51
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Qaid SMH, Ghaithan HM, Al-Asbahi BA, Aldwayyan AS. Single-Source Thermal Evaporation Growth and the Tuning Surface Passivation Layer Thickness Effect in Enhanced Amplified Spontaneous Emission Properties of CsPb(Br 0.5Cl 0.5) 3 Perovskite Films. Polymers (Basel) 2020; 12:polym12122953. [PMID: 33322038 PMCID: PMC7764332 DOI: 10.3390/polym12122953] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 12/06/2020] [Accepted: 12/09/2020] [Indexed: 11/16/2022] Open
Abstract
High-quality inorganic cesium lead halide perovskite CsPb(Br0.5Cl0.5)3 thin films were successfully achieved through evaporation of the precursors and deposition sequentially by a single-source thermal evaporation system. The different melting points of the precursors were enabled us to evaporate precursors one by one in one trip. The resulting films through its fabrication were smooth and pinhole-free. Furthermore, this technique enabled complete surface coverage by high-quality perovskite crystallization and more moisture stability oppositely of that produce by solution-processed. Then the perovskite films were encapsulated by evaporated a polymethyl methacrylate (PMMA) polymer as a specialized surface passivation approach with various thicknesses. The blue emission, high photoluminescence quantum yield (PLQY), stable, and low threshold of amplified spontaneous emission (ASE) properties of CsPb(Br0.5Cl0.5)3 films in the bulk structure at room temperature were achieved. The effects of the surface-passivation layer and its thickness on the optical response were examined. Detailed analysis of the dependence of ASE properties on the surface passivation layer thickness was performed, and it was determined this achieves performance optimization. The ASE characteristics of bare perovskite thin film were influenced by the incorporation of the PMMA with various thicknesses. The improvement to the surface layer of perovskite thin films compared to that of the bare perovskite thin film was attributed to the combination of thermal evaporation deposition and surface encapsulation. The best results were achieved when using a low PMMA thickness up to 100 nm and reducing the ASE threshold by ~11 μJ/cm2 when compared with free-encapsulation and by ~13 μJ/cm2 when encapsulation occurs at 200 nm or thicker. Compared to the bare CsPb(Br0.5Cl0.5)3, ASE reduced 1.1 times when the PMMA thickness was 100 nm.
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Affiliation(s)
- Saif M. H. Qaid
- Physics and Astronomy Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (B.A.A.-A.); (A.S.A.)
- Department of Physics, Faculty of Science, Ibb University, Ibb 70270, Yemen
- Correspondence: (S.M.H.Q.); (H.M.G.)
| | - Hamid M. Ghaithan
- Physics and Astronomy Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (B.A.A.-A.); (A.S.A.)
- Correspondence: (S.M.H.Q.); (H.M.G.)
| | - Bandar Ali Al-Asbahi
- Physics and Astronomy Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (B.A.A.-A.); (A.S.A.)
- Department of Physics, Faculty of Science, Sana’a University, Sana’a 12544, Yemen
| | - Abdullah S. Aldwayyan
- Physics and Astronomy Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (B.A.A.-A.); (A.S.A.)
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451, Saudi Arabia
- K.A. CARE Energy Research and Innovation Center at Riyadh, Riyadh 11451, Saudi Arabia
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52
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Ultra-Stable Polycrystalline CsPbBr 3 Perovskite-Polymer Composite Thin Disk for Light-Emitting Applications. NANOMATERIALS 2020; 10:nano10122382. [PMID: 33260437 PMCID: PMC7759973 DOI: 10.3390/nano10122382] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 11/24/2020] [Accepted: 11/27/2020] [Indexed: 02/06/2023]
Abstract
Organic–inorganic halide organometal perovskites have demonstrated very promising performance in optoelectronic applications, but their relatively poor chemical and colloidal stability hampers the further improvement of devices based on these materials. Perovskite material engineering is crucial for achieving high photoluminescence quantum yields (PLQYs) and long stability. Herein, these goals are attained by incorporating bulk-structure CsPbBr3, which prevents colloidal degradation, into polymethyl methacrylate (PMMA) polymer in thin-disk form. This technology can potentially realize future disk lasers with no optical and structural contributions from the polymer. The polycrystalline CsPbBr3 perovskite particles were simply obtained by using a mechanical processing technique. The CsPbBr3 was then incorporated into the PMMA polymer using a solution blending method. The polymer enhanced the PLQYs by removing the surface trap states and increasing the water resistance and stability under ambient conditions. In our experimental investigation, the CsPbBr3/PMMA composites were extraordinarily stable and remained strongly luminescent after water immersion for three months and air exposure for over one year, maintaining 80% of their initial photoluminescence intensity. The CsPbBr3/PMMA thin disk produced amplified spontaneous emission for a long time in air and for more than two weeks in water.
