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Giancaspro M, Panniello A, Depalo N, Comparelli R, Striccoli M, Curri ML, Fanizza E. Understanding the Effect of the Synthetic Method and Surface Chemistry on the Properties of CsPbBr 3 Nanoparticles. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 14:81. [PMID: 38202535 PMCID: PMC10780980 DOI: 10.3390/nano14010081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 12/22/2023] [Accepted: 12/25/2023] [Indexed: 01/12/2024]
Abstract
Over the last decade, the attractive properties of CsPbBr3 nanoparticles (NPs) have driven ever-increasing progress in the development of synthetic procedures to obtain high-quality NPs at high concentrations. Understanding how the properties of NPs are influenced by the composition of the reaction mixture in combination with the specific synthetic methodology is crucial, both for further elucidating the fundamental characteristics of this class of materials and for their manufacturing towards technological applications. This work aims to shed light on this aspect by synthesizing CsPbBr3 NPs by means of two well-assessed synthetic procedures, namely, hot injection (HI) and ligand-assisted reprecipitation (LARP) in non-polar solvents, using PbBr2 and Cs2CO3 as precursors in the presence of already widely investigated ligands. The overall goal is to study and compare the properties of the NPs to understand how each synthetic method influences the NPs' size and/or the optical properties. Reaction composition and conditions are purposely tuned towards the production of nanocubes with narrow size distribution, high emission properties, and the highest achievable concentration. As a result, the formation of bulk crystals as precipitate in LARP limits the achievement of a highly concentrated NP solution. The size of the NPs obtained by LARP seems to be poorly affected by the ligands' nature and the excess bromide, as consequence of bromide-rich solvation agents, effectively results in NPs with excellent emission properties. In contrast, NPs synthesized by HI exhibit high reaction yield, diffusion growth-controlled size, and less striking emission properties, probably ascribed to a bromide-deficient condition.
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Affiliation(s)
- Mariangela Giancaspro
- Dipartimento di Chimica, University of Bari, Via Orabona 4, 70126 Bari, Italy;
- National Research Council (CNR)-Institute for Physical Chemistry Processes (IPCF), SO Bari, Via Orabona 4, 70126 Bari, Italy; (A.P.); (N.D.); (M.S.)
| | - Annamaria Panniello
- National Research Council (CNR)-Institute for Physical Chemistry Processes (IPCF), SO Bari, Via Orabona 4, 70126 Bari, Italy; (A.P.); (N.D.); (M.S.)
| | - Nicoletta Depalo
- National Research Council (CNR)-Institute for Physical Chemistry Processes (IPCF), SO Bari, Via Orabona 4, 70126 Bari, Italy; (A.P.); (N.D.); (M.S.)
| | - Roberto Comparelli
- National Research Council (CNR)-Institute for Physical Chemistry Processes (IPCF), SO Bari, Via Orabona 4, 70126 Bari, Italy; (A.P.); (N.D.); (M.S.)
- Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Bari Research Unit, 50121 Firenze, Italy
| | - Marinella Striccoli
- National Research Council (CNR)-Institute for Physical Chemistry Processes (IPCF), SO Bari, Via Orabona 4, 70126 Bari, Italy; (A.P.); (N.D.); (M.S.)
- Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Bari Research Unit, 50121 Firenze, Italy
| | - Maria Lucia Curri
- Dipartimento di Chimica, University of Bari, Via Orabona 4, 70126 Bari, Italy;
- National Research Council (CNR)-Institute for Physical Chemistry Processes (IPCF), SO Bari, Via Orabona 4, 70126 Bari, Italy; (A.P.); (N.D.); (M.S.)
- Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Bari Research Unit, 50121 Firenze, Italy
| | - Elisabetta Fanizza
- Dipartimento di Chimica, University of Bari, Via Orabona 4, 70126 Bari, Italy;
- National Research Council (CNR)-Institute for Physical Chemistry Processes (IPCF), SO Bari, Via Orabona 4, 70126 Bari, Italy; (A.P.); (N.D.); (M.S.)
- Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Bari Research Unit, 50121 Firenze, Italy
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2
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Zhang P, Xiong C, Liu Z, Chen H, Li S. CsPbBr3 nanocrystals as luminescent probe for in situ detection of chloride and iodide ions in water. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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3
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Wei J, Luo Q, Liang S, Zhou L, Chen P, Pang Q, Zhang JZ. Metal Halide Perovskite Nanocrystals for Near-Infrared Circularly Polarized Luminescence with High Photoluminescence Quantum Yield via Chiral Ligand Exchange. J Phys Chem Lett 2023:5489-5496. [PMID: 37289830 DOI: 10.1021/acs.jpclett.3c01184] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Using ligand exchange on FAPbI3 perovskite nanocrystals (PNCs) surface with chiral tridentate l-cysteine (l-cys) ligand, we successfully prepared chiral FAPbI3 PNCs that show circularly polarized luminescence (CPL) (dissymmetry factor; glum = 2.1 × 10-3) in the near-infrared (NIR) region from 700 to 850 nm and a photoluminescence quantum yield (PLQY) of 81%. The chiral characteristics of FAPbI3 PNCs are ascribed to induction by chiral l/d-cys, and the high PLQY is attributed to the passivation of the PNCs defects with l-cys. Also, effective passivation of defects on the surface of FAPbI3 PNCs by l-cys results in excellent stability toward atmospheric water and oxygen. The conductivity of the l-cys treated FAPbI3 NC films is improved, which is attributed to the partial substitution of l-cys for the insulating long oleyl ligand. The CPL of the l-cys ligand treated FAPbI3 PNCs film retains a glum of -2.7 × 10-4. This study demonstrates a facile yet effective approach to generating chiral PNCs with CPL for NIR photonics applications.
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Affiliation(s)
- Jianwu Wei
- School of Chemistry and Chemical Engineering, and Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning 530004, Guangxi, China
| | - Qiulian Luo
- School of Chemistry and Chemical Engineering, and Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning 530004, Guangxi, China
| | - Sengui Liang
- School of Chemistry and Chemical Engineering, and Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning 530004, Guangxi, China
| | - Liya Zhou
- School of Chemistry and Chemical Engineering, and Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning 530004, Guangxi, China
| | - Peican Chen
- School of Chemistry and Chemical Engineering, and Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning 530004, Guangxi, China
| | - Qi Pang
- School of Chemistry and Chemical Engineering, and Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning 530004, Guangxi, China
| | - Jin Zhong Zhang
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
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Romero Esquivel G, Toader V, Reven L, Kambhampati P. Ligand-flexible synthesis of strongly confined perovskite nanocrystals: a microwave synthetic approach. NANOSCALE 2022; 14:15789-15798. [PMID: 36250330 DOI: 10.1039/d2nr04597d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Perovskite nanocrystals (PNCs) and their strongly confined versions have traditionally been synthesized via hot injection methods. However, there is a pressing need for a new synthesis method that offers more flexible surface chemistry, improved optical properties, and greater sample stability. Here we explore and exploit the recently introduced microwave (MW) synthesis method, focusing on temperature and coating ligands, including a polymer ligand for which the hot injection method is unsuitable. The optimized microwave synthetic protocols produce PNCs with better exciton definition, lower polydispersity, and stronger ligand attachment than their hot injection counterparts. A variety of characterization techniques were employed to compare the properties of PNCs produced by the hot injection versus microwave methods. Insight into the molecular basis for the improved PNC properties was provided by FTIR and several NMR experiments that revealed the nature of the attachment of different ligands and their interactions with the PNCs. The overall results demonstrate that MW synthesis is a promising alternative to the HI method, particularly if smaller PNCs with strong quantum confinement are desired.
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Affiliation(s)
| | - Violeta Toader
- Department of Chemistry, McGill University, Montreal, Canada.
| | - Linda Reven
- Department of Chemistry, McGill University, Montreal, Canada.
