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Lee J, Cho JB, Li Y, Lee KH, Jang JI, Ok KM. Multifunctional Chiral d 10-Metal Coordination Polymers: Tunable Photoluminescence and Efficient Second-Harmonic Generation with Circular Dichroic Response. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2309323. [PMID: 38085128 DOI: 10.1002/smll.202309323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 12/04/2023] [Indexed: 05/25/2024]
Abstract
A series of homochiral coordination polymers (HCPs), [M2(SIAP)2(bpy)2] [M(S)] and [M2(RIAP)2(bpy)2] [M(R)] (M = Zn or Cd, SIAP or RIAP = (S,S)- or (R,R)- 2,2'-(isophthaloylbis(azanediyl))di-propionic acid, bpy = 4,4'-bipyridine), is successfully synthesized through solvothermal reactions, self-assembling d10 metal cations, chiral dicarboxylic ligands, and π-conjugated bipyridyl ligands. The HCPs crystallize in the extremely rare triclinic chiral space group, P1, and present 3D framework structures attributed to the strong intermolecular interactions, such as hydrogen bonds and π-π stacking. Due to the unique crystal structures, the title compounds reveal efficient photoluminescence emission across a broad visible range, with significant brightness and color tuning by varying the excitation wavelength. Moreover, they exhibit efficient phase-matched second-harmonic generation (SHG) with very high laser-induced damage thresholds, essential for high-power nonlinear optical (NLO) applications. Intriguingly, the title compounds exhibit a measurable contrast in the SHG response under right- and left-handed circularly polarized excitation, thereby providing a unique case of SHG circular dichroism from the chiral centers of SIAP2- or RIAP2- ligand packed in the noncentrosymmetric environment. These exceptional attributes position these HCPs as promising candidates for multifunctional materials, with potential applications ranging from NLO devices to tailored luminescent systems with polarization control.
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Affiliation(s)
- Jihyun Lee
- Department of Chemistry, Sogang University, Seoul, 04107, Republic of Korea
| | - Jeong Bin Cho
- Department of Physics, Sogang University, Seoul, 04107, Republic of Korea
| | - Yang Li
- Department of Chemistry, Sogang University, Seoul, 04107, Republic of Korea
| | - Kyeong-Hyeon Lee
- Department of Physics, Sogang University, Seoul, 04107, Republic of Korea
| | - Joon Ik Jang
- Department of Physics, Sogang University, Seoul, 04107, Republic of Korea
| | - Kang Min Ok
- Department of Chemistry, Sogang University, Seoul, 04107, Republic of Korea
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2
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Cheng F, Wang P, Xu C, Liao Q, Zhang S, Sun H, Fan W, Liu G, Li Z, Kong Y, Wang L, Li F, Kang Z, Zhang Y. The dynamic surface evolution of halide perovskites induced by external energy stimulation. Natl Sci Rev 2024; 11:nwae042. [PMID: 38487497 PMCID: PMC10939416 DOI: 10.1093/nsr/nwae042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 01/05/2024] [Accepted: 01/29/2024] [Indexed: 03/17/2024] Open
Abstract
Tracking the dynamic surface evolution of metal halide perovskite is crucial for understanding the corresponding fundamental principles of photoelectric properties and intrinsic instability. However, due to the volatility elements and soft lattice nature of perovskites, several important dynamic behaviors remain unclear. Here, an ultra-high vacuum (UHV) interconnection system integrated by surface-sensitive probing techniques has been developed to investigate the freshly cleaved surface of CH3NH3PbBr3 in situ under given energy stimulation. On this basis, the detailed three-step chemical decomposition pathway of perovskites has been clarified. Meanwhile, the evolution of crystal structure from cubic phase to tetragonal phase on the perovskite surface has been revealed under energy stimulation. Accompanied by chemical composition and crystal structure evolution, electronic structure changes including energy level position, hole effective mass, and Rashba splitting have also been accurately determined. These findings provide a clear perspective on the physical origin of optoelectronic properties and the decomposition mechanism of perovskites.