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53
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Marçal LB, Oksenberg E, Dzhigaev D, Hammarberg S, Rothman A, Björling A, Unger E, Mikkelsen A, Joselevich E, Wallentin J. In Situ Imaging of Ferroelastic Domain Dynamics in CsPbBr 3 Perovskite Nanowires by Nanofocused Scanning X-ray Diffraction. ACS NANO 2020; 14:15973-15982. [PMID: 33074668 PMCID: PMC7690043 DOI: 10.1021/acsnano.0c07426] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 10/12/2020] [Indexed: 05/25/2023]
Abstract
The interest in metal halide perovskites has grown as impressive results have been shown in solar cells, light emitting devices, and scintillators, but this class of materials have a complex crystal structure that is only partially understood. In particular, the dynamics of the nanoscale ferroelastic domains in metal halide perovskites remains difficult to study. An ideal in situ imaging method for ferroelastic domains requires a challenging combination of high spatial resolution and long penetration depth. Here, we demonstrate in situ temperature-dependent imaging of ferroelastic domains in a single nanowire of metal halide perovskite, CsPbBr3. Scanning X-ray diffraction with a 60 nm beam was used to retrieve local structural properties for temperatures up to 140 °C. We observed a single Bragg peak at room temperature, but at 80 °C, four new Bragg peaks appeared, originating in different real-space domains. The domains were arranged in periodic stripes in the center and with a hatched pattern close to the edges. Reciprocal space mapping at 80 °C was used to quantify the local strain and lattice tilts, revealing the ferroelastic nature of the domains. The domains display a partial stability to further temperature changes. Our results show the dynamics of nanoscale ferroelastic domain formation within a single-crystal perovskite nanostructure, which is important both for the fundamental understanding of these materials and for the development of perovskite-based devices.
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Affiliation(s)
- Lucas
A. B. Marçal
- Synchrotron
Radiation Research and NanoLund, Lund University, Box 118, 22100 Lund, Sweden
| | - Eitan Oksenberg
- Center
for Nanophotonics, AMOLF, 1098 XG Amsterdam, Netherlands
- Department
of Materials and Interfaces, Weizmann Institute
of Science, Rehovot 76100, Israel
| | - Dmitry Dzhigaev
- Synchrotron
Radiation Research and NanoLund, Lund University, Box 118, 22100 Lund, Sweden
| | - Susanna Hammarberg
- Synchrotron
Radiation Research and NanoLund, Lund University, Box 118, 22100 Lund, Sweden
| | - Amnon Rothman
- Department
of Materials and Interfaces, Weizmann Institute
of Science, Rehovot 76100, Israel
| | | | - Eva Unger
- Helmholtz-Zentrum
Berlin für Materialien und Energie GmbH, Young Investigator Group Hybrid Materials Formation and Scaling, Kekuléstraße 5, 12489 Berlin, Germany
- Division
of Chemical Physics and NanoLund, Lund University, PO Box 124, 22100 Lund, Sweden
| | - Anders Mikkelsen
- Synchrotron
Radiation Research and NanoLund, Lund University, Box 118, 22100 Lund, Sweden
| | - Ernesto Joselevich
- Department
of Materials and Interfaces, Weizmann Institute
of Science, Rehovot 76100, Israel
| | - Jesper Wallentin
- Synchrotron
Radiation Research and NanoLund, Lund University, Box 118, 22100 Lund, Sweden
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54
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Ghaithan HM, Alahmed ZA, Qaid SMH, Aldwayyan AS. Structural, Electronic, and Optical Properties of CsPb(Br 1-xCl x) 3 Perovskite: First-Principles Study with PBE-GGA and mBJ-GGA Methods. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E4944. [PMID: 33153239 PMCID: PMC7662594 DOI: 10.3390/ma13214944] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 10/27/2020] [Accepted: 10/29/2020] [Indexed: 11/16/2022]
Abstract
The effect of halide composition on the structural, electronic, and optical properties of CsPb(Br1-xClx)3 perovskite was investigated in this study. When the chloride (Cl) content of x was increased, the unit cell volume decreased with a linear function. Theoretical X-ray diffraction analyses showed that the peak (at 2θ = 30.4°) shifts to a larger angle (at 2θ = 31.9°) when the average fraction of the incorporated Cl increased. The energy bandgap (Eg) was observed to increase with the increase in Cl concentration. For x = 0.00, 0.25, 0.33, 0.50, 0.66, 0.75, and 1.00, the Eg values calculated using the Perdew-Burke-Ernzerhof potential were between 1.53 and 1.93 eV, while those calculated using the modified Becke-Johnson generalized gradient approximation (mBJ-GGA) potential were between 2.23 and 2.90 eV. The Eg calculated using the mBJ-GGA method best matched the experimental values reported. The effective masses decreased with a concentration increase of Cl to 0.33 and then increased with a further increase in the concentration of Cl. Calculated photoabsorption coefficients show a blue shift of absorption at higher Cl content. The calculations indicate that CsPb(Br1-xClx)3 perovskite could be used in optical and optoelectronic devices by partly replacing bromide with chloride.
