects in Organic-Inorganic Hybrid Perovskites. J Phys Chem Lett 2017; 8:2613-2622. [PMID: 28548495 DOI: 10.1021/acs.jpclett.7b00347] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In this Perspective, we provide an overview of the pressure-induced effects on hybrid organic-inorganic perovskite for photovoltaics applications. It is shown that a fine-tuning of the most relevant photovoltaic properties, including band gap and carrier lifetime, is indeed possible by applying pressure over a rather small range and that such phenomena closely correlate with pressure-induced structural changes. High-pressure research can be used to search for new materials since the high-pressure structural configuration can be used as a model for tailoring ambient pressure compounds under proper chemical substitution, and the band gap tuning and enhancement of carrier lifetime with applied pressures can be a guide to design new hybrid perovskites with desired optical properties as a function of structural parameters.
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Affiliation(s)
- Paolo Postorino
- Physics Department, University of Rome "Sapienza" , 00185 Rome, Italy
| | - Lorenzo Malavasi
- Chemistry Department, University of Pavia and INSTM , 27100 Pavia, Italy
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125
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Abstract
High-pressure studies on methylammonium trihaloplumbates, of general formula [CH3NH3]+PbX3- (abbreviated MAPbX3, where X = Cl, Br, I), and its analogues shed new light on the materials for harvesting solar energy and open new perspectives for photovoltaic science and technology. However, there are considerable discrepancies between the reported structural, calorimetric, and spectroscopic results and even between the results obtained by the same technique, for example, of X-ray diffraction. The origins of these discrepancies and possible pitfalls in the diffraction and spectroscopic studies on MAPbX3 crystals have been investigated. Several new effects revealed in this study involve phase transitions of exceptionally slow kinetics and the coexistence of phases. They strongly affect photovoltaic properties and are essential for theory, predictions, and technological applications.
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Affiliation(s)
- Marek Szafrański
- Faculty of Physics, Adam Mickiewicz University , Umultowska 85, 61-614 Poznań, Poland
| | - Andrzej Katrusiak
- Faculty of Chemistry, Adam Mickiewicz University , Umultowska 89b, 61-614 Poznań, Poland
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126
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Wang P, Guan J, Galeschuk DTK, Yao Y, He CF, Jiang S, Zhang S, Liu Y, Jin M, Jin C, Song Y. Pressure-Induced Polymorphic, Optical, and Electronic Transitions of Formamidinium Lead Iodide Perovskite. J Phys Chem Lett 2017; 8:2119-2125. [PMID: 28440079 DOI: 10.1021/acs.jpclett.7b00665] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Formamidinium lead iodide (FAPbI3) perovskite as a superior solar cell material was investigated in two polymorphs at high pressures using in situ synchrotron X-ray diffraction, FTIR spectroscopy, photoluminescence (PL) spectroscopy, electrical conductivity (EC) measurements, and ab initio calculations. We identified two new structures (i.e., Imm2 and Immm) for α-FAPbI3 but only a structural distortion (in C2/c) for δ-FAPbI3 upon compression. A pressure-enhanced hydrogen bond plays a prominent role in structural modifications, as corroborated by FTIR spectroscopy. PL measurements and calculations consistently show the structure and pressure dependences of the band gap energies. Finally, EC measurements reveal drastically different transport properties of α- and δ-FAPbI3 at low pressures but a common trend to metallic states at high pressures. All of these observations suggest strongly contrasting structural stabilities and pressure-tuned optoelectric properties of the two FAPbI3 polymorphs.
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Affiliation(s)
- Pan Wang
- Department of Chemistry, The University of Western Ontario , London, Ontario N6A 5B7, Canada
| | - Jiwen Guan
- Department of Physics and Astronomy, The University of Western Ontario , London, Ontario N6A 3K7, Canada
| | - Draven T K Galeschuk
- Department of Physics and Engineering Physics, University of Saskatchewan , Saskatoon, Saskatchewan S7N 5E2, Canada
| | - Yansun Yao
- Department of Physics and Engineering Physics, University of Saskatchewan , Saskatoon, Saskatchewan S7N 5E2, Canada
- Canadian Light Source Inc. , Saskatoon, Saskatchewan S7N 2V3, Canada
| | - Cindy F He
- Department of Chemistry, The University of Western Ontario , London, Ontario N6A 5B7, Canada
| | - Shan Jiang
- Department of Chemistry, The University of Western Ontario , London, Ontario N6A 5B7, Canada
| | - Sijia Zhang
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China
| | - Ying Liu
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China
| | - Meiling Jin
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China
| | - Changqing Jin
- Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China
| | - Yang Song
- Department of Chemistry, The University of Western Ontario , London, Ontario N6A 5B7, Canada
- Department of Physics and Astronomy, The University of Western Ontario , London, Ontario N6A 3K7, Canada
- Soochow University-Western University Centre for Synchrotron Radiation Research, The University of Western Ontario , London, Ontario N6A 5B7, Canada
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127
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Nagaoka Y, Hills-Kimball K, Tan R, Li R, Wang Z, Chen O. Nanocube Superlattices of Cesium Lead Bromide Perovskites and Pressure-Induced Phase Transformations at Atomic and Mesoscale Levels. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1606666. [PMID: 28295682 DOI: 10.1002/adma.201606666] [Citation(s) in RCA: 129] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 01/29/2017] [Indexed: 05/21/2023]
Abstract
Lead halide perovskites are promising materials for a range of applications owing to their unique crystal structure and optoelectronic properties. Understanding the relationship between the atomic/mesostructures and the associated properties of perovskite materials is crucial to their application performances. Herein, the detailed pressure processing of CsPbBr3 perovskite nanocube superlattices (NC-SLs) is reported for the first time. By using in situ synchrotron-based small/wide angle X-ray scattering and photoluminescence (PL) probes, the NC-SL structural transformations are correlated at both atomic and mesoscale levels with the band-gap evolution through a pressure cycle of 0 ↔ 17.5 GPa. After the pressurization, the individual CsPbBr3 NCs fuse into 2D nanoplatelets (NPLs) with a uniform thickness. The pressure-synthesized perovskite NPLs exhibit a single cubic crystal structure, a 1.6-fold enhanced photoluminescence quantum yield, and a longer emission lifetime than the starting NCs. This study demonstrates that pressure processing can serve as a novel approach for the rapid conversion of lead halide perovskites into structures with enhanced properties.