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Mishra JK, Yantara N, Kanwat A, Furuhashi T, Ramesh S, Salim T, Jamaludin NF, Febriansyah B, Ooi ZE, Mhaisalkar S, Sum TC, Hippalgaonkar K, Mathews N. Defect Passivation Using a Phosphonic Acid Surface Modifier for Efficient RP Perovskite Blue-Light-Emitting Diodes. ACS APPLIED MATERIALS & INTERFACES 2022; 14:34238-34246. [PMID: 35604015 DOI: 10.1021/acsami.2c00899] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Defect management strategies are vital for enhancing the performance of perovskite-based optoelectronic devices, such as perovskite-based light-emitting diodes (PeLEDs). As additives can fucntion both as acrystallization modifier and/or defect passivator, a thorough study on the roles of additives is essential, especially for blue emissive Pe-LEDs, where the emission is strictly controlled by the n-domain distribution of the Ruddlesden-Popper (RP, L2An-1PbnX3n+1, where L refers to a bulky cation, while A and X are monovalent cation, and halide anion, respectively) perovskite films. Of the various additives that are available, octyl phosphonic acid (OPA) is of immense interest because of its ability to bind with uncoordinated Pb2+ ( notorious for nonradiative recombination) and therefore passivates them. Here, with the help of various spectroscopic techniques, such as X-ray photon-spectroscopy (XPS), Fourier-transform infrared spectroscopy (FTIR), and photoluminescence quantum yield (PLQY) measurements, we demonstrate the capability of OPA to bind and passivate unpaired Pb2+ defect sites. Modification to crystallization promoting higher n-domain formation is also observed from steady-state and transient absorption (TA) measurements. With OPA treatment, both the PLQY and EQE of the corresponding PeLED showed improvements up to 53% and 3.7% at peak emission wavelength of 485 nm, respectively.
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Affiliation(s)
- Jayanta Kumar Mishra
- Energy Research Institute @ NTU (ERI@N), Nanyang Technological University, 50 Nanyang Drive, Singapore 637553, Singapore
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Natalia Yantara
- Energy Research Institute @ NTU (ERI@N), Nanyang Technological University, 50 Nanyang Drive, Singapore 637553, Singapore
| | - Anil Kanwat
- Energy Research Institute @ NTU (ERI@N), Nanyang Technological University, 50 Nanyang Drive, Singapore 637553, Singapore
| | - Tomoki Furuhashi
- School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Sankaran Ramesh
- School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
- Energy Research Institute @NTU (ERI@N), Interdisciplinary Graduate Programme, Nanyang Technological University, 50 Nanyang Avenue, S2-B3a-01, Singapore 639798, Singapore
| | - Teddy Salim
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Nur Fadilah Jamaludin
- Energy Research Institute @ NTU (ERI@N), Nanyang Technological University, 50 Nanyang Drive, Singapore 637553, Singapore
| | - Benny Febriansyah
- Energy Research Institute @ NTU (ERI@N), Nanyang Technological University, 50 Nanyang Drive, Singapore 637553, Singapore
- Berkeley Educational Alliance for Research in Singapore (BEARS), Ltd., 1 CREATE Way, Singapore 138602, Singapore
| | - Zi En Ooi
- Institute of Materials Research & Engineering, Agency for Science, Technology and Research (A* STAR), Singapore 138632, Singapore
| | - Subodh Mhaisalkar
- Energy Research Institute @ NTU (ERI@N), Nanyang Technological University, 50 Nanyang Drive, Singapore 637553, Singapore
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Tze Chien Sum
- School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Kedar Hippalgaonkar
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
- Institute of Materials Research & Engineering, Agency for Science, Technology and Research (A* STAR), Singapore 138632, Singapore
| | - Nripan Mathews
- Energy Research Institute @ NTU (ERI@N), Nanyang Technological University, 50 Nanyang Drive, Singapore 637553, Singapore
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
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6
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Fan Y, Dong X, Guo Y, Xing H, Xia H, Li J, Wang E. Facile Uniaxial Electrospinning Strategy To Embed CsPbBr 3 Nanocrystals with Enhanced Water/Thermal Stabilities for Reversible Fluorescence Switches. Anal Chem 2022; 94:11360-11367. [PMID: 35921170 DOI: 10.1021/acs.analchem.2c02137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
All-inorganic halide perovskite nanocrystals with their fascinating optical properties have drawn increasing attention as promising nanoemitters. However, due to the intrinsic poor colloidal stability against the external environment, the practical applications are greatly limited. Herein, a facile and effective strategy for the in situ encapsulation of CsPbBr3 NCs into highly dense multichannel polyacrylonitrile (PAN) nanofibers via a uniaxial electrospinning strategy is presented. Such a facile uniaxial electrospinning strategy enables the in situ formation of CsPbBr3 NCs in PAN nanofibers without the introduction of stabilizers. Significantly, the obtained CsPbBr3 nanofibers not only display intense fluorescence with a high quantum yield (≈48%) but also present high stability when exposed to water and air owing to the peripheral protecting matrix of PAN. After immersing CsPbBr3@PAN nanofiber films in water for 100 days, the quantum yield of CsPbBr3@PAN nanofibers maintained 87.5% of the original value, which was much higher than that using CsPbBr3 NCs. Furthermore, based on the spectral overlap between the electrochromic material of ruthenium purple and fluorescence of CsPbBr3@PAN nanofiber films with excellent water stability, a reversible fluorescence switch is constructed with good fatigue resistance, suggesting their promising applications.