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Affiliation(s)
- Feiyu Cheng
- Academy for Advanced Interdisciplinary Science and Technology, State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
- Beijing Key Laboratory for Advanced Energy Materials and Technologies, Key Laboratory of Advanced Materials and Devices for Post-Moore Chips, Ministry of Education, Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Pengdong Wang
- Vacuum Interconnected Nanotech Workstation (Nano-X), Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Chenzhe Xu
- Academy for Advanced Interdisciplinary Science and Technology, State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
- Beijing Key Laboratory for Advanced Energy Materials and Technologies, Key Laboratory of Advanced Materials and Devices for Post-Moore Chips, Ministry of Education, Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Qingliang Liao
- Academy for Advanced Interdisciplinary Science and Technology, State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
- Beijing Key Laboratory for Advanced Energy Materials and Technologies, Key Laboratory of Advanced Materials and Devices for Post-Moore Chips, Ministry of Education, Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Suicai Zhang
- Academy for Advanced Interdisciplinary Science and Technology, State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
- Beijing Key Laboratory for Advanced Energy Materials and Technologies, Key Laboratory of Advanced Materials and Devices for Post-Moore Chips, Ministry of Education, Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Haochun Sun
- Academy for Advanced Interdisciplinary Science and Technology, State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
- Beijing Key Laboratory for Advanced Energy Materials and Technologies, Key Laboratory of Advanced Materials and Devices for Post-Moore Chips, Ministry of Education, Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Wenqiang Fan
- Academy for Advanced Interdisciplinary Science and Technology, State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
- Beijing Key Laboratory for Advanced Energy Materials and Technologies, Key Laboratory of Advanced Materials and Devices for Post-Moore Chips, Ministry of Education, Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Guodong Liu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhiyun Li
- Vacuum Interconnected Nanotech Workstation (Nano-X), Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Yaping Kong
- Vacuum Interconnected Nanotech Workstation (Nano-X), Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Li Wang
- Vacuum Interconnected Nanotech Workstation (Nano-X), Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Fangsen Li
- Vacuum Interconnected Nanotech Workstation (Nano-X), Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Zhuo Kang
- Academy for Advanced Interdisciplinary Science and Technology, State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
- Beijing Key Laboratory for Advanced Energy Materials and Technologies, Key Laboratory of Advanced Materials and Devices for Post-Moore Chips, Ministry of Education, Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yue Zhang
- Academy for Advanced Interdisciplinary Science and Technology, State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
- Beijing Key Laboratory for Advanced Energy Materials and Technologies, Key Laboratory of Advanced Materials and Devices for Post-Moore Chips, Ministry of Education, Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
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3
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Bulyk LI, Demkiv T, Antonyak O, Chornodolskyy YM, Gamernyk R, Suchocki A, Voloshinovskii A. Pressure influence on excitonic luminescence of CsPbBr 3 perovskite. Dalton Trans 2023; 52:16712-16719. [PMID: 37899671 DOI: 10.1039/d3dt02647g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
This study investigates the effect of hydrostatic pressure on the luminescence properties of CsPbBr3 single crystals at 12 K. The luminescence at the edge of the band gap reveals a structure attributed to free excitons, phonon replica of the free excitons, and Rashba excitons. Changes in the relative intensity of the free and Rashba excitons were observed with increasing pressure, caused by changes in the probability of nonradiative deexcitation. At pressures around 3 GPa, luminescence completely fades away. The red shift of the energy position of the maximum luminescence of free and Rashba excitons in pressure ranges of 0-1.3 GPa is attributed to the length reduction of Pb-Br bonds in [PbBr6]4- octahedra, while the high-energy shift of the Rashba excitons at pressures above 1.3 GPa is due to [PbBr6]4- octahedra rotation and changes in the Pb-Br-Pb angle.
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Affiliation(s)
- Lev-Ivan Bulyk
- Institute of Physics, Polish Academy of Sciences, Lotników 32/46, 02668, Warsaw, Poland.
- Ivan Franko National University of Lviv, 8 Kyryla i Mefodiya St, Lviv, Ukraine
| | - Taras Demkiv
- Ivan Franko National University of Lviv, 8 Kyryla i Mefodiya St, Lviv, Ukraine
| | - Oleh Antonyak
- Ivan Franko National University of Lviv, 8 Kyryla i Mefodiya St, Lviv, Ukraine
| | | | - Roman Gamernyk
- Ivan Franko National University of Lviv, 8 Kyryla i Mefodiya St, Lviv, Ukraine
| | - Andrzej Suchocki
- Institute of Physics, Polish Academy of Sciences, Lotników 32/46, 02668, Warsaw, Poland.
