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Ding J, Liu X, Zhou S, Huang J, Li Y, Gao Y, Dong C, Yue G, Tan F. In-situ free-standing inorganic 2D Cs 2PbI 2Cl 2 nanosheets for efficient self-powered photodetectors with carbon electrode. J Colloid Interface Sci 2024; 654:1356-1364. [PMID: 37918095 DOI: 10.1016/j.jcis.2023.10.126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 10/22/2023] [Accepted: 10/25/2023] [Indexed: 11/04/2023]
Abstract
Inorganic two-dimensional (2D) perovskites possess excellent thermal stability and high charge mobility, making them an attractive choice for stable optoelectronic devices such as photodetectors (PDs). The formation of an appropriate inorganic 2D perovskite structure is of great importance to efficient PDs, especially to that of planar self-powered photovoltaic PDs featuring perpendicular charge transport channels. Herein, we implemented morphological engineering on wide bandgap inorganic 2D perovskite, Cs2PbI2Cl2, demonstrating a successful preparation of in-situ free-standing nanosheets structure with proper charge channels for photovoltaic type self-powered PDs. Compared with its counterpart with a nanoblock morphology, the 2D nanosheet Cs2PbI2Cl2 film exhibits enhanced charge mobility and purified Ruddlesden-Popper phase that can withstand high-energy electron beam radiation, accelerated thermal aging and long-term shelf storage. Sandwiching Cs2PbI2Cl2 nanosheet film in between tin oxide (SnO2) and polythiophene (P3HT) as electron and hole acceptors, respectively, the constructed photovoltaic type structure exhibits effective dissociation of excitons at the cascade type-II interface. The nanosheets enable lower dark current and more efficient charge collection than the nanoblock structure. As a result, the self-powered photodetectors with 2D Cs2PbI2Cl2 nanosheets deliver an outstanding responsivity of 698 mW/cm2 and a detectivity of 8.6×1012 Jones. The stable PDs can be applied to monitor ultraviolet irradiation in real outdoor conditions. Our work demonstrates the significant role of morphology tuning of 2D inorganic perovskite in stable, cost-effective and efficient photodetectors.
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Affiliation(s)
- Jianfeng Ding
- Key Laboratory of Photovoltaic Materials, School of Future Technology, Henan University, Kaifeng 475004, PR China
| | - Xinying Liu
- Key Laboratory of Photovoltaic Materials, School of Future Technology, Henan University, Kaifeng 475004, PR China
| | - Shun Zhou
- Key Laboratory of Photovoltaic Materials, School of Future Technology, Henan University, Kaifeng 475004, PR China
| | - Junyi Huang
- Key Laboratory of Photovoltaic Materials, School of Future Technology, Henan University, Kaifeng 475004, PR China
| | - Yaqing Li
- Key Laboratory of Photovoltaic Materials, School of Future Technology, Henan University, Kaifeng 475004, PR China
| | - Yueyue Gao
- Key Laboratory of Photovoltaic Materials, School of Future Technology, Henan University, Kaifeng 475004, PR China
| | - Chen Dong
- Key Laboratory of Photovoltaic Materials, School of Future Technology, Henan University, Kaifeng 475004, PR China
| | - Gentian Yue
- Key Laboratory of Photovoltaic Materials, School of Future Technology, Henan University, Kaifeng 475004, PR China
| | - Furui Tan
- Key Laboratory of Photovoltaic Materials, School of Future Technology, Henan University, Kaifeng 475004, PR China.