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Affiliation(s)
- Yasutaka Nagaoka
- Department of Chemistry, Brown University, 324 Brook St. Providence, RI, 02912, USA
| | - Katie Hills-Kimball
- Department of Chemistry, Brown University, 324 Brook St. Providence, RI, 02912, USA
| | - Rui Tan
- Department of Chemistry, Brown University, 324 Brook St. Providence, RI, 02912, USA
| | - Ruipeng Li
- Cornell High Energy Synchrotron Source, Cornell University, Ithaca, NY, 14853, USA
| | - Zhongwu Wang
- Cornell High Energy Synchrotron Source, Cornell University, Ithaca, NY, 14853, USA
| | - Ou Chen
- Department of Chemistry, Brown University, 324 Brook St. Providence, RI, 02912, USA
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128
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Zeng W, Liu X, Guo X, Niu Q, Yi J, Xia R, Min Y. Morphology Analysis and Optimization: Crucial Factor Determining the Performance of Perovskite Solar Cells. Molecules 2017; 22:E520. [PMID: 28338627 PMCID: PMC6153754 DOI: 10.3390/molecules22040520] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Revised: 03/09/2017] [Accepted: 03/21/2017] [Indexed: 11/22/2022] Open
Abstract
This review presents an overall discussion on the morphology analysis and optimization for perovskite (PVSK) solar cells. Surface morphology and energy alignment have been proven to play a dominant role in determining the device performance. The effect of the key parameters such as solution condition and preparation atmosphere on the crystallization of PVSK, the characterization of surface morphology and interface distribution in the perovskite layer is discussed in detail. Furthermore, the analysis of interface energy level alignment by using X-ray photoelectron spectroscopy and ultraviolet photoelectron spectroscopy is presented to reveals the correlation between morphology and charge generation and collection within the perovskite layer, and its influence on the device performance. The techniques including architecture modification, solvent annealing, etc. were reviewed as an efficient approach to improve the morphology of PVSK. It is expected that further progress will be achieved with more efforts devoted to the insight of the mechanism of surface engineering in the field of PVSK solar cells.
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Affiliation(s)
- Wenjin Zeng
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) & Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Xingming Liu
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) & Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Xiangru Guo
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) & Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Qiaoli Niu
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) & Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Jianpeng Yi
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) & Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Ruidong Xia
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) & Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Yong Min
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) & Institute of Advanced Materials (IAM), Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
- The School of Materials and Energy, Guangdong University of Technology, Panyu, Guangzhou 510006, China.
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129
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van der Stam W, Geuchies JJ, Altantzis T, van den Bos KHW, Meeldijk JD, Van Aert S, Bals S, Vanmaekelbergh D, de Mello Donega C. Highly Emissive Divalent-Ion-Doped Colloidal CsPb 1-xM xBr 3 Perovskite Nanocrystals through Cation Exchange. J Am Chem Soc 2017; 139:4087-4097. [PMID: 28260380 PMCID: PMC5364419 DOI: 10.1021/jacs.6b13079] [Citation(s) in RCA: 274] [Impact Index Per Article: 39.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Indexed: 12/22/2022]
Abstract
Colloidal CsPbX3 (X = Br, Cl, and I) perovskite nanocrystals (NCs) have emerged as promising phosphors and solar cell materials due to their remarkable optoelectronic properties. These properties can be tailored by not only controlling the size and shape of the NCs but also postsynthetic composition tuning through topotactic anion exchange. In contrast, property control by cation exchange is still underdeveloped for colloidal CsPbX3 NCs. Here, we present a method that allows partial cation exchange in colloidal CsPbBr3 NCs, whereby Pb2+ is exchanged for several isovalent cations, resulting in doped CsPb1-xMxBr3 NCs (M= Sn2+, Cd2+, and Zn2+; 0 < x ≤ 0.1), with preservation of the original NC shape. The size of the parent NCs is also preserved in the product NCs, apart from a small (few %) contraction of the unit cells upon incorporation of the guest cations. The partial Pb2+ for M2+ exchange leads to a blue-shift of the optical spectra, while maintaining the high photoluminescence quantum yields (>50%), sharp absorption features, and narrow emission of the parent CsPbBr3 NCs. The blue-shift in the optical spectra is attributed to the lattice contraction that accompanies the Pb2+ for M2+ cation exchange and is observed to scale linearly with the lattice contraction. This work opens up new possibilities to engineer the properties of halide perovskite NCs, which to date are demonstrated to be the only known system where cation and anion exchange reactions can be sequentially combined while preserving the original NC shape, resulting in compositionally diverse perovskite NCs.
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Affiliation(s)
- Ward van der Stam
- Condensed
Matter and Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, P.O.
Box 80000, 3508 TA Utrecht, The Netherlands
| | - Jaco J. Geuchies
- Condensed
Matter and Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, P.O.
Box 80000, 3508 TA Utrecht, The Netherlands
| | - Thomas Altantzis
- EMAT, University
of Antwerp, Groenenborgerlaan
171, B-2020 Antwerp, Belgium
| | | | - Johannes D. Meeldijk
- Electron
Microscopy Utrecht, Utrecht University, 3584 CH Utrecht, The Netherlands
| | - Sandra Van Aert
- EMAT, University
of Antwerp, Groenenborgerlaan
171, B-2020 Antwerp, Belgium
| | - Sara Bals
- EMAT, University
of Antwerp, Groenenborgerlaan
171, B-2020 Antwerp, Belgium
| | - Daniel Vanmaekelbergh
- Condensed
Matter and Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, P.O.