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Affiliation(s)
- Hamid M. Ghaithan
- Physics and Astronomy Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia;
| | - Zeyad. A. Alahmed
- Physics and Astronomy Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia;
| | - Saif M. H. Qaid
- Physics and Astronomy Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia;
| | - Abdullah S. Aldwayyan
- Physics and Astronomy Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia;
- King Abdullah Institute for Nanotechnology, King Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia
- K.A.CARE Energy Research and Innovation Center at Riyadh, P.O. Box 2022, Riyadh 11454, Saudi Arabia
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55
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Zhao H, Liu X, Xu J, Li Z, Fu Y, Zhu H, Yan L, Liu Z, Liu SF, Yao J. Improvement of Colloidal Characteristics in a Precursor Solution by a PbI 2-(DMSO) 2 Complex for Efficient Nonstoichiometrically Prepared CsPbI 2.8Br 0.2 Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2020; 12:48756-48764. [PMID: 33073978 DOI: 10.1021/acsami.0c11994] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The optoelectronic properties of all-inorganic perovskite solar cells are greatly affected by the quality characteristics of films, such as the defect concentration, crystal growth orientation, crystallinity, and morphology. In this study, a PbI2-(DMSO)2 complex is adopted to partially replace PbI2 as the lead source in the preparation of perovskite precursor solutions. Due to the rapid dispersion of the PbI2-(DMSO)2 complex in a solvent, raw materials can rapidly react to form perovskite colloids with a narrow size distribution. Such uniform colloidal particles are found to be beneficial for achieving films with improved quality and highly orientated growth along the [001] direction. The optimized film exhibits a clearly improved crystallinity and a decrease in defect concentration from 4.29 × 1015 cm-3 to 3.20 × 1015 cm-3. The device based on the obtained all-inorganic CsPbI2.8Br0.2 perovskite finally achieves an increase in photovoltaic power conversion efficiency from 10.5 to 14.15%. In addition, the environmental stability of the device also benefits from the improved film quality. After 480 h of storage in air, the device can still maintain nearly 80% of its initial performance.
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Affiliation(s)
- Hang Zhao
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
- Beijing Key Laboratory of Energy Safety and Clean Utilization, North China Electric Power University, Beijing 102206, China
| | - Xiaolong Liu
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
- Beijing Key Laboratory of Energy Safety and Clean Utilization, North China Electric Power University, Beijing 102206, China
| | - Jia Xu
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
- Beijing Key Laboratory of Energy Safety and Clean Utilization, North China Electric Power University, Beijing 102206, China
| | - Zhenzhen Li
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
- Beijing Key Laboratory of Energy Safety and Clean Utilization, North China Electric Power University, Beijing 102206, China
| | - Yao Fu
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
- Beijing Key Laboratory of Energy Safety and Clean Utilization, North China Electric Power University, Beijing 102206, China
| | - Honglu Zhu
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
- Beijing Key Laboratory of Energy Safety and Clean Utilization, North China Electric Power University, Beijing 102206, China
| | - Luxin Yan
- Beijing Key Laboratory of Energy Safety and Clean Utilization, North China Electric Power University, Beijing 102206, China
- Wuwei Occupational College, Wuwei 733000, China
| | - Zhike Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, Shaanxi Normal University, Xi'an 710119, China
| | - Shengzhong Frank Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, Shaanxi Normal University, Xi'an 710119, China
| | - Jianxi Yao
- State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
- Beijing Key Laboratory of Energy Safety and Clean Utilization, North China Electric Power University, Beijing 102206, China
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56
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Harvey SM, Houck DW, Kirschner MS, Flanders NC, Brumberg A, Leonard AA, Watkins NE, Chen LX, Dichtel WR, Zhang X, Korgel BA, Wasielewski MR, Schaller RD. Transient Lattice Response upon Photoexcitation in CuInSe 2 Nanocrystals with Organic or Inorganic Surface Passivation. ACS NANO 2020; 14:13548-13556. [PMID: 32915540 DOI: 10.1021/acsnano.0c05553] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
CuInSe2 nanocrystals offer promise for optoelectronics including thin-film photovoltaics and printed electronics. Additive manufacturing methods such as photonic curing controllably sinter particles into quasi-continuous films and offer improved device performance. To gain understanding of nanocrystal response under such processing conditions, we investigate impacts of photoexcitation on colloidal nanocrystal lattices via time-resolved X-ray diffraction. We probe three sizes of particles and two capping ligands (oleylamine and inorganic S2-) to evaluate resultant crystal lattice temperature, phase stability, and thermal dissipation. Elevated fluences produce heating and loss of crystallinity, the onset of which exhibits particle size dependence. We find size-dependent recrystallization and cooling lifetimes ranging from 90 to 200 ps with additional slower cooling on the nanosecond time scale. Sulfide-capped nanocrystals show faster recrystallization and cooling compared to oleylamine-capped nanocrystals. Using these lifetimes, we find interfacial thermal conductivities from 3 to 28 MW/(m2 K), demonstrating that ligand identity strongly influences thermal dissipation.
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Affiliation(s)
- Samantha M Harvey
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, Illinois 60208, United States
| | - Daniel W Houck
- McKetta Department of Chemical Engineering, Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Matthew S Kirschner
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Nathan C Flanders
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Alexandra Brumberg
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Ariel A Leonard
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- Chemical Science and Engineering, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Nicolas E Watkins
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Lin X Chen
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- Chemical Science and Engineering, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - William R Dichtel
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Xiaoyi Zhang
- X-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Brian A Korgel
- McKetta Department of Chemical Engineering, Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Michael R Wasielewski
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, Illinois 60208, United States
| | - Richard D Schaller
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- Institute for Sustainability and Energy at Northwestern, Northwestern University, Evanston, Illinois 60208, United States
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, United States
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57
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Yi J, Ge X, Liu E, Cai T, Zhao C, Wen S, Sanabria H, Chen O, Rao AM, Gao J. The correlation between phase transition and photoluminescence properties of CsPbX 3 (X= Cl, Br, I) perovskite nanocrystals. NANOSCALE ADVANCES 2020; 2:4390-4394. [PMID: 34291189 PMCID: PMC8290899 DOI: 10.1039/d0na00545b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 07/05/2020] [Indexed: 05/30/2023]
Abstract
We report a correlation between the structural phase transition of CsPbX3 (X=Cl, Br, I) nanocrystals (NCs) and their temperature dependent steady-state photoluminescence (PL) and time-resolved PL (TRPL). In constrast to CsPbBr3 and CsPbI3 NCs which exhibited a continuous blue shift in their bandgap with increasing temperature, the CsPbCl3 exhibited a blue shift until ~193 K, followed by a red shift until room temperature. We attribute this change from a blue to a red shift to a structural phase transtion in CsPbCl3, which also manifested in the temperature dependent TRPL. Notably, the exciton recombination lifetimes showed a similar reverse trend due to the phase transition in CsPbCl3, which has not been reported previously.