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2
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Bhardwaj A, Kundu K, Sasmal R, Acharyya P, Pradhan J, Kalita S, Agasti SS, Biswas K. 2D nanosheets of layered double perovskites: synthesis, photostable bright orange emission and photoluminescence blinking. Chem Sci 2023; 14:7161-7169. [PMID: 37416708 PMCID: PMC10321497 DOI: 10.1039/d3sc02506c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 06/06/2023] [Indexed: 07/08/2023] Open
Abstract
Lead (Pb)-free layered double perovskites (LDPs) with exciting optical properties and environmental stability have sparked attention in optoelectronics, but their high photoluminescence (PL) quantum yield and understanding of the PL blinking phenomenon at the single particle level are still elusive. Herein, we not only demonstrate a hot-injection route for the synthesis of two-dimensional (2D) ∼2-3 layer thick nanosheets (NSs) of LDP, Cs4CdBi2Cl12 (pristine), and its partially Mn-substituted analogue [i.e., Cs4Cd0.6Mn0.4Bi2Cl12 (Mn-substituted)], but also present a solvent-free mechanochemical synthesis of these samples as bulk powders. Bright and intense orange emission has been perceived for partially Mn-substituted 2D NSs with a relatively high PL quantum yield (PLQY) of ∼21%. The PL and lifetime measurements both at cryogenic (77 K) and room temperatures were employed to understand the de-excitation pathways of charge carriers. With the implementation of super-resolved fluorescence microscopy and time-resolved single particle tracking, we identified the occurrence of metastable non-radiative recombination channels in a single NS. In contrast to the rapid photo-bleaching that resulted in a PL blinking-like nature of the controlled pristine NS, the 2D NS of the Mn-substituted sample displayed negligible photo-bleaching with suppression of PL fluctuation under continuous illumination. The blinking-like nature in pristine NSs appeared due to a dynamic equilibrium flanked by the active and in-active states of metastable non-radiative channels. However, the partial substitution of Mn2+ stabilized the in-active state of the non-radiative channels, which increased the PLQY and suppressed PL fluctuation and photo-bleaching events in Mn-substituted NSs.
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Affiliation(s)
- Aditya Bhardwaj
- New Chemistry Unit and School of Advanced Materials Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur P.O. Bangalore 560064 India
| | - Kaushik Kundu
- New Chemistry Unit and School of Advanced Materials Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur P.O. Bangalore 560064 India
| | - Ranjan Sasmal
- New Chemistry Unit and School of Advanced Materials Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur P.O. Bangalore 560064 India
| | - Paribesh Acharyya
- New Chemistry Unit and School of Advanced Materials Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur P.O. Bangalore 560064 India
| | - Jayita Pradhan
- New Chemistry Unit and School of Advanced Materials Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur P.O. Bangalore 560064 India
| | - Simanta Kalita
- Chemistry and Physics of Materials Unit, JNCASR Jakkur P.O. Bangalore 560064 India
| | - Sarit S Agasti
- New Chemistry Unit and School of Advanced Materials Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur P.O. Bangalore 560064 India
- Chemistry and Physics of Materials Unit, JNCASR Jakkur P.O. Bangalore 560064 India
| | - Kanishka Biswas
- New Chemistry Unit and School of Advanced Materials Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur P.O. Bangalore 560064 India
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3
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Yu W, Li F, Huang T, Li W, Wu T. Go beyond the limit: Rationally designed mixed-dimensional perovskite/semiconductor heterostructures and their applications. Innovation (N Y) 2022; 4:100363. [PMID: 36632191 PMCID: PMC9827388 DOI: 10.1016/j.xinn.2022.100363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 12/18/2022] [Indexed: 12/24/2022] Open
Abstract
Halide perovskite heterojunctions rationally integrate the chemical and physical properties of multi-dimensional perovskites and judiciously chosen semiconductor materials, offering the promise of going beyond the limit of a single component. This emerging platform of materials innovation offers fresh opportunities to tune material properties, discover interesting phenomena, and enable novel applications. In this review, we first discuss the fundamentals of forming heterojunctions with perovskites and a wide range of semiconductors, and then we give an overview of the research progress of halide perovskite heterojunctions in terms of their optical, electrical, and mechanical properties, focusing on how the heterojunction tunes the energy band structure, electrical transport, and charge recombination behaviors. We further outline the progress of perovskite-based heterojunctions in optoelectronics. Finally, the challenges and future research directions for perovskite/semiconductor heterojunctions are discussed.