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Affiliation(s)
- Yongchao Fan
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China.,University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Xieyiming Dong
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China.,University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Yuchun Guo
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China
| | - Huanhuan Xing
- Institute of Materials Science and Devices, Suzhou University of Science and Technology, Suzhou 215011, China
| | - Hongyin Xia
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China.,University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Jing Li
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China.,University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Erkang Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, P. R. China.,University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
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7
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Liang GL, Ye XL, Wang GE, Xu G. In situ Alkylation Regulation of the Structure and Properties of Inorganic-Organic Hybrid Perovskite-Like Materials ※. ACTA CHIMICA SINICA 2022. [DOI: 10.6023/a21120573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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8
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Cao J, Yin Z, Pang Q, Lu Y, Nong X, Zhang JZ. Modulating optical properties and interfacial electron transfer of CsPbBr 3 perovskite nanocrystals via indium ion and chlorine ion co-doping. J Chem Phys 2021; 155:234701. [PMID: 34937354 DOI: 10.1063/5.0076037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
In this work, we demonstrated an in situ approach for doping CsPbBr3 nanocrystals (NCs) with In3+ and Cl- with a ligand-assisted precipitation method at room temperature. The In3+ and Cl- co-doped NCs are characterized by the powder x-ray diffraction patterns, ultraviolet-visible, photoluminescence (PL) spectroscopy, time-resolved PL (TRPL), ultraviolet photoelectron spectroscopy, x-ray photoelectron spectroscopy, and transmission electron microscopy. Based on PL and TRPL results, the non-radiative nature of In3+-doping induced localized impurity states is revealed. Furthermore, the impact of In3+ and Cl- doping on charge transfer (CT) from the NCs to molecular acceptors was investigated and the results indicate that the CT at the interface of NCs can be tuned and promoted by In3+ and Cl- co-doping. This enhanced CT is attributed to the enlarged energy difference between relevant states of the molecular acceptor and the NCs by In3+ and Cl- upon co-doping. This work provides insight into how to control interfacial CT in perovskite NCs, which is important for optoelectronic applications.
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Affiliation(s)
- Jianfei Cao
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, People's Republic of China
| | - Zuodong Yin
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, People's Republic of China
| | - Qi Pang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, People's Republic of China
| | - Yuexi Lu
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, People's Republic of China
| | - Xiuqing Nong
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, People's Republic of China
| | - Jin Zhong Zhang
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, USA
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9
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Ezzeldien M, Al-Qaisi S, Alrowaili ZA, Alzaid M, Maskar E, Es-Smairi A, Vu TV, Rai DP. Electronic and optical properties of bulk and surface of CsPbBr 3 inorganic halide perovskite a first principles DFT 1/2 approach. Sci Rep 2021; 11:20622. [PMID: 34663843 PMCID: PMC8523715 DOI: 10.1038/s41598-021-99551-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 09/14/2021] [Indexed: 11/20/2022] Open
Abstract
This work aims to test the effectiveness of newly developed DFT-1/2 functional in calculating the electronic and optical properties of inorganic lead halide perovskites CsPbBr3. Herein, from DFT-1/2 we have obtained the direct band gap of 2.36 eV and 3.82 eV for orthorhombic bulk and 001-surface, respectively. The calculated energy band gap is in qualitative agreement with the experimental findings. The bandgap of ultra-thin film of CsPbBr3 is found to be 3.82 eV, which is more than the expected range 1.23-3.10 eV. However, we have found that the bandgap can be reduced by increasing the surface thickness. Thus, the system under investigation looks promising for optoelectronic and photocatalysis applications, due to the bandgap matching and high optical absorption in UV-Vis (Ultra violet and visible spectrum) range of electro-magnetic(em) radiation.