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Affiliation(s)
- Jun Yi
- Department of Physics and Astronomy, Clemson Nanomaterials Institute, Clemson UniversityClemsonSC 29634USA
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan UniversityChangsha 410082China
| | - Xueying Ge
- Department of Physics and Astronomy, Clemson Nanomaterials Institute, Clemson UniversityClemsonSC 29634USA
| | - Exian Liu
- Department of Physics and Astronomy, Clemson Nanomaterials Institute, Clemson UniversityClemsonSC 29634USA
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan UniversityChangsha 410082China
| | - Tong Cai
- Department of Chemistry, Brown UniversityProvidenceRI 02912USA
| | - Chujun Zhao
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan UniversityChangsha 410082China
| | - Shuangchun Wen
- Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan UniversityChangsha 410082China
| | - Hugo Sanabria
- Department of Physics and Astronomy, Clemson Nanomaterials Institute, Clemson UniversityClemsonSC 29634USA
| | - Ou Chen
- Department of Chemistry, Brown UniversityProvidenceRI 02912USA
| | - Apparao M. Rao
- Department of Physics and Astronomy, Clemson Nanomaterials Institute, Clemson UniversityClemsonSC 29634USA
| | - Jianbo Gao
- Department of Physics and Astronomy, Clemson Nanomaterials Institute, Clemson UniversityClemsonSC 29634USA
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58
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Li H, Liu X, Ying Q, Wang C, Jia W, Xing X, Yin L, Lu Z, Zhang K, Pan Y, Shi Z, Huang L, Jia D. Self‐Assembly of Perovskite CsPbBr
3
Quantum Dots Driven by a Photo‐Induced Alkynyl Homocoupling Reaction. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004947] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Hongbo Li
- Institute of Advanced Materials (IAM) Nanjing Tech University 30 South Puzhu Road Nanjing Jiangsu 211816 China
| | - Xiangdong Liu
- Institute of Advanced Materials (IAM) Nanjing Tech University 30 South Puzhu Road Nanjing Jiangsu 211816 China
| | - Qifei Ying
- Institute of Advanced Materials (IAM) Nanjing Tech University 30 South Puzhu Road Nanjing Jiangsu 211816 China
| | - Chao Wang
- College of Engineering and Applied Sciences State Key Laboratory of Analytical Chemistry for Life Science Jiangsu Key Laboratory of Artificial Functional Materials Nanjing University Nanjing Jiangsu 211816 China
| | - Wei Jia
- Laboratory of Energy Materials Chemistry Ministry of Education Key Laboratory of Advanced Functional Materials Autonomous Region Institute of Applied Chemistry Xinjiang University Urumqi Xinjiang 830046 China
| | - Xing Xing
- College of Engineering and Applied Sciences State Key Laboratory of Analytical Chemistry for Life Science Jiangsu Key Laboratory of Artificial Functional Materials Nanjing University Nanjing Jiangsu 211816 China
| | - Lisha Yin
- Institute of Advanced Materials (IAM) Nanjing Tech University 30 South Puzhu Road Nanjing Jiangsu 211816 China
| | - Zhenda Lu
- College of Engineering and Applied Sciences State Key Laboratory of Analytical Chemistry for Life Science Jiangsu Key Laboratory of Artificial Functional Materials Nanjing University Nanjing Jiangsu 211816 China
| | - Kun Zhang
- Institute of Advanced Materials (IAM) Nanjing Tech University 30 South Puzhu Road Nanjing Jiangsu 211816 China
| | - Yue Pan
- Institute of Advanced Materials (IAM) Nanjing Tech University 30 South Puzhu Road Nanjing Jiangsu 211816 China
| | - Zhan Shi
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Ling Huang
- Institute of Advanced Materials (IAM) Nanjing Tech University 30 South Puzhu Road Nanjing Jiangsu 211816 China
| | - Dianzeng Jia
- Laboratory of Energy Materials Chemistry Ministry of Education Key Laboratory of Advanced Functional Materials Autonomous Region Institute of Applied Chemistry Xinjiang University Urumqi Xinjiang 830046 China
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59
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Li H, Liu X, Ying Q, Wang C, Jia W, Xing X, Yin L, Lu Z, Zhang K, Pan Y, Shi Z, Huang L, Jia D. Self-Assembly of Perovskite CsPbBr 3 Quantum Dots Driven by a Photo-Induced Alkynyl Homocoupling Reaction. Angew Chem Int Ed Engl 2020; 59:17207-17213. [PMID: 32578927 DOI: 10.1002/anie.202004947] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 06/04/2020] [Indexed: 12/29/2022]
Abstract
Herein, we report the facile growth of three-dimensional CsPbBr3 perovskite supercrystals (PSCs) self-assembled from individual CsPbBr3 perovskite quantum dots (PQDs). By varying the carbon chain length of a surface-bound ligand molecule, 1-alkynyl acid, different morphologies of PSCs were obtained accompanied by an over 1000-fold photoluminescence improvement compared with that of PQDs. Systematic analyses have shown, for the first time, that under UV irradiation, CsBr, the byproduct formed during PQDs synthesis, could effectively catalyze the homocoupling reaction between two alkynyl groups, which further worked as a driving force to push forward the self-assembly of PQDs.