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4
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Chen G, Liu X, An J, Wang S, Zhao X, Gu Z, Yuan C, Xu X, Bao J, Hu HS, Li J, Wang X. Nucleation-mediated growth of chiral 3D organic-inorganic perovskite single crystals. Nat Chem 2023; 15:1581-1590. [PMID: 37550390 DOI: 10.1038/s41557-023-01290-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 07/10/2023] [Indexed: 08/09/2023]
Abstract
Although their zero- to two-dimensional counterparts are well known, three-dimensional chiral hybrid organic-inorganic perovskite single crystals have remained difficult because they contain no chiral components and their crystal phases belong to centrosymmetric achiral point groups. Here we report a general approach to grow single-crystalline 3D lead halide perovskites with chiroptical activity. Taking MAPbBr3 (MA, methylammonium) perovskite as a representative example, whereas achiral MAPbBr3 crystallized from precursors in solution by inverse temperature crystallization method, the addition of micro- or nanoparticles as nucleating agents promoted the formation of chiral crystals under a near equilibrium state. Experimental characterization supported by calculations showed that the chirality of the 3D APbX3 (where A is an ammonium ion and X is Cl, Br or mixed Cl-Br or Br-I) perovskites arises from chiral patterns of the A-site cations and their interaction with the [PbX6]4- octahedra in the perovskite structure. The chiral structure obeys the lowest-energy principle and thereby thermodynamically stable. The chiral 3D hybrid organic-inorganic perovskites served in a circularly polarized light photodetector prototype successfully.
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Affiliation(s)
- Gaoyu Chen
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, China
| | - Xiaoyu Liu
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, China
| | - Jiakun An
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, China
| | - Shibin Wang
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing, China
- Institute of Industrial Catalysis, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, China
| | - Xiaokun Zhao
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing, China
| | - Zhongzheng Gu
- Jiangsu Key Laboratory of Optoelectronic Technology, School of Physics and Technology, Nanjing Normal University, Nanjing, China
| | - Caojin Yuan
- Jiangsu Key Laboratory of Optoelectronic Technology, School of Physics and Technology, Nanjing Normal University, Nanjing, China
| | - Xiangxing Xu
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, China.
| | - Jianchun Bao
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, China
| | - Han-Shi Hu
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing, China.
| | - Jun Li
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing, China
| | - Xun Wang
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing, China.
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5
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de Araujo LO, Rêgo CRC, Wenzel W, Silveira DN, Piotrowski MJ, Sabino FP, Pramudya Y, Guedes-Sobrinho D. How cation nature controls the bandgap and bulk Rashba splitting of halide perovskites. J Comput Chem 2023; 44:1395-1403. [PMID: 36805580 DOI: 10.1002/jcc.27094] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 02/03/2023] [Accepted: 02/08/2023] [Indexed: 02/23/2023]
Abstract
Because of instability issues presented by metal halide perovskites based on methylammonium (MA), its replacement to Cs $$ \mathrm{Cs} $$ has emerged as an alternative to improve the materials' durability. However, the impact of this replacement on electronic properties, especially gap energy and bulk Rashba splitting remains unclear since electrostatic interactions from organic cations can play a crucial role. Through first-principles calculations, we investigated how organic/inorganic cations impact the electronic properties of MAPbI 3 $$ {\mathrm{MAPbI}}_3 $$ and CsPbI 3 $$ {\mathrm{CsPbI}}_3 $$ perovskites. Although at high temperatures the organic cation can assume spherical-like configurations due to its rotation into the cages, our results provide a complete electronic mechanism to show, from a chemical perspective based on ab initio calculations at 0 K $$ 0\ \mathrm{K} $$ , how the MA $$ \mathrm{MA} $$ dipoles suppression can reduce the MAPbI 3 $$ {\mathrm{MAPbI}}_3 $$ gap energy by promoting a degeneracy breaking in the electronic states from the PbI 3 $$ {\mathrm{PbI}}_3 $$ framework, while the dipole moment reinforcement is crucial to align theory ↔ $$ \leftrightarrow $$ experiment, increasing the bulk Rashba splitting through higher Pb $$ \mathrm{Pb} $$ off-centering motifs. The lack of permanent dipole moment in Cs $$ \mathrm{Cs} $$ results in CsPbI 3 $$ {\mathrm{CsPbI}}_3 $$ polymorphs with a pronounced Pb $$ \mathrm{Pb} $$ on-centering-like feature, which causes suppression in their respective bulk Rashba effect.