Box 80000, 3508 TA Utrecht, The Netherlands
| | - Celso de Mello Donega
- Condensed
Matter and Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, P.O.
Box 80000, 3508 TA Utrecht, The Netherlands
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130
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Li Q, Li S, Wang K, Quan Z, Meng Y, Zou B. High-Pressure Study of Perovskite-Like Organometal Halide: Band-Gap Narrowing and Structural Evolution of [NH 3-(CH 2) 4-NH 3]CuCl 4. J Phys Chem Lett 2017; 8:500-506. [PMID: 28071054 DOI: 10.1021/acs.jpclett.6b02786] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Searching for nontoxic and stable perovskite-like alternatives to lead-based halide perovskites for photovoltaic application is one urgent issue in photoelectricity science. Such exploration inevitably requires an effective method to accurately control both the crystalline and electronic structures. This work applies high pressure to narrow the band gap of perovskite-like organometal halide, [NH3-(CH2)4-NH3]CuCl4 (DABCuCl4), through the crystalline-structure tuning. The band gap keeps decreasing below ∼12 GPa, involving the shrinkage and distortion of CuCl42-. Inorganic distortion determines both band-gap narrowing and phase transition between 6.4 and 10.5 GPa, and organic chains function as the spring cushion, evidenced by the structural transition at ∼0.8 GPa. The supporting function of organic chains protects DABCuCl4 from phase transition and amorphization, which also contributes to the sustaining band-gap narrowing. This work combines crystal structure and macroscopic property together and offers new strategies for the further design and synthesis of hybrid perovskite-like alternatives.
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Affiliation(s)
- Qian Li
- State Key Laboratory of Superhard Materials, Jilin University , Changchun 130012, China
- Department of Chemistry, South University of Science and Technology of China , Shenzhen, Guangdong 518055, China
- High Pressure Collaborative Access Team (HPCAT), Geophysical Laboratory, Carnegie Institution of Washington , Argonne, Illinois 60439, United States
| | - Shourui Li
- National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy Of Engineering Physics , Mianyang 621900, China
| | - Kai Wang
- State Key Laboratory of Superhard Materials, Jilin University , Changchun 130012, China
| | - Zewei Quan
- Department of Chemistry, South University of Science and Technology of China , Shenzhen, Guangdong 518055, China
| | - Yue Meng
- High Pressure Collaborative Access Team (HPCAT), Geophysical Laboratory, Carnegie Institution of Washington , Argonne, Illinois 60439, United States
| | - Bo Zou
- State Key Laboratory of Superhard Materials, Jilin University , Changchun 130012, China
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131
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Sun S, Deng Z, Wu Y, Wei F, Halis Isikgor F, Brivio F, Gaultois MW, Ouyang J, Bristowe PD, Cheetham AK, Kieslich G. Variable temperature and high-pressure crystal chemistry of perovskite formamidinium lead iodide: a single crystal X-ray diffraction and computational study. Chem Commun (Camb) 2017. [DOI: 10.1039/c7cc00995j] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Single crystals of [(NH2)2CH]PbI3 undergo a cubic-to-tetragonal phase transition at low temperature and high pressure.
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Affiliation(s)
- Shijing Sun
- Department of Materials Science and Metallurgy
- University of Cambridge Cambridge
- UK
| | - Zeyu Deng
- Department of Materials Science and Metallurgy
- University of Cambridge Cambridge
- UK
| | - Yue Wu
- Department of Materials Science and Metallurgy
- University of Cambridge Cambridge
- UK
| | - Fengxia Wei
- Department of Materials Science and Metallurgy
- University of Cambridge Cambridge
- UK
- Institute of Materials Research and Engineering
- Agency for Science
| | - Furkan Halis Isikgor
- Department of Materials Science and Engineering
- National University of Singapore
- Singapore
| | - Federico Brivio
- Department of Materials Science and Metallurgy
- University of Cambridge Cambridge
- UK
| | | | - Jianyong Ouyang
- Department of Materials Science and Engineering
- National University of Singapore
- Singapore
| | - Paul D. Bristowe
- Department of Materials Science and Metallurgy
- University of Cambridge Cambridge
- UK
| | - Anthony K. Cheetham
- Department of Materials Science and Metallurgy
- University of Cambridge Cambridge
- UK
| | - Gregor Kieslich
- Department of Materials Science and Metallurgy
- University of Cambridge Cambridge
- UK
- Department of Chemistry
- Technical University of Munich
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132
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Xin L, Fan Z, Li G, Zhang M, Han Y, Wang J, Ong KP, Qin L, Zheng Y, Lou X. Growth of centimeter-sized [(CH3)2NH2][Mn(HCOO)3] hybrid formate perovskite single crystals and Raman evidence of pressure-induced phase transitions. NEW J CHEM 2017. [DOI: 10.1039/c6nj02798a] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The fewer the number of the nucleation sites formed in the vessel, the larger the size of the obtained crystals.
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133
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Wang L, Wang K, Xiao G, Zeng Q, Zou B. Pressure-Induced Structural Evolution and Band Gap Shifts of Organometal Halide Perovskite-Based Methylammonium Lead Chloride. J Phys Chem Lett 2016; 7:5273-5279. [PMID: 27973869 DOI: 10.1021/acs.jpclett.6b02420] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Organometal halide perovskites are promising materials for optoelectronic devices. Further development of these devices requires a deep understanding of their fundamental structure-property relationships. The effect of pressure on the structural evolution and band gap shifts of methylammonium lead chloride (MAPbCl3) was investigated systematically. Synchrotron X-ray diffraction and Raman experiments provided structural information on the shrinkage, tilting distortion, and amorphization of the primitive cubic unit cell. In situ high pressure optical absorption and photoluminescence spectra manifested that the band gap of MAPbCl3 could be fine-tuned to the ultraviolet region by pressure. The optical changes are correlated with pressure-induced structural evolution of MAPbCl3, as evidenced by band gap shifts. Comparisons between Pb-hybrid perovskites and inorganic octahedra provided insights on the effects of halogens on pressure-induced transition sequences of these compounds. Our results improve the understanding of the structural and optical properties of organometal halide perovskites.