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Affiliation(s)
- Hongbo Li
- Institute of Advanced Materials (IAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
| | - Xiangdong Liu
- Institute of Advanced Materials (IAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
| | - Qifei Ying
- Institute of Advanced Materials (IAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
| | - Chao Wang
- College of Engineering and Applied Sciences, State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu, 211816, China
| | - Wei Jia
- Laboratory of Energy Materials Chemistry, Ministry of Education, Key Laboratory of Advanced Functional Materials, Autonomous Region, Institute of Applied Chemistry, Xinjiang University, Urumqi, Xinjiang, 830046, China
| | - Xing Xing
- College of Engineering and Applied Sciences, State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu, 211816, China
| | - Lisha Yin
- Institute of Advanced Materials (IAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
| | - Zhenda Lu
- College of Engineering and Applied Sciences, State Key Laboratory of Analytical Chemistry for Life Science, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, Jiangsu, 211816, China
| | - Kun Zhang
- Institute of Advanced Materials (IAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
| | - Yue Pan
- Institute of Advanced Materials (IAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
| | - Zhan Shi
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, Jilin, 130012, China
| | - Ling Huang
- Institute of Advanced Materials (IAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
| | - Dianzeng Jia
- Laboratory of Energy Materials Chemistry, Ministry of Education, Key Laboratory of Advanced Functional Materials, Autonomous Region, Institute of Applied Chemistry, Xinjiang University, Urumqi, Xinjiang, 830046, China
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60
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Shen Z, Zhao S, Song D, Xu Z, Qiao B, Song P, Bai Q, Cao J, Zhang G, Swelm W. Improving the Quality and Luminescence Performance of All-Inorganic Perovskite Nanomaterials for Light-Emitting Devices by Surface Engineering. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1907089. [PMID: 32431070 DOI: 10.1002/smll.201907089] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 03/15/2020] [Accepted: 03/24/2020] [Indexed: 06/11/2023]
Abstract
Lead halide perovskites and their applications in the optoelectronic field have garnered intensive interest over the years. Inorganic perovskites (IHP), though a novel class of material, are considered as one of the most promising optoelectronic materials. These materials are widely used in detectors, solar cells, and other devices, owing to their excellent charge-transport properties, high defect tolerance, composition- and size-dependent luminescence, narrow emission, and high photoluminescence quantum yield. In recent years, numerous encouraging achievements have been realized, especially in the research of CsPbX3 (X = Cl, Br, I) nanocrystals (NCs) and surface engineering. Therefore, it is necessary to summarize the principles and effects of these surface engineering optimization methods. It is also important to scientifically guide the applications and promote the development of perovskites more efficiently. Herein, the principles of surface ligands are reviewed, and various surface treatment methods used in CsPbX3 NCs as well as quantum-dot light-emitting diodes are presented. Finally, a brief outlook on CsPbX3 NC surface engineering is offered, illustrating the present challenges and the direction in which future investigations are intended to obtain high-quality CsPbX3 NCs that can be utilized in more applications.
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Affiliation(s)
- Zhaohui Shen
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing, 100044, China
| | - Suling Zhao
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing, 100044, China
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Dandan Song
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing, 100044, China
| | - Zheng Xu
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing, 100044, China
| | - Bo Qiao
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing, 100044, China
| | - Pengjie Song
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing, 100044, China
| | - Qiongyu Bai
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing, 100044, China
| | - Jingyue Cao
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing, 100044, China
| | - Gaoqian Zhang
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing, 100044, China
| | - Wageh Swelm
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
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61
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Cao F, Yu D, Ma W, Xu X, Cai B, Yang YM, Liu S, He L, Ke Y, Lan S, Choy KL, Zeng H. Shining Emitter in a Stable Host: Design of Halide Perovskite Scintillators for X-ray Imaging from Commercial Concept. ACS NANO 2020; 14:5183-5193. [PMID: 31774652 DOI: 10.1021/acsnano.9b06114] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Halide perovskite (HP) nanocrystals (NCs) have recently shown great potential for X-ray detection and imaging. However, the practical application still has a long way to go with many technical requirements waiting to be fulfilled, including structure optimization, stability enhancement, and cost reduction. A design principle in this beginning stage is urgently needed but still lacking. Herein, with an "emitter-in-matrix" principle refined from commercial scintillators, CsPbBr3@Cs4PbBr6 with emissive CsPbBr3 NCs embedded inside a solid-state Cs4PbBr6 host is subjected to X-ray sensing and imaging. The Cs4PbBr6 matrix not only enhances the attenuation of X-rays but also dramatically improves the stability of CsPbBr3 NCs. A favorable optical design with the Cs4PbBr6 matrix being transparent to the emission from CsPbBr3 NCs enables efficient light output. As a result, stable and sensitive scintillation response to X-ray signals is demonstrated with superior linearity and ultrahigh time resolution. In order to show the huge potential for practical applications, X-ray imaging using a large-area film (360 mm × 240 mm) by the blade-coating technique is carried out to obtain a high-quality image of interior structures invisible to the human eye. In addition to the above advantages in optics, CsPbBr3@Cs4PbBr6 also enjoys facile solution synthesis with large scalability, excellent repeatability, and low cost.