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Affiliation(s)
| | - Celso R C Rêgo
- Institute of Nanotechnology Hermann-von-Helmholtz-Platz, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - W Wenzel
- Institute of Nanotechnology Hermann-von-Helmholtz-Platz, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Danilo N Silveira
- Department of Chemistry, Federal University of Paraná, Curitiba, Brazil
| | | | - Fernando P Sabino
- Center for Natural and Human Sciences, Federal University of ABC, Santo André, Brazil
| | - Yohanes Pramudya
- Institute of Nanotechnology Hermann-von-Helmholtz-Platz, Karlsruhe Institute of Technology, Karlsruhe, Germany
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6
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Ryu H, Park J, Nam SH, Park JW, Kim K, Yi Y, Jang JI. Observation of 3D Biexcitons in Pristine-Quality CH 3 NH 3 PbBr 3 Single Crystals. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2107882. [PMID: 35040202 DOI: 10.1002/adma.202107882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 01/14/2022] [Indexed: 06/14/2023]
Abstract
Halide perovskites (HPs) are fascinating materials whose optoelectronic properties are arguably excitonic. In the HP family, biexcitons are known to exist only in low dimensions where exciton-exciton binding is strongly enhanced by quantum and dielectric confinements. In this paper, however, it is shown that they indeed do exist in 3D bulk CH3 NH3 PbBr3 (MAPbBr3 ) single crystals if the pristine crystal quality is ensured for subtle binding of two excitons. The existence of biexcitons is clearly evidenced below 30 K with a binding energy of ≈3.9 ± 0.3 meV according to i) exciton-biexciton population dynamics, ii) giant resonant two-photon excitation of biexcitons, iii) inverted Boltzmann-type spectral feature, and iv) zero degree of circular polarization in the biexciton photoluminescence. Because of the polariton effect, the two-photon resonance occurs at the excited biexciton state from which longitudinal-transverse splitting is calculated to be 3.7 meV. The discovery of the 3D biexcitons underscores the very quality of HP crystals for generating various many-body excitonic phases in MAPbBr3 and its analogues toward the improved understanding of their fundamental properties and highly efficient optoelectronic applications.
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Affiliation(s)
- Hongsun Ryu
- Department of Physics, Sogang University, Seoul, 04107, South Korea
| | - Jeehong Park
- Department of Physics, Van der Waals Materials Research Center, Yonsei University, Seoul, 03722, South Korea
| | - Seo Hyun Nam
- Department of Physics, Sogang University, Seoul, 04107, South Korea
| | - Joon Woo Park
- Department of Physics, Van der Waals Materials Research Center, Yonsei University, Seoul, 03722, South Korea
| | - Kitae Kim
- Department of Physics, Van der Waals Materials Research Center, Yonsei University, Seoul, 03722, South Korea
| | - Yeonjin Yi
- Department of Physics, Van der Waals Materials Research Center, Yonsei University, Seoul, 03722, South Korea
| | - Joon I Jang
- Department of Physics, Sogang University, Seoul, 04107, South Korea
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7
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Ray A, Martín-García B, Moliterni A, Casati N, Boopathi KM, Spirito D, Goldoni L, Prato M, Giacobbe C, Giannini C, Di Stasio F, Krahne R, Manna L, Abdelhady AL. Mixed Dimethylammonium/Methylammonium Lead Halide Perovskite Crystals for Improved Structural Stability and Enhanced Photodetection. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2106160. [PMID: 34856033 DOI: 10.1002/adma.202106160] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 11/24/2021] [Indexed: 06/13/2023]
Abstract
The solvent acidolysis crystallization technique is utilized to grow mixed dimethylammonium/methylammonium lead tribromide (DMA/MAPbBr3 ) crystals reaching the highest dimethylammonium incorporation of 44% while maintaining the 3D cubic perovskite phase. These mixed perovskite crystals show suppression of the orthorhombic phase and a lower tetragonal-to-cubic phase-transition temperature compared to MAPbBr3 . A distinct behavior is observed in the temperature-dependent photoluminescence properties of MAPbBr3 and mixed DMA/MAPbBr3 crystals due to the different organic cation dynamics governing the phase transition(s). Furthermore, lateral photodetectors based on these crystals show that, at room temperature, the mixed crystals possess higher detectivity compared to MAPbBr3 crystals caused by structural compression and reduced surface trap density. Remarkably, the mixed-crystal devices exhibit large enhancement in their detectivity below the phase-transition temperature (at 200 K), while for the MAPbBr3 devices only insignificant changes are observed. The high detectivity of the mixed crystals makes them attractive for visible-light communication and for space applications. The results highlight the importance of the synthetic technique for compositional engineering of halide perovskites that governs their structural and optoelectronic properties.