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Affiliation(s)
- Weili Yu
- GPL Photonics Laboratory, State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China,Corresponding author
| | - Feng Li
- School of Physics, The University of Sydney, Sydney, NSW 2006, Australia,Corresponding author
| | - Tao Huang
- GPL Photonics Laboratory, State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
| | - Wei Li
- GPL Photonics Laboratory, State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
| | - Tom Wu
- School of Materials Science and Engineering, University of New South Wales, Sydney, NSW 2052, Australia,Corresponding author
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4
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Jia J, Wang R, Mu H. Exciton dynamics and photoresponse behavior of the in situannealed CsSnBr 3perovskite films synthesized by thermal evaporation. NANOTECHNOLOGY 2022; 33:345503. [PMID: 35552261 DOI: 10.1088/1361-6528/ac6f11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Accepted: 05/12/2022] [Indexed: 06/15/2023]
Abstract
The CsSnBr3photodetectors are fabricated by thermal evaporation and 75 °Cin situannealing, and the effect ofin situannealing on the morphology, structure, exciton dynamics and photoresponse of thermally evaporated CsSnBr3films are investigated. Especially, temperature dependent steady-state photoluminescence (PL) and transient PL decaying have been analyzed in details for understanding the exciton dynamics. Meanwhile, effect of annealing on the activation energy for trap sites (Ea), exciton binding energy (Eb), activation energy for interfacial trapped carriers (ΔE), trap densities and carriers mobilities are studied and the annealed (A-CsSnBr3) reveals obviously lowerEband trap density together with notably higher carrier mobility than those of the unannealed (UA-CsSnBr3). Temperature dependence of the integrated PL intensity can be ascribed to the combining effect of the exciton dissociation, exciton quenching through trap sites and thermal activation of trapped carriers. The temperature dependent transient PL decaying analysis indicates that the PL decaying mechanism at low and high temperature is totally different from that in intermediate temperature range, in which combing effect of free exciton and localized state exciton decaying prevail. The beneficial effects of thein situannealing on the photoresponse performance of the CsSnBr3films can be demonstrated by the remarkable enhancement of the optimal responsivity (R) afterin situannealing which increases from less than 1 A W-1to 1350 A W-1as well as dramatically improved noise equivalent power, specific detectivityD* and Gain (G).
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Affiliation(s)
- Junlin Jia
- School of Physics, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People's Republic of China
| | - Ruibin Wang
- Instrumental Analysis Center, Shanghai JiaoTong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China
| | - Haichuan Mu
- School of Physics, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People's Republic of China
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5
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Sawahreh A, Binyamin T, Jiang J, Millo O, Goldberg O, Azulay D, Pachter R, Etgar L. Electrical and chemical properties of vacancy-ordered lead free layered double perovskite nanoparticles. NANOSCALE 2022; 14:3487-3495. [PMID: 35171187 DOI: 10.1039/d2nr00565d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In this work we synthesized vacancy-ordered lead-free layered double perovskite (LDP) nanoparticles. This structure consists of two layers of trivalent metal halide octahedra [B(III)X6]3- separated by a layer of divalent metal [B(II)X6]4- (B is a divalent or trivalent metal). The chemical formula of this structure is based on A4B(II)B(III)2X12 where A is Cs, B(III) is Bi, X is Cl and B(II) is a different ratio between Mn2+ and Cd2+. Well-defined colloidal nanoplates of Cs4CdxMn1-xBi2Cl12 were successfully synthesized. These nanoplates show photoluminescence (PL) in the orange to red region that can be tuned by changing the Cd/Mn ratio. High resolution scanning transmission electron microscopy (HR-STEM) and atomic resolution elemental analysis were performed on these lead free LDP nanoplates revealing two different particle compositions that can be controlled by the Cd/Mn ratio. Ultraviolet Photoelectron Spectroscopy (UPS) and scanning tunneling spectroscopy (STS) reveal the band gap structure of these LDP nanoplates. Density functional theory (DFT) calculations show the existence of [MnCl6]4- in-gap states. While the absorption occurs from the valence band maximum (VBM) to the conduction band minimum (CBM), the emission may occur from the CBM to an in-gap band maximum (IGM), which could explain the PL in the orange to red region of these nanoplates. This work provides a detailed picture of the chemical and electronic properties of LDP nanoparticles.