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Affiliation(s)
- Fei Cao
- Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Dejian Yu
- Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Wenbo Ma
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, Zhejiang 310007, China
| | - Xiaobao Xu
- Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Bo Cai
- Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Yang Michael Yang
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, Zhejiang 310007, China
| | - Sinan Liu
- Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei Avenue, Nanjing 210094, China
| | - Lunhua He
- China Spallation Neutron Source, Dongguan Branch, Institute of High Energy Physics, Chinese Academy of Sciences, Dongguan 523803, China
| | - Yubin Ke
- China Spallation Neutron Source, Dongguan Branch, Institute of High Energy Physics, Chinese Academy of Sciences, Dongguan 523803, China
| | - Si Lan
- Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei Avenue, Nanjing 210094, China
| | - Kwang-Leong Choy
- Institute for Materials Discovery, University College London, Roberts Building, Malet Place, London WC1E 7JE, United Kingdom
| | - Haibo Zeng
- Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
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62
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Ghaithan HM, Alahmed ZA, Qaid SMH, Hezam M, Aldwayyan AS. Density Functional Study of Cubic, Tetragonal, and Orthorhombic CsPbBr 3 Perovskite. ACS OMEGA 2020; 5:7468-7480. [PMID: 32280890 PMCID: PMC7144159 DOI: 10.1021/acsomega.0c00197] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 03/12/2020] [Indexed: 05/05/2023]
Abstract
Cesium lead bromide (CsPbBr3) perovskite has recently gained significance owing to its rapidly increasing performance when used for light-emitting devices. In this study, we used density functional theory to determine the structural, electronic, and optical properties of the cubic, tetragonal, and orthorhombic temperature-dependent phases of CsPbBr3 perovskite using the full-potential linear augmented plane wave method. The electronic properties of CsPbBr3 perovskite have been investigated by evaluating their changes upon exerting spin-orbit coupling (SOC). The following exchange potentials were used: the local density approximation (LDA), Perdew-Burke-Ernzerhof generalized gradient approximation (PBE-GGA), Engel-Vosko GGA (EV-GGA), Perdew-Burke-Ernzerhof GGA revised for solids (PBEsol-GGA), modified Becke-Johnson GGA (mBJ-GGA), new modified Becke-Johnson GGA (nmBJ-GGA), and unmodified Becke-Johnson GGA (umBJ-GGA). Our band structure results indicated that the cubic, tetragonal, and orthorhombic phases have direct energy bandgaps. By including the SOC effect in the calculations, the bandgaps computed with mBJ-GGA and nmBJ-GGA were found to be in good agreement with the experimental results. Additionally, despite the large variations in their lattice constants, the three CsPbBr3 phases possessed similar optical properties. These results demonstrate a wide temperature range of operation for CsPbBr3.
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Affiliation(s)
- Hamid M. Ghaithan
- Physics
and Astronomy Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
- Physics
Department, College of Education and Linguistic, Amran University, Amran, Yemen
| | - Zeyad A. Alahmed
- Physics
and Astronomy Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Saif M. H. Qaid
- Physics
and Astronomy Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mahmoud Hezam
- King
Abdullah Institute for Nanotechnology, King
Saud University, P.O. Box 2454, Riyadh 11451, Saudi Arabia
| | - Abdullah S. Aldwayyan
- Physics
and Astronomy Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
- K.A.CARE
Energy Research and Innovation Center at Riyadh, P.O. Box 2022, Riyadh 11454, Saudi Arabia
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63
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Efficiency Improvement of MAPbI3 Perovskite Solar Cells Based on a CsPbBr3 Quantum Dot/Au Nanoparticle Composite Plasmonic Light-Harvesting Layer. ENERGIES 2020. [DOI: 10.3390/en13061471] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We demonstrate a method to enhance the power conversion efficiency (PCE) of MAPbI3 perovskite solar cells through localized surface plasmon (LSP) coupling with gold nanoparticles:CsPbBr3 hybrid perovskite quantum dots (AuNPs:QD-CsPbBr3). The plasmonic AuNPs:QD-CsPbBr3 possess the features of high light-harvesting capacity and fast charge transfer through the LSP resonance effect, thus improving the short-circuit current density and the fill factor. Compared to the original device without Au NPs, a 27.8% enhancement in PCE of plasmonic AuNPs:QD-CsPbBr3/MAPbI3 perovskite solar cells was achieved upon 120 μL Au NP solution doping. This improvement can be attributed to the formation of surface plasmon resonance and light scattering effects in Au NPs embedded in QD-CsPbBr3, resulting in improved light absorption due to plasmonic nanoparticles.