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Affiliation(s)
- Lingrui Wang
- State Key Laboratory of Superhard Materials, Jilin University , Changchun 130012, China
| | - Kai Wang
- State Key Laboratory of Superhard Materials, Jilin University , Changchun 130012, China
| | - Guanjun Xiao
- State Key Laboratory of Superhard Materials, Jilin University , Changchun 130012, China
| | - Qiaoshi Zeng
- Center for High Pressure Science & Technology Advanced Research , Shanghai 201203, China
| | - Bo Zou
- State Key Laboratory of Superhard Materials, Jilin University , Changchun 130012, China
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134
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Gao Z, Wang K, Liu F, Feng C, He X, Li J, Yang B, Zou B, Lu P. Enhanced Sensitivity and Piezochromic Contrast through Single-Direction Extension of Molecular Structure. Chemistry 2016; 23:773-777. [PMID: 27796058 DOI: 10.1002/chem.201604923] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Indexed: 11/05/2022]
Affiliation(s)
- Zhao Gao
- State Key Laboratory of Supramolecular Structure and Materials; Jilin University; Qianjin Street No. 2699 Changchun 130012 P. R. China
| | - Kai Wang
- State Key Laboratory of Superhard Materials; Jilin University; Qianjin Street No. 2699 Changchun 130012 P. R. China
| | - Fangming Liu
- State Key Laboratory of Supramolecular Structure and Materials; Jilin University; Qianjin Street No. 2699 Changchun 130012 P. R. China
| | - Cunfang Feng
- State Key Laboratory of Supramolecular Structure and Materials; Jilin University; Qianjin Street No. 2699 Changchun 130012 P. R. China
| | - Xin He
- State Key Laboratory of Supramolecular Structure and Materials; Jilin University; Qianjin Street No. 2699 Changchun 130012 P. R. China
| | - Jinyu Li
- State Key Laboratory of Supramolecular Structure and Materials; Jilin University; Qianjin Street No. 2699 Changchun 130012 P. R. China
| | - Bing Yang
- State Key Laboratory of Supramolecular Structure and Materials; Jilin University; Qianjin Street No. 2699 Changchun 130012 P. R. China
| | - Bo Zou
- State Key Laboratory of Superhard Materials; Jilin University; Qianjin Street No. 2699 Changchun 130012 P. R. China
| | - Ping Lu
- State Key Laboratory of Supramolecular Structure and Materials; Jilin University; Qianjin Street No. 2699 Changchun 130012 P. R. China
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135
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Lü X, Wang Y, Stoumpos CC, Hu Q, Guo X, Chen H, Yang L, Smith JS, Yang W, Zhao Y, Xu H, Kanatzidis MG, Jia Q. Enhanced Structural Stability and Photo Responsiveness of CH 3 NH 3 SnI 3 Perovskite via Pressure-Induced Amorphization and Recrystallization. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:8663-8668. [PMID: 27514760 DOI: 10.1002/adma.201600771] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 07/07/2016] [Indexed: 05/18/2023]
Abstract
An organic-inorganic halide CH3 NH3 SnI3 perovskite with significantly improved structural stability is obtained via pressure-induced amorphization and recrystallization. In situ high-pressure resistance measurements reveal an increased electrical conductivity by 300% in the pressure-treated perovskite. Photocurrent measurements also reveal a substantial enhancement in visible-light responsiveness. The mechanism underlying the enhanced properties is shown to be associated with the pressure-induced structural modification.
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Affiliation(s)
- Xujie Lü
- Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA
- Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA
| | - Yonggang Wang
- High Pressure Science and Engineering Center (HiPSEC), University of Nevada Las Vegas, Las Vegas, NV, 89154, USA
- High Pressure Synergetic Consortium (HPSynC), Carnegie Institution of Washington, Argonne, IL, 60439, USA
| | | | - Qingyang Hu
- Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC, 20015, USA
- Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai, 201203, China
| | - Xiaofeng Guo
- Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA
| | - Haijie Chen
- Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA
| | - Liuxiang Yang
- High Pressure Synergetic Consortium (HPSynC), Carnegie Institution of Washington, Argonne, IL, 60439, USA
| | - Jesse S Smith
- High Pressure Collaborative Access Team (HPCAT), Carnegie Institution of Washington, Argonne, IL, 60439, USA
| | - Wenge Yang
- High Pressure Synergetic Consortium (HPSynC), Carnegie Institution of Washington, Argonne, IL, 60439, USA
- Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai, 201203, China
| | - Yusheng Zhao
- High Pressure Science and Engineering Center (HiPSEC), University of Nevada Las Vegas, Las Vegas, NV, 89154, USA.
- Department of Physics, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Hongwu Xu
- Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA.
| | | | - Quanxi Jia
- Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA.