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Affiliation(s)
- Amal Sawahreh
- Institute of Chemistry, Casali Center for Applied Chemistry and the Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel.
| | - Tal Binyamin
- Institute of Chemistry, Casali Center for Applied Chemistry and the Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel.
| | - Jie Jiang
- Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA
| | - Oded Millo
- Racah Institute of Physics, The Hebrew University of Jerusalem and the Center for Nanoscience and Nanotechnology, Jerusalem 91904, Israel
| | - Oren Goldberg
- Racah Institute of Physics, The Hebrew University of Jerusalem and the Center for Nanoscience and Nanotechnology, Jerusalem 91904, Israel
| | - Doron Azulay
- Racah Institute of Physics, The Hebrew University of Jerusalem and the Center for Nanoscience and Nanotechnology, Jerusalem 91904, Israel
| | - Ruth Pachter
- Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio 45433, USA
| | - Lioz Etgar
- Institute of Chemistry, Casali Center for Applied Chemistry and the Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel.
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6
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Gull S, Jamil MH, Zhang X, Kwok HS, Li G. Stokes Shift in Inorganic Lead Halide Perovskites: Current Status and Perspective. Chemistry 2022; 11:e202100285. [PMID: 35147296 PMCID: PMC8889505 DOI: 10.1002/open.202100285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 12/18/2021] [Indexed: 11/08/2022]
Abstract
Inorganic metal halide perovskite system is considered as a promising candidate for applications from display to biomedical industry. Intrinsic inorganic lead halides possess small Stokes shift or self-absorption, providing negative impact for both photo voltaic and biomedical applications. Therefore, the development of an inorganic halide perovskite system with large Stokes shift is a significant venture. This review aims to provide an updated survey of the Stokes shift phenomena in the inorganic lead halide perovskites. The first section focuses about the mechanism, the second section gives different approaches in preparing inorganic perovskites with distinct Stokes shift, while the third section highlights the potential applications in both photovoltaic and biomedical areas. This review provides deep insight about the importance and usefulness of such phenomena in inorganic lead halides, essential for various applications.
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Affiliation(s)
- Sehrish Gull
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - M Haris Jamil
- College of Electronics and Electrical Engineering, Shenzhen University, Shenzhen, China
| | - Xiuwen Zhang
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - Hoi-Sing Kwok
- State Key Lab of Advanced Displays and Optoelectronics Technologies, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Guijun Li
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China
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7
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Chen C, Morgan EE, Liu Y, Chen J, Seshadri R, Mao L. “Breathing” organic cation to stabilize multiple structures in low-dimensional Ge-, Sn-, and Pb-based hybrid iodide perovskites. Inorg Chem Front 2022. [DOI: 10.1039/d2qi01247b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
By using S-(2-aminoethyl)isothiouronium (ETU) as the templating cation, five new metal iodide hybrids, (ETU)GeI4, (ETU)4Ge5I18, (ETU)PbI4 and (ETU)3Pb2I10 are reported with varied C–S–C angles in the organic cation.
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Affiliation(s)
- Congcong Chen
- Department of Chemistry, Southern University of Science and Technology Shenzhen, Guangdong 518055, China
| | - Emily E. Morgan
- Materials Research Laboratory and Materials Department, University of California, Santa Barbara, California 93106, USA
| | - Yang Liu
- Department of Chemistry, Southern University of Science and Technology Shenzhen, Guangdong 518055, China
| | - Jian Chen
- Department of Chemistry, Southern University of Science and Technology Shenzhen, Guangdong 518055, China
| | - Ram Seshadri
- Materials Research Laboratory and Materials Department, University of California, Santa Barbara, California 93106, USA
| | - Lingling Mao
- Department of Chemistry, Southern University of Science and Technology Shenzhen, Guangdong 518055, China
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8
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Torma AJ, Li W, Zhang H, Tu Q, Klepov VV, Brennan MC, McCleese CL, Krzyaniak MD, Wasielewski MR, Katan C, Even J, Holt MV, Grusenmeyer TA, Jiang J, Pachter R, Kanatzidis MG, Blancon JC, Mohite AD. Interstitial Nature of Mn 2+ Doping in 2D Perovskites. ACS NANO 2021; 15:20550-20561. [PMID: 34882393 DOI: 10.1021/acsnano.1c09142] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Halide perovskites doped with magnetic impurities (such as the transition metals Mn2+, Co2+, Ni2+) are being explored for a wide range of applications beyond photovoltaics, such as spintronic devices, stable light-emitting diodes, single-photon emitters, and magneto-optical devices. However, despite several recent studies, there is no consensus on whether the doped magnetic ions will predominantly replace the octahedral B-site metal via substitution or reside at interstitial defect sites. Here, by performing correlated nanoscale X-ray microscopy, spatially and temporally resolved photoluminescence measurements, and magnetic force microscopy on the inorganic 2D perovskite Cs2PbI2Cl2, we show that doping Mn2+ into the structure results in a lattice expansion. The observed lattice expansion contrasts with the predicted contraction expected to arise from the B-site metal substitution, thus implying that Mn2+ does not replace the Pb2+ sites. Photoluminescence and electron paramagnetic resonance measurements confirm the presence of Mn2+ in the lattice, while correlated nano-XRD and X-ray fluorescence track the local strain and chemical composition. Density functional theory calculations predict that Mn2+ atoms reside at the interstitial sites between two octahedra in the triangle formed by one Cl- and two I- atoms, which results in a locally expanded structure. These measurements show the fate of the transition metal dopants, the local structure, and optical emission when they are doped at dilute concentrations into a wide band gap semiconductor.