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Affiliation(s)
- Aniruddha Ray
- Istituto Italiano di Tecnologia, Via Morego 30, Genoa, 16163, Italy
- Dipartimento di Chimica e Chimica Industriale, Università degli Studi di Genova, Via Dodecaneso 31, Genoa, 16146, Italy
| | - Beatriz Martín-García
- Istituto Italiano di Tecnologia, Via Morego 30, Genoa, 16163, Italy
- CIC nanoGUNE, Tolosa Hiribidea, 76, Donostia-San Sebastian, 20018, Spain
| | - Anna Moliterni
- Istituto di Cristallografia, Consiglio Nazionale delle Ricerche, Via Amendola 122/O, Bari, 70126, Italy
| | - Nicola Casati
- Laboratory for Synchrotron Radiation-Condensed Matter, Paul Scherrer Institut, Villigen, 5232, Switzerland
| | | | - Davide Spirito
- IHP-Leibniz-Institut für innovative Mikroelektronik, Im Technologiepark 25, Frankfurt (Oder), D-15236, Germany
| | - Luca Goldoni
- Istituto Italiano di Tecnologia, Via Morego 30, Genoa, 16163, Italy
| | - Mirko Prato
- Istituto Italiano di Tecnologia, Via Morego 30, Genoa, 16163, Italy
| | - Carlotta Giacobbe
- European Synchrotron Radiation Facility, 71 Avenue Des Martyrs, Grenoble, 38040, France
| | - Cinzia Giannini
- Istituto di Cristallografia, Consiglio Nazionale delle Ricerche, Via Amendola 122/O, Bari, 70126, Italy
| | | | - Roman Krahne
- Istituto Italiano di Tecnologia, Via Morego 30, Genoa, 16163, Italy
| | - Liberato Manna
- Istituto Italiano di Tecnologia, Via Morego 30, Genoa, 16163, Italy
| | - Ahmed L Abdelhady
- Istituto Italiano di Tecnologia, Via Morego 30, Genoa, 16163, Italy
- ŁUKASIEWICZ Research Network PORT-Polish Center for Technology Development, ul. Stabłowicka 147, Wrocław, 54066, Poland
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8
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9
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Liu S, DeFilippo AR, Balasubramanian M, Liu Z, Wang SG, Chen Y, Chariton S, Prakapenka V, Luo X, Zhao L, Martin JS, Lin Y, Yan Y, Ghose SK, Tyson TA. High-Resolution In-Situ Synchrotron X-Ray Studies of Inorganic Perovskite CsPbBr 3 : New Symmetry Assignments and Structural Phase Transitions. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2003046. [PMID: 34250750 PMCID: PMC8456275 DOI: 10.1002/advs.202003046] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 04/27/2021] [Indexed: 06/13/2023]
Abstract
Perovskite photovoltaic ABX3 systems are being studied due to their high energy-conversion efficiencies with current emphasis placed on pure inorganic systems. In this work, synchrotron single-crystal diffraction measurements combined with second harmonic generation measurements reveal the absence of inversion symmetry below room temperature in CsPbBr3 . Local structural analysis by pair distribution function and X-ray absorption fine structure methods are performed to ascertain the local ordering, atomic pair correlations, and phase evolution in a broad range of temperatures. The currently accepted space group assignments for CsPbBr3 are found to be incorrect in a manner that profoundly impacts physical properties. New assignments are obtained for the bulk structure: I m 3 ¯ (above ≈410 K), P21 /m (between ≈300 K and ≈410 K), and the polar group Pm (below ≈300 K), respectively. The newly observed structural distortions exist in the bulk structure consistent with the expectation of previous photoluminescence and Raman measurements. High-pressure measurements reveal multiple low-pressure phases, one of which exists as a metastable phase at ambient pressure. This work should help guide research in the perovskite photovoltaic community to better control the structure under operational conditions and further improve transport and optical properties.