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136
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Soe CMM, Stoumpos CC, Harutyunyan B, Manley EF, Chen LX, Bedzyk MJ, Marks TJ, Kanatzidis MG. Room Temperature Phase Transition in Methylammonium Lead Iodide Perovskite Thin Films Induced by Hydrohalic Acid Additives. CHEMSUSCHEM 2016; 9:2656-2665. [PMID: 27628708 DOI: 10.1002/cssc.201600879] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Revised: 08/15/2016] [Indexed: 06/06/2023]
Abstract
Although reactive additives have been employed in perovskite solar cells to enhance film morphology and significantly increase device performance, little is known about the effect of these additives on perovskite structural and optical properties. Here we report a systematic study of how the properties of methylammonium lead iodide perovskite (CH3 NH3 PbI3 ) are influenced by hydrohalic acid additives (HX; X=I, Br, Cl) in the precursor solution. Detailed structural and optical spectroscopic analysis reveals that all three acids affect the optical properties and alter the unit cell lattice parameters. Depending on the identity and concentration of HX, optical bandgaps widen or compress: addition of HBr yields a wider bandgap, whereas HI compresses the gap at high concentrations; HCl, on the other hand, has no significant effect on the bandgap. These changes can be understood by correlating them with the types of defects present in polycrystalline perovskite thin films in combination with the structural strain induced in very small crystallites. The presence of extra halides from HX in the precursor solution enables filling of the lattice vacancies in the perovskite, thereby altering metal-halogen-metal bond connectivity and consequently cell volumes and optical bandgaps. Remarkably, a room temperature tetragonal→cubic phase transition is observed for CH3 NH3 PbI3 films treated with high HX concentrations. Further insights into this anomalous phase transformation are obtained from in situ variable-temperature X-ray diffraction in the 25-55 °C (298-328 K) range, revealing a monotonic fall in transition temperature with increasing precursor solution HX concentration.
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Affiliation(s)
- Chan Myae Myae Soe
- Department of Chemistry, Northwestern University, Evanston, IL, 60628, USA
- Argonne-Northwestern Solar Energy Research Center, Northwestern University, Evanston, Illinois, 60208, USA
| | | | - Boris Harutyunyan
- Argonne-Northwestern Solar Energy Research Center, Northwestern University, Evanston, Illinois, 60208, USA
- Departments of Physics and Astronomy and Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, USA
| | - Eric F Manley
- Department of Chemistry, Northwestern University, Evanston, IL, 60628, USA
- Argonne-Northwestern Solar Energy Research Center, Northwestern University, Evanston, Illinois, 60208, USA
- Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 S. Cass Ave., Lemont, IL, 60439, USA
| | - Lin X Chen
- Department of Chemistry, Northwestern University, Evanston, IL, 60628, USA
- Argonne-Northwestern Solar Energy Research Center, Northwestern University, Evanston, Illinois, 60208, USA
- Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 S. Cass Ave., Lemont, IL, 60439, USA
| | - Michael J Bedzyk
- Argonne-Northwestern Solar Energy Research Center, Northwestern University, Evanston, Illinois, 60208, USA
- Departments of Physics and Astronomy and Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, USA
| | - Tobin J Marks
- Department of Chemistry, Northwestern University, Evanston, IL, 60628, USA.
- Argonne-Northwestern Solar Energy Research Center, Northwestern University, Evanston, Illinois, 60208, USA.
| | - Mercouri G Kanatzidis
- Department of Chemistry, Northwestern University, Evanston, IL, 60628, USA.
- Argonne-Northwestern Solar Energy Research Center, Northwestern University, Evanston, Illinois, 60208, USA.
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137
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Szafrański M, Katrusiak A. Mechanism of Pressure-Induced Phase Transitions, Amorphization, and Absorption-Edge Shift in Photovoltaic Methylammonium Lead Iodide. J Phys Chem Lett 2016; 7:3458-66. [PMID: 27538989 DOI: 10.1021/acs.jpclett.6b01648] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Our single-crystal X-ray diffraction study of methylammonium lead triiodide, MAPbI3, provides the first comprehensive structural information on the tetragonal phase II in the pressure range to 0.35 GPa, on the cubic phase IV stable between 0.35 and 2.5 GPa, and on the isostructural cubic phase V observed above 2.5 GPa, which undergoes a gradual amorphization. The optical absorption study confirms that up to 0.35 GPa, the absorption edge of MAPbI3 is red-shifted, allowing an extension of spectral absorption. The transitions to phases IV and V are associated with the abrupt blue shifts of the absorption edge. The strong increase of the energy gap in phase V result in a spectacular color change of the crystal from black to red around 3.5 GPa. The optical changes have been correlated with the pressure-induced strain of the MAPbI3 inorganic framework and its frustration, triggered by methylammonium cations trapped at random orientations in the squeezed voids.
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Affiliation(s)
- Marek Szafrański
- Faculty of Physics, Adam Mickiewicz University , Umultowska 85, 61-614 Poznań, Poland
| | - Andrzej Katrusiak
- Faculty of Chemistry, Adam Mickiewicz University , Umultowska 89b, 61-614 Poznań, Poland
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138
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Synthesis, structural and optical characterization of APbX3 (A=methylammonium, dimethylammonium, trimethylammonium; X=I, Br, Cl) hybrid organic-inorganic materials. J SOLID STATE CHEM 2016. [DOI: 10.1016/j.jssc.2016.05.015] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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139
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Simultaneous band-gap narrowing and carrier-lifetime prolongation of organic-inorganic trihalide perovskites. Proc Natl Acad Sci U S A 2016; 113:8910-5. [PMID: 27444014 DOI: 10.1073/pnas.1609030113] [Citation(s) in RCA: 122] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The organic-inorganic hybrid lead trihalide perovskites have been emerging as the most attractive photovoltaic materials. As regulated by Shockley-Queisser theory, a formidable materials science challenge for improvement to the next level requires further band-gap narrowing for broader absorption in solar spectrum, while retaining or even synergistically prolonging the carrier lifetime, a critical factor responsible for attaining the near-band-gap photovoltage. Herein, by applying controllable hydrostatic pressure, we have achieved unprecedented simultaneous enhancement in both band-gap narrowing and carrier-lifetime prolongation (up to 70% to ∼100% increase) under mild pressures at ∼0.3 GPa. The pressure-induced modulation on pure hybrid perovskites without introducing any adverse chemical or thermal effect clearly demonstrates the importance of band edges on the photon-electron interaction and maps a pioneering route toward a further increase in their photovoltaic performance.