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Affiliation(s)
- Andrew J Torma
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
- Applied Physics Program, Smalley-Curl Institute, Rice University, Houston, Texas 77005, United States
| | - Wenbin Li
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
- Applied Physics Program, Smalley-Curl Institute, Rice University, Houston, Texas 77005, United States
| | - Hao Zhang
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
- Applied Physics Program, Smalley-Curl Institute, Rice University, Houston, Texas 77005, United States
| | - Qing Tu
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Vladislav V Klepov
- Department of Chemistry and Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Michael C Brennan
- Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Christopher L McCleese
- Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
- General Dynamics Information Technology, 5000 Springfield Pike, Dayton, Ohio 45431, United States
| | - Matthew D Krzyaniak
- Department of Chemistry and Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Michael R Wasielewski
- Department of Chemistry and Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, Illinois 60208-3113, United States
| | - Claudine Katan
- Univ Rennes, ENSCR, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226, F-35000 Rennes, France
| | - Jacky Even
- Univ Rennes, INSA Rennes, CNRS, Institut FOTON-UMR 6082, F-35000 Rennes, France
| | - Martin V Holt
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Tod A Grusenmeyer
- Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Jie Jiang
- Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Ruth Pachter
- Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Dayton, Ohio 45433, United States
| | - Mercouri G Kanatzidis
- Department of Chemistry and Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Jean-Christophe Blancon
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
| | - Aditya D Mohite
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
- Applied Physics Program, Smalley-Curl Institute, Rice University, Houston, Texas 77005, United States
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9
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Yadav P, Yadav S, Atri S, Tomar R. A Brief Review on Key Role of Perovskite Oxides as Catalyst. ChemistrySelect 2021. [DOI: 10.1002/slct.202102292] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Pinky Yadav
- Department of Chemistry Faculty of Science SGT University Gurugram Haryana 122505 India
| | - Sangeeta Yadav
- Department of Chemistry Faculty of Science SGT University Gurugram Haryana 122505 India
| | - Shalu Atri
- Department of Chemistry Faculty of Science SGT University Gurugram Haryana 122505 India
| | - Ravi Tomar
- Department of Chemistry Faculty of Science SGT University Gurugram Haryana 122505 India
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10
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Lost horses on the frontier: K2BiCl5 and K3Bi2Br9. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Gale JD, LeBlanc LM, Spackman PR, Silvestri A, Raiteri P. A Universal Force Field for Materials, Periodic GFN-FF: Implementation and Examination. J Chem Theory Comput 2021; 17:7827-7849. [PMID: 34735764 DOI: 10.1021/acs.jctc.1c00832] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
In this study, the adaption of the recently published molecular GFN-FF for periodic boundary conditions (pGFN-FF) is described through the use of neighbor lists combined with appropriate charge sums to handle any dimensionality from 1D polymers to 2D surfaces and 3D solids. Numerical integration over the Brillouin zone for the calculation of π bond orders of periodic fragments is also included. Aside from adapting the GFN-FF method to handle periodicity, improvements to the method are proposed in regard to the calculation of topological charges through the inclusion of a screened Coulomb term that leads to more physical charges and avoids a number of pathological cases. Short-range damping of three-body dispersion is also included to avoid collapse of some structures. Analytic second derivatives are also formulated with respect to both Cartesian and strain variables, including prescreening of terms to accelerate the dispersion/coordination number contribution to the Hessian. The modified pGFN-FF scheme is then applied to a wide range of different materials in order to examine how well this universal model performs.