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Affiliation(s)
- Mohammed Ezzeldien
- Physics Department, College of Science, Jouf University, P.O. Box 2014, Sakaka, Al-Jouf, Saudi Arabia
| | - Samah Al-Qaisi
- Palestinian Ministry of Education and Higher Education, Nablus, Palestine
| | - Z A Alrowaili
- Physics Department, College of Science, Jouf University, P.O. Box 2014, Sakaka, Al-Jouf, Saudi Arabia
| | - Meshal Alzaid
- Physics Department, College of Science, Jouf University, P.O. Box 2014, Sakaka, Al-Jouf, Saudi Arabia
| | - E Maskar
- Nanomaterial and Nanotechnology Unit, E. N. S. Rabat, Energy Research Center, Faculty of Sciences, Mohammed V University in Rabat, B.P. 1014, Rabat, Morocco
| | - A Es-Smairi
- Laboratory of Physics of Condensed Matters and Renewables Energies, Hassan II University, Faculty of Sciences and Technologies, B.P 146, 20650, Mohammedia, Morocco
| | - Tuan V Vu
- Division of Computational Physics, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| | - D P Rai
- Physical Sciences Research Center (PSRC), Department of Physics, Pachhunga University College, Mizoram University, Aizawl, India.
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10
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Hills‐Kimball K, Yang H, Cai T, Wang J, Chen O. Recent Advances in Ligand Design and Engineering in Lead Halide Perovskite Nanocrystals. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2100214. [PMID: 34194945 PMCID: PMC8224438 DOI: 10.1002/advs.202100214] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 03/17/2021] [Indexed: 05/09/2023]
Abstract
Lead halide perovskite (LHP) nanocrystals (NCs) have recently garnered enhanced development efforts from research disciplines owing to their superior optical and optoelectronic properties. These materials, however, are unlike conventional quantum dots, because they possess strong ionic character, labile ligand coverage, and overall stability issues. As a result, the system as a whole is highly dynamic and can be affected by slight changes of particle surface environment. Specifically, the surface ligand shell of LHP NCs has proven to play imperative roles throughout the lifetime of a LHP NC. Recent advances in engineering and understanding the roles of surface ligand shells from initial synthesis, through postsynthetic processing and device integration, finally to application performances of colloidal LHP NCs are covered here.
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Affiliation(s)
| | - Hanjun Yang
- Department of ChemistryBrown UniversityProvidenceRI02912USA
| | - Tong Cai
- Department of ChemistryBrown UniversityProvidenceRI02912USA
| | - Junyu Wang
- Department of ChemistryBrown UniversityProvidenceRI02912USA
| | - Ou Chen
- Department of ChemistryBrown UniversityProvidenceRI02912USA
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11
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Beard MC, Peng X, Hens Z, Weiss EA. Introduction to special issue: Colloidal quantum dots. J Chem Phys 2021; 153:240401. [PMID: 33380102 DOI: 10.1063/5.0039506] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Affiliation(s)
- Matthew C Beard
- Chemistry and Nanoscience Center, National Renewable Energy Laboratory, Golden, Colorado 80401, USA
| | - Xiaogang Peng
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Zeger Hens
- Center for Nano and Biophotonics, Ghent University, 9000 Ghent, Belgium
| | - Emily A Weiss
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA
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