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64
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Lou H, Lin C, Fang Z, Jiang L, Chen X, Ye Z, He H. Coexistence of light-induced photoluminescence enhancement and quenching in CH 3NH 3PbBr 3 perovskite films. RSC Adv 2020; 10:11054-11059. [PMID: 35495358 PMCID: PMC9050461 DOI: 10.1039/d0ra00605j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 03/06/2020] [Indexed: 11/21/2022] Open
Abstract
Lead halide perovskites are promising semiconductors for various optoelectronic devices working in a wide photo-excitation density regime. However, photo-induced instability, attributed to illumination-activated mobile ions, has been an obstacle to their application. Herein, we use the time evolution of photoluminescence (PL) to investigate the light illumination effects of CH3NH3PbBr3 perovskite films under relatively high excitation (up to 4.5 W cm-2). We demonstrate that continuous illumination can lead to both PL enhancement and PL quenching simultaneously, with their weight ratios depending on the excitation density. The experimental data can be well described and interpreted by considering the coexistence of and competition between the photo-induced annihilation and the formation of long-living filled trap states. Our study may provide in-depth insight into the photo-induced instability of perovskite films and help to improve the performance of perovskite-based optoelectronic devices.
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Affiliation(s)
- Haoran Lou
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University Hangzhou 310027 China
| | - Chen Lin
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University Hangzhou 310027 China
| | - Zhishan Fang
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University Hangzhou 310027 China
| | - Li Jiang
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University Hangzhou 310027 China
| | - Xiaofeng Chen
- School of Environmental Science and Engineering, Yangzhou University Yangzhou 225127 China
| | - Zhizhen Ye
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University Hangzhou 310027 China
| | - Haiping He
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University Hangzhou 310027 China
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65
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Yang L, Wang T, Min Q, Pi C, Li F, Yang X, Li K, Zhou D, Qiu J, Yu X, Xu X. Ultrahigh photo-stable all-inorganic perovskite nanocrystals and their robust random lasing. NANOSCALE ADVANCES 2020; 2:888-895. [PMID: 36133243 PMCID: PMC9418371 DOI: 10.1039/c9na00775j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 01/15/2020] [Indexed: 06/15/2023]
Abstract
Photo-instability has prevented further commercialization of all-inorganic perovskite nanocrystals (NCs) in the field of high-power optoelectronics. Here, an accelerated transformation process from non-luminescent Cs4PbBr6 to CsPbBr3 NCs with bright green emission is explored with irradiation at 365 nm during water-triggered structural transformation. The photoelectric field provided by the photon energy of 365 nm promotes the rapid stripping of CsBr and atomic reconstruction, contributing to the production of ultrahigh photo-stable defect-free CsPbBr3 NCs. The robust emission output of the as-obtained CsPbBr3 NCs is well preserved even when recorded after 160 min. Moreover, a long-term stable random lasing could be achieved when excited using an ∼800 nm femtosecond laser for at least 8.6 × 107 laser shots. Our results not only elucidate the photo-induced accelerated phase transformation process of the all-inorganic perovskites, but also open up opportunities to synthesize highly stable CsPbBr3 NCs for their practical application in photovoltaics and optoelectronics.
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Affiliation(s)
- Liuli Yang
- Faculty of Materials Science and Engineering, Kunming University of Science and Technology Wenchang Road Kunming 650093 China
| | - Ting Wang
- Faculty of Materials Science and Engineering, Kunming University of Science and Technology Wenchang Road Kunming 650093 China
| | - Qiuhong Min
- Faculty of Materials Science and Engineering, Kunming University of Science and Technology Wenchang Road Kunming 650093 China
| | - Chaojie Pi
- Faculty of Materials Science and Engineering, Kunming University of Science and Technology Wenchang Road Kunming 650093 China
| | - Fan Li
- Department of Materials Science and Engineering, Nanchang University 999 Xuefu Avenue Nanchang 330031 China
| | - Xiao Yang
- Department of Materials Science and Engineering, Nanchang University 999 Xuefu Avenue Nanchang 330031 China
| | - Kongzhai Li
- State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology Kunming 650093 China
| | - Dacheng Zhou
- Faculty of Materials Science and Engineering, Kunming University of Science and Technology Wenchang Road Kunming 650093 China
| | - Jianbei Qiu
- Faculty of Materials Science and Engineering, Kunming University of Science and Technology Wenchang Road Kunming 650093 China
| | - Xue Yu
- Faculty of Materials Science and Engineering, Kunming University of Science and Technology Wenchang Road Kunming 650093 China
| | - Xuhui Xu
- Faculty of Materials Science and Engineering, Kunming University of Science and Technology Wenchang Road Kunming 650093 China
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66
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Pan L, Ye T, Qin C, Zhou B, Lei N, Chen S, Yan P, Wang X. α-CsPbI 3 Nanocrystals by Ultraviolet Light-Driven Oriented Attachment. J Phys Chem Lett 2020; 11:913-919. [PMID: 31952443 DOI: 10.1021/acs.jpclett.9b03367] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Size and crystallinity of building units in the perovskite layer are of great significance to photovoltaic performance. Thus, to fabricate large-grain-size perovskite materials with the advantage of good crystallinity is quite necessary. The oriented attachment strategy has been proofed as an efficient method to control crystal growth. Herein, we reported on oriented attachment of α-CsPbI3 quantum dots (QDs) into a large-grain-size nanocrystal under moderate ultraviolet (UV) light. By virtue of atomic-resolution TEM and X-ray absorption fine structure (XAFS) spectroscopy, we observed the UV-directed structure-evolution and growth process. This is trigged by UV-light illumination (7 W, 365 nm), which drives the oriented assembly of QDs into a large nanoparticle along {110} facets. Moreover, we also visualized a damage process of the α-CsPbI3 QDs to photoinactive-δ-phase ones and finally into PbI2 under high-power UV-light (100 W, 365 nm) exposure. The findings provide a prototype for fabricating large-size perovskite nanostructures with promising properties.