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140
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Wang L, Wang K, Zou B. Pressure-Induced Structural and Optical Properties of Organometal Halide Perovskite-Based Formamidinium Lead Bromide. J Phys Chem Lett 2016; 7:2556-62. [PMID: 27321024 DOI: 10.1021/acs.jpclett.6b00999] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Organometal halide perovskites (OMHPs) are attracting an ever-growing scientific interest as photovoltaic materials with moderate cost and compelling properties. In this Letter, pressure-induced optical and structural changes of OMHP-based formamidinium lead bromide (FAPbBr3) were systematically investigated. We studied the pressure dependence of optical absorption and photoluminescence, both of which showed piezochromism. Synchrotron X-ray diffraction indicated that FAPbBr3 underwent two phase transitions and subsequent amorphization, leading directly to the bandgap evolution with redshift followed by blueshift during compression. Raman experiments illustrated the high pressure behavior of organic cation and the surrounding inorganic octahedra. Additionally, the effect of cation size and the different intermolecular interactions between organic cation and inorganic octahedra result in the fact that FAPbBr3 is less compressible than the reported methylammonium lead bromide (MAPbBr3). High pressure studies of the structural evolution and optical properties of OMHPs provide important clues in optimizing photovoltaic performance and help to design novel OMHPs with higher stimuli-resistant ability.
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Affiliation(s)
- Lingrui Wang
- State Key Laboratory of Superhard Materials, Jilin University , Changchun 130012, China
| | - Kai Wang
- State Key Laboratory of Superhard Materials, Jilin University , Changchun 130012, China
| | - Bo Zou
- State Key Laboratory of Superhard Materials, Jilin University , Changchun 130012, China
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141
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Ou T, Yan J, Xiao C, Shen W, Liu C, Liu X, Han Y, Ma Y, Gao C. Visible light response, electrical transport, and amorphization in compressed organolead iodine perovskites. NANOSCALE 2016; 8:11426-11431. [PMID: 26880393 DOI: 10.1039/c5nr07842c] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Recent scientific advances on organic-inorganic hybrid perovskites are mainly focused on the improvement of power conversion efficiency. So far, how compression tunes their electronic and structural properties remains less understood. By combining in situ photocurrent, impedance spectroscopy, and X-ray diffraction (XRD) measurements, we have studied the electrical transport and structural properties of compressed CH3NH3PbI3 (MAPbI3) nanorods. The visible light response of MAPbI3 remains robust below 3 GPa while it is suppressed when it becomes amorphous. Pressure-induced electrical transport properties of MAPbI3 including resistance, relaxation frequency, and relative permittivity have been investigated under pressure up to 8.5 GPa by in situ impedance spectroscopy measurements. These results indicate that the discontinuous changes of these physical parameters occur around the structural phase transition pressure. The XRD studies of MAPbI3 under high pressure up to 20.9 GPa show that a phase transformation below 0.7 GPa, could be attributed to the tilting and distortion of PbI6 octahedra. And pressure-induced amorphization is reversible at a low density amorphous state but irreversible at a relatively higher density state. Furthermore, the MAPbI3 nanorods crush into nanopieces around 0.9 GPa which helps us to explain why the mixed phase of tetragonal and orthorhombic was observed at 0.5 GPa. The pressure modulated changes of electrical transport and visible light response properties open up a new approach for exploring CH3NH3PbI3-based photo-electronic applications.
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Affiliation(s)
- Tianji Ou
- State Key Laboratory of Superhard Materials, Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China.
| | - Jiejuan Yan
- State Key Laboratory of Superhard Materials, Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China.
| | - Chuanhai Xiao
- State Key Laboratory of Superhard Materials, Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China.
| | - Wenshu Shen
- State Key Laboratory of Superhard Materials, Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China.
| | - Cailong Liu
- State Key Laboratory of Superhard Materials, Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China.
| | - Xizhe Liu
- State Key Laboratory of Superhard Materials, Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China.
| | - Yonghao Han
- State Key Laboratory of Superhard Materials, Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China.
| | - Yanzhang Ma
- Department of Mechanical Engineering, Texas Tech University, Lubbock, Texas 79409, USA
| | - Chunxiao Gao
- State Key Laboratory of Superhard Materials, Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China.
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142
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Yan X, Dong H, Li Y, Lin C, Park C, He D, Yang W. Phase transition induced strain in ZnO under high pressure. Sci Rep 2016; 6:24958. [PMID: 27173609 PMCID: PMC4865855 DOI: 10.1038/srep24958] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 04/06/2016] [Indexed: 11/10/2022] Open
Abstract
Under high pressure, the phase transition mechanism and mechanical property of material are supposed to be largely associated with the transformation induced elastic strain. However, the experimental evidences for such strain are scanty. The elastic and plastic properties of ZnO, a leading material for applications in chemical sensor, catalyst, and optical thin coatings, were determined using in situ high pressure synchrotron axial and radial x-ray diffraction. The abnormal elastic behaviors of selected lattice planes of ZnO during phase transition revealed the existence of internal elastic strain, which arise from the lattice misfit between wurtzite and rocksalt phase. Furthermore, the strength decrease of ZnO during phase transition under non-hydrostatic pressure was observed and could be attributed to such internal elastic strain, unveiling the relationship between pressure induced internal strain and mechanical property of material. These findings are of fundamental importance to understanding the mechanism of phase transition and the properties of materials under pressure.