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Affiliation(s)
- Julian D Gale
- Curtin Institute for Computation, School of Molecular and Life Sciences, Curtin University, PO Box U1987, Perth, Western Australia 6845, Australia
| | - Luc M LeBlanc
- Curtin Institute for Computation, School of Molecular and Life Sciences, Curtin University, PO Box U1987, Perth, Western Australia 6845, Australia
| | - Peter R Spackman
- Curtin Institute for Computation, School of Molecular and Life Sciences, Curtin University, PO Box U1987, Perth, Western Australia 6845, Australia
| | - Alessandro Silvestri
- Curtin Institute for Computation, School of Molecular and Life Sciences, Curtin University, PO Box U1987, Perth, Western Australia 6845, Australia
| | - Paolo Raiteri
- Curtin Institute for Computation, School of Molecular and Life Sciences, Curtin University, PO Box U1987, Perth, Western Australia 6845, Australia
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12
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Recent progress on the modifications of ultra-small perovskite nanomaterials for sensing applications. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116432] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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13
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Ghimire S, Klinke C. Two-dimensional halide perovskites: synthesis, optoelectronic properties, stability, and applications. NANOSCALE 2021; 13:12394-12422. [PMID: 34240087 DOI: 10.1039/d1nr02769g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Halide perovskites are promising materials for light-emitting and light-harvesting applications. In this context, two-dimensional perovskites such as nanoplatelets or Ruddlesden-Popper and Dion-Jacobson layered structures are important because of their structural flexibility, electronic confinement, and better stability. This review article brings forth an extensive overview of the recent developments of two-dimensional halide perovskites both in the colloidal and non-colloidal forms. We outline the strategy to synthesize and control the shape and discuss different crystalline phases and optoelectronic properties. We review the applications of two-dimensional perovskites in solar cells, light-emitting diodes, lasers, photodetectors, and photocatalysis. Besides, we also emphasize the moisture, thermal, and photostability of these materials in comparison to their three-dimensional analogs.
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Affiliation(s)
- Sushant Ghimire
- Institute of Physics, University of Rostock, 18059 Rostock, Germany.
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14
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De Giorgi ML, Cretì A, La-Placa MG, Boix PP, Bolink HJ, Lomascolo M, Anni M. Amplified spontaneous emission in thin films of quasi-2D BA 3MA 3Pb 5Br 16 lead halide perovskites. NANOSCALE 2021; 13:8893-8900. [PMID: 33949433 DOI: 10.1039/d0nr08799h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Quasi-2D (two-dimensional) hybrid perovskites are emerging as a new class of materials with high photoluminescence yield and improved stability compared to their three-dimensional (3D) counterparts. Nevertheless, despite their outstanding emission properties, few studies have been reported on amplified spontaneous emission (ASE) and a thorough understanding of the photophysics of these layered materials is still lacking. In this work, we investigate the ASE properties of multilayered quasi-2D BA3MA3Pb5Br16 films through the dependence of the photoluminescence on temperature and provide a novel insight into the emission processes of quasi-2D lead bromide perovskites. We demonstrate that the PL and ASE properties are strongly affected by the presence, above 190 K, of a minor fraction of the high temperature (HT) phase. This phase dominates the PL spectra at low excitation density and strongly affects the ASE properties. In particular, ASE is only present between 13 K and 230 K, and, at higher temperatures, it is suppressed by absorption of charge transfer states of the HT phase. Our results improve the understanding of the difficulties to obtain ASE at room temperature from these quasi-2D materials and are expected to guide possible materials improvement in order to exploit their excellent emission properties also for the realization of low threshold optically pumped lasers.
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Affiliation(s)
- Maria Luisa De Giorgi
- Dipartimento di Matematica e Fisica "Ennio De Giorgi", Universitá del Salento, Via per Arnesano, 73100 Lecce, Italy.
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