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Affiliation(s)
- Lu Pan
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Department of Physics, School of Science , Beijing Jiaotong University , Beijing 100044 , China
| | - Tao Ye
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Department of Physics, School of Science , Beijing Jiaotong University , Beijing 100044 , China
| | - Changdong Qin
- Institute of Microstructure and Properties of Advanced Materials , Beijing University of Technology , Beijing 100124 , China
| | - Bo Zhou
- Chemistry and Chemical Engineering Guangdong Laboratory , Shantou 515031 , China
| | - Nuo Lei
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Department of Physics, School of Science , Beijing Jiaotong University , Beijing 100044 , China
| | - Shuang Chen
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Department of Physics, School of Science , Beijing Jiaotong University , Beijing 100044 , China
| | - Pengfei Yan
- Institute of Microstructure and Properties of Advanced Materials , Beijing University of Technology , Beijing 100124 , China
| | - Xi Wang
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, Department of Physics, School of Science , Beijing Jiaotong University , Beijing 100044 , China
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67
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Band structure engineering in metal halide perovskite nanostructures for optoelectronic applications. NANO MATERIALS SCIENCE 2019. [DOI: 10.1016/j.nanoms.2019.10.004] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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68
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Dong Y, Hu H, Xu X, Gu Y, Chueh CC, Cai B, Yu D, Shen Y, Zou Y, Zeng H. Photon-Induced Reshaping in Perovskite Material Yields of Nanocrystals with Accurate Control of Size and Morphology. J Phys Chem Lett 2019; 10:4149-4156. [PMID: 31290657 DOI: 10.1021/acs.jpclett.9b01673] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Benefiting from morphology-/size-tunable optical features, nanocrystals have been considered promising candidates for display or lighting applications. To achieve selective characteristic emission, precise control in size and morphology is thus a prerequisite. Herein, we report that the nanosecond-pulsed laser irradiation induces CsPbBr3 reshaping, yielding precise control of size and morphology. Under 532 and 355 nm laser irradiation, polydisperse CsPbBr3 nanocrystals or raw micron powders can be reshaped into uniform sizes of 12 and 6 nm, respectively. Moreover, by tuning ligand composition, the morphology of reshaped nanocrystals can be manipulated, such as nanocubes, nanorods, or nanosheets. Results reveal that the reshaping process relies on striving for a delicate balance between energy deposition and heat dissipation under irradiation. A low dissipation rate leads to temperature rising and lattice breaking, which turn out to be the driving forces for reshaping. This feasible method provides a reliable, and scalable route toward preparation of perovskite functional nanocrystals.
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Affiliation(s)
- Yuhang Dong
- Key Laboratory of Advanced Display Materials and Devices, Ministry of Industry and Information Technology, Institute of Optoelectronics & Nanomaterials, College of Materials Science and Engineering , Nanjing University of Science and Technology , Nanjing 210094 , China
| | - Han Hu
- Key Laboratory of Advanced Display Materials and Devices, Ministry of Industry and Information Technology, Institute of Optoelectronics & Nanomaterials, College of Materials Science and Engineering , Nanjing University of Science and Technology , Nanjing 210094 , China
| | - Xiaobao Xu
- Key Laboratory of Advanced Display Materials and Devices, Ministry of Industry and Information Technology, Institute of Optoelectronics & Nanomaterials, College of Materials Science and Engineering , Nanjing University of Science and Technology , Nanjing 210094 , China
| | - Yu Gu
- Key Laboratory of Advanced Display Materials and Devices, Ministry of Industry and Information Technology, Institute of Optoelectronics & Nanomaterials, College of Materials Science and Engineering , Nanjing University of Science and Technology , Nanjing 210094 , China
| | - Chu-Chen Chueh
- Department of Chemical Engineering , National Taiwan University , Taipei 10617 , Taiwan
| | - Bo Cai
- Key Laboratory of Advanced Display Materials and Devices, Ministry of Industry and Information Technology, Institute of Optoelectronics & Nanomaterials, College of Materials Science and Engineering , Nanjing University of Science and Technology , Nanjing 210094 , China
| | - Dejian Yu
- Key Laboratory of Advanced Display Materials and Devices, Ministry of Industry and Information Technology, Institute of Optoelectronics & Nanomaterials, College of Materials Science and Engineering , Nanjing University of Science and Technology , Nanjing 210094 , China
| | - Yalong Shen
- Key Laboratory of Advanced Display Materials and Devices, Ministry of Industry and Information Technology, Institute of Optoelectronics & Nanomaterials, College of Materials Science and Engineering , Nanjing University of Science and Technology , Nanjing 210094 , China
| | - Yousheng Zou
- Key Laboratory of Advanced Display Materials and Devices, Ministry of Industry and Information Technology, Institute of Optoelectronics & Nanomaterials, College of Materials Science and Engineering , Nanjing University of Science and Technology , Nanjing 210094 , China
| | - Haibo Zeng
- Key Laboratory of Advanced Display Materials and Devices, Ministry of Industry and Information Technology, Institute of Optoelectronics & Nanomaterials, College of Materials Science and Engineering , Nanjing University of Science and Technology , Nanjing 210094 , China
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