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Affiliation(s)
- Xiaozhi Yan
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, P. R. China.,Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai 201203, P. R. China
| | - Haini Dong
- Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai 201203, P. R. China.,Key Laboratory of High-temperature and High-pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, Guizhou 550081, China
| | - Yanchun Li
- Beijing Synchrotron Radiation Laboratory, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Chuanlong Lin
- HPCAT, Carnegie Institution of Washington, 9700 South Cass Avenue, Argonne, Illinois 60439, US
| | - Changyong Park
- HPCAT, Carnegie Institution of Washington, 9700 South Cass Avenue, Argonne, Illinois 60439, US
| | - Duanwei He
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, P. R. China.,Institute of Fluid Physics and National Key Laboratory of Shockwave and Detonation Physic, China Academy of Engineering Physics, Mianyang 621900, P. R. China
| | - Wenge Yang
- Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai 201203, P. R. China.,High Pressure Synergetic Consortium (HPSynC), Geophysical Laboratory, Carnegie Institution of Washington, Argonne, Illinois 60439, USA
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143
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Jaffe A, Lin Y, Beavers CM, Voss J, Mao WL, Karunadasa HI. High-Pressure Single-Crystal Structures of 3D Lead-Halide Hybrid Perovskites and Pressure Effects on their Electronic and Optical Properties. ACS CENTRAL SCIENCE 2016; 2:201-9. [PMID: 27163050 PMCID: PMC4850512 DOI: 10.1021/acscentsci.6b00055] [Citation(s) in RCA: 164] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Indexed: 05/18/2023]
Abstract
We report the first high-pressure single-crystal structures of hybrid perovskites. The crystalline semiconductors (MA)PbX3 (MA = CH3NH3 (+), X = Br(-) or I(-)) afford us the rare opportunity of understanding how compression modulates their structures and thereby their optoelectronic properties. Using atomic coordinates obtained from high-pressure single-crystal X-ray diffraction we track the perovskites' precise structural evolution upon compression. These structural changes correlate well with pressure-dependent single-crystal photoluminescence (PL) spectra and high-pressure bandgaps derived from density functional theory. We further observe dramatic piezochromism where the solids become lighter in color and then transition to opaque black with compression. Indeed, electronic conductivity measurements of (MA)PbI3 obtained within a diamond-anvil cell show that the material's resistivity decreases by 3 orders of magnitude between 0 and 51 GPa. The activation energy for conduction at 51 GPa is only 13.2(3) meV, suggesting that the perovskite is approaching a metallic state. Furthermore, the pressure response of mixed-halide perovskites shows new luminescent states that emerge at elevated pressures. We recently reported that the perovskites (MA)Pb(Br x I1-x )3 (0.2 < x < 1) reversibly form light-induced trap states, which pin their PL to a low energy. This may explain the low voltages obtained from solar cells employing these absorbers. Our high-pressure PL data indicate that compression can mitigate this PL redshift and may afford higher steady-state voltages from these absorbers. These studies show that pressure can significantly alter the transport and thermodynamic properties of these technologically important semiconductors.
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Affiliation(s)
- Adam Jaffe
- Departments of Chemistry and Geological Sciences, Stanford University, Stanford, California 94305, United States
| | - Yu Lin
- Departments of Chemistry and Geological Sciences, Stanford University, Stanford, California 94305, United States
- Photon
Science and Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Christine M. Beavers
- Advanced
Light Source, Lawrence Berkeley National
Laboratory, Berkeley, California 94720, United States
| | - Johannes Voss
- SUNCAT
Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Wendy L. Mao
- Departments of Chemistry and Geological Sciences, Stanford University, Stanford, California 94305, United States
- Photon
Science and Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
- E-mail:
| | - Hemamala I. Karunadasa
- Departments of Chemistry and Geological Sciences, Stanford University, Stanford, California 94305, United States
- E-mail:
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144
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Jiang S, Fang Y, Li R, Xiao H, Crowley J, Wang C, White TJ, Goddard WA, Wang Z, Baikie T, Fang J. Pressure‐Dependent Polymorphism and Band‐Gap Tuning of Methylammonium Lead Iodide Perovskite. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601788] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Shaojie Jiang
- Materials Science and Engineering Program State University of New York at Binghamton Binghamton NY 13902 USA
| | - Yanan Fang
- Energy Research Institute@NTU (ERI@N) Nanyang Technological University 50 Nanyang Drive Singapore 637553 Republic of Singapore
| | - Ruipeng Li
- Cornell High Energy Synchrotron Source Cornell University Ithaca NY 14853 USA
| | - Hai Xiao
- Materials and Process Simulation Center (MSC) and Joint Center for Artificial Photosynthesis (JCAP) California Institute of Technology Pasadena CA 91125 USA
| | - Jason Crowley
- Materials and Process Simulation Center (MSC) and Joint Center for Artificial Photosynthesis (JCAP) California Institute of Technology Pasadena CA 91125 USA
| | - Chenyu Wang
- Department of Chemistry State University of New York at Binghamton Binghamton NY 13902 USA
| | - Timothy J. White
- School of Materials Science and Engineering Nanyang Technological University Nanyang Avenue Singapore 639798 Republic of Singapore
| | - William A. Goddard
- Materials and Process Simulation Center (MSC) and Joint Center for Artificial Photosynthesis (JCAP) California Institute of Technology Pasadena CA 91125 USA
| | - Zhongwu Wang
- Cornell High Energy Synchrotron Source Cornell University Ithaca NY 14853 USA
| | - Tom Baikie
- Energy Research Institute@NTU (ERI@N) Nanyang Technological University 50 Nanyang Drive Singapore 637553 Republic of Singapore
| | - Jiye Fang
- Materials Science and Engineering Program State University of New York at Binghamton Binghamton NY 13902 USA
- Department of Chemistry State University of New York at Binghamton Binghamton NY 13902 USA
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145
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Jiang S, Fang Y, Li R, Xiao H, Crowley J, Wang C, White TJ, Goddard WA, Wang Z, Baikie T, Fang J. Pressure‐Dependent Polymorphism and Band‐Gap Tuning of Methylammonium Lead Iodide Perovskite. Angew Chem Int Ed Engl 2016; 55:6540-4. [DOI: 10.1002/anie.201601788] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Indexed: 11/05/2022]