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Affiliation(s)
- Sizhan Liu
- Department of PhysicsNew Jersey Institute of TechnologyNewarkNJ07102USA
| | | | | | - Zhenxian Liu
- Department of PhysicsUniversity of Illinois at ChicagoChicagoIL60607‐7059USA
| | - SuYin Grass Wang
- Center for Advanced Radiation SourcesUniversity of ChicagoArgonneIL60439USA
| | - Yu‐Sheng Chen
- Center for Advanced Radiation SourcesUniversity of ChicagoArgonneIL60439USA
| | - Stella Chariton
- Center for Advanced Radiation SourcesUniversity of ChicagoArgonneIL60439USA
| | - Vitali Prakapenka
- Center for Advanced Radiation SourcesUniversity of ChicagoArgonneIL60439USA
| | - Xiangpeng Luo
- Department of PhysicsUniversity of MichiganAnn ArborMI48109‐1040USA
| | - Liuyan Zhao
- Department of PhysicsUniversity of MichiganAnn ArborMI48109‐1040USA
| | - Jovan San Martin
- Department of Chemistry and BiochemistrySan Diego State UniversitySan DiegoCA92182USA
| | - Yixiong Lin
- Department of Chemistry and BiochemistrySan Diego State UniversitySan DiegoCA92182USA
| | - Yong Yan
- Department of Chemistry and BiochemistrySan Diego State UniversitySan DiegoCA92182USA
| | - Sanjit K. Ghose
- National Synchrotron Light Source IIBrookhaven National LaboratoryUptonNY11973USA
| | - Trevor A. Tyson
- Department of PhysicsNew Jersey Institute of TechnologyNewarkNJ07102USA
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10
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Ryu H, Byun HR, McCall KM, Park DY, Kim TJ, Jeong MS, Kanatzidis MG, Jang JI. Role of the A-Site Cation in Low-Temperature Optical Behaviors of APbBr 3 (A = Cs, CH 3NH 3). J Am Chem Soc 2021; 143:2340-2347. [PMID: 33502184 DOI: 10.1021/jacs.0c11980] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
APbBr3 (A = Cs, CH3NH3) are prototype halide perovskites having bandgaps of 2.30-2.35 eV at room temperature, rendering their apparent color nearly identical (bright orange but opaque). Upon optical excitation, they emit bright photoluminescence (PL) arising from carrier recombination whose spectral features are also similar. At 10 K, however, the apparent color of CsPbBr3 becomes transparent yellow, whereas that of CH3NH3PbBr3 does not change significantly due to the presence of an indirect Rashba gap. With increasing the excitation level, evolution of the PL spectra, which are excitonic at 10 K, reveals the emergence of P-band emission arising from inelastic exciton-exciton scattering. Based on the spectral location of the P-band, exciton binding energies are determined to be 21.6 ± 2.0 and 38.3 ± 3.0 meV for CsPbBr3 and CH3NH3PbBr3, respectively. Intriguingly, upon further increase in the exciton density, electron-hole plasma appears in CsPbBr3 as evidenced by both red-shift and broadening of the PL. This phase, however, does not occur in CH3NH3PbBr3 presumably due to polaronic effects. Although the A-site cation is believed not to directly impact optical properties of APbBr3, our results underscore its critical role, which destines different high-density phases and apparent color at low temperatures.
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Affiliation(s)
- Hongsun Ryu
- Department of Physics, Sogang University, Seoul 04107, South Korea
| | - Hye Ryung Byun
- Department of Physics, Sogang University, Seoul 04107, South Korea
| | - Kyle M McCall
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Dae Young Park
- Department of Energy Science, Sungkyunkwan University, Suwon 16419, South Korea
| | - Tae Jung Kim
- Department of Physics, Kyung Hee University, Seoul 02447, South Korea
| | - Mun Seok Jeong
- Department of Energy Science, Sungkyunkwan University, Suwon 16419, South Korea
| | - Mercouri G Kanatzidis
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Joon I Jang
- Department of Physics, Sogang University, Seoul 04107, South Korea
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