Affiliation(s)
- Shaojie Jiang
- Materials Science and Engineering Program State University of New York at Binghamton Binghamton NY 13902 USA
| | - Yanan Fang
- Energy Research Institute@NTU (ERI@N) Nanyang Technological University 50 Nanyang Drive Singapore 637553 Republic of Singapore
| | - Ruipeng Li
- Cornell High Energy Synchrotron Source Cornell University Ithaca NY 14853 USA
| | - Hai Xiao
- Materials and Process Simulation Center (MSC) and Joint Center for Artificial Photosynthesis (JCAP) California Institute of Technology Pasadena CA 91125 USA
| | - Jason Crowley
- Materials and Process Simulation Center (MSC) and Joint Center for Artificial Photosynthesis (JCAP) California Institute of Technology Pasadena CA 91125 USA
| | - Chenyu Wang
- Department of Chemistry State University of New York at Binghamton Binghamton NY 13902 USA
| | - Timothy J. White
- School of Materials Science and Engineering Nanyang Technological University Nanyang Avenue Singapore 639798 Republic of Singapore
| | - William A. Goddard
- Materials and Process Simulation Center (MSC) and Joint Center for Artificial Photosynthesis (JCAP) California Institute of Technology Pasadena CA 91125 USA
| | - Zhongwu Wang
- Cornell High Energy Synchrotron Source Cornell University Ithaca NY 14853 USA
| | - Tom Baikie
- Energy Research Institute@NTU (ERI@N) Nanyang Technological University 50 Nanyang Drive Singapore 637553 Republic of Singapore
| | - Jiye Fang
- Materials Science and Engineering Program State University of New York at Binghamton Binghamton NY 13902 USA
- Department of Chemistry State University of New York at Binghamton Binghamton NY 13902 USA
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146
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Zhou Y, You L, Wang S, Ku Z, Fan H, Schmidt D, Rusydi A, Chang L, Wang L, Ren P, Chen L, Yuan G, Chen L, Wang J. Giant photostriction in organic-inorganic lead halide perovskites. Nat Commun 2016; 7:11193. [PMID: 27044485 PMCID: PMC4822042 DOI: 10.1038/ncomms11193] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Accepted: 03/01/2016] [Indexed: 12/23/2022] Open
Abstract
Among the many materials investigated for next-generation photovoltaic cells, organic–inorganic lead halide perovskites have demonstrated great potential thanks to their high power conversion efficiency and solution processability. Within a short period of about 5 years, the efficiency of solar cells based on these materials has increased dramatically from 3.8 to over 20%. Despite the tremendous progress in device performance, much less is known about the underlying photophysics involving charge–orbital–lattice interactions and the role of the organic molecules in this hybrid material remains poorly understood. Here, we report a giant photostrictive response, that is, light-induced lattice change, of >1,200 p.p.m. in methylammonium lead iodide, which could be the key to understand its superior optical properties. The strong photon-lattice coupling also opens up the possibility of employing these materials in wireless opto-mechanical devices. The photophysics of lead halide perovskites is under intense investigation. Here, the authors use force microscopy on single crystals to show that light induces drastic lattice changes, and propose that the weakening of the hydrogen coupling under illumination is responsible for the lattice dilatation.
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Affiliation(s)
- Yang Zhou
- School of Materials Science and Engineering, Nanyang Technological University, Block N4.1-02-24, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Lu You
- School of Materials Science and Engineering, Nanyang Technological University, Block N4.1-02-24, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Shiwei Wang
- School of Materials Science and Engineering, Nanyang Technological University, Block N4.1-02-24, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Zhiliang Ku
- School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 639798, Singapore
| | - Hongjin Fan
- School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 639798, Singapore
| | - Daniel Schmidt
- Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore 117603, Singapore
| | - Andrivo Rusydi
- Singapore Synchrotron Light Source, National University of Singapore, 5 Research Link, Singapore 117603, Singapore
| | - Lei Chang
- School of Materials Science and Engineering, Nanyang Technological University, Block N4.1-02-24, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Le Wang
- School of Materials Science and Engineering, Nanyang Technological University, Block N4.1-02-24, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Peng Ren
- School of Materials Science and Engineering, Nanyang Technological University, Block N4.1-02-24, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Liufang Chen
- Department of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Guoliang Yuan
- Department of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Lang Chen
- Department of Physics, South University of Science and Technology of China, Shenzhen 518055, China
| | - Junling Wang
- School of Materials Science and Engineering, Nanyang Technological University, Block N4.1-02-24, 50 Nanyang Avenue, Singapore 639798, Singapore
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147
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Xiao F, Dong Z, Mao H, Liu J, Sun X, Song Y. Morphology- and lattice stability-dependent performance of nanostructured Li4Ti5O12 probed by in situ high-pressure Raman spectroscopy and synchrotron X-ray diffraction. CrystEngComm 2016. [DOI: 10.1039/c5ce02301g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In situ high-pressure measurements of two different nanostructured Li4Ti5O12 materials revealed important structural origins that influence their electrochemical performance.
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Affiliation(s)
- Fengping Xiao
- Department of Chemistry
- The University of Western Ontario
- London, Canada
| | - Zhaohui Dong
- Shanghai Synchrotron Radiation Facility (SSRF)
- Shanghai Institute of Applied Physics
- CAS
- Shanghai, PR China
| | - Haiyan Mao
- College of Materials Science and Engineering
- Nanjing Forestry University
- Nanjing, PR China
| | - Jian Liu
- Department of Mechanical and Materials Engineering
- The University of Western Ontario
- London, Canada
| | - Xueliang Sun
- Department of Mechanical and Materials Engineering
- The University of Western Ontario
- London, Canada
- Soochow University-Western University Centre for Synchrotron Radiation Research
- The University of Western Ontario
| | - Yang Song
- Department of Chemistry
- The University of Western Ontario
- London, Canada
- Soochow University-Western University Centre for Synchrotron Radiation Research
- The University of Western Ontario
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