1
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Chen D, Xu Y, Lu J, Tian Y, Li T, Jia P, Wang X, Zhang L, Hou Y, Wang L, Zhang Q, Ye Z, Lu J. Intercalation-Induced Localized Conversion Reaction in h-CuSe for Ultrafast-Rechargeable and Long-Cycling Sodium Metal Battery. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2404640. [PMID: 38775475 DOI: 10.1002/adma.202404640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Revised: 05/07/2024] [Indexed: 06/13/2024]
Abstract
Cathode materials of sodium-based batteries with high specific capacity and fast charge-discharge mode, as well as ultralong reversible cycles at wide applied temperatures, are essential for future development of advanced energy storage system. Developing transition metal selenides with intercalation features provides a new strategy for realizing the above cathode materials. Herein, this work reports a storage mechanism of sodium ion in hexagonal CuSe (h-CuSe) based on the density functional theory (DFT) guidance. This work reveals that the two-dimensional ion intercalation triggers localized redox reaction in the h-CuSe bulk phase, termed intercalation-induced localized conversion (ILC) mechanism, to stabilize the sodium storage structure by forming localized Cu7Se4 transition phase and adjusting the near-edge coordination state of the Cu sites to achieve high reversible capacity and ultra-long cycling life, while allowing rapid charge-discharge cycling over a wide temperature range.
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Affiliation(s)
- Dongliang Chen
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Yunkai Xu
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Jianguo Lu
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Yang Tian
- Zhijiang Lab, Hangzhou, 311121, China
| | - Tongtong Li
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Peng Jia
- State Key Laboratory of Metastable Materials Science and Technology, School of Materials Science and Engineering, Yanshan University, Qinhuangdao, 066004, China
| | - Xu Wang
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Liqiang Zhang
- State Key Laboratory of Metastable Materials Science and Technology, School of Materials Science and Engineering, Yanshan University, Qinhuangdao, 066004, China
| | - Yang Hou
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Liguang Wang
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Qinghua Zhang
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Zhizhen Ye
- State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Jun Lu
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
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2
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Banerjee P, Prakapenka VB, Chariton S, Shevchenko EV. Compressibility Studies of Copper Selenides Obtained by Cation Exchange Reaction Revealing the New CsCl Phase. NANO LETTERS 2024; 24:6981-6989. [PMID: 38814739 DOI: 10.1021/acs.nanolett.4c01285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
In this study, we conducted a high-pressure investigation of Cu2-xSe nanostructures with pyramid- and plate-like morphologies, created through cation exchange from zinc-blende CdSe nanocrystals and wurtzite CdSe nanoplatelets respectively. Using a diamond anvil cell setup at the APS synchrotron, we observed the phase transitions in the Cu2-xSe nanostructures up to 40 GPa, identifying a novel CsCl-type lattice with Pm3̅m symmetry above 4 GPa. This CsCl-type structure, previously unreported in copper selenides, was partially retained after decompression. Our results indicate that the initial crystalline structure of CdSe does not affect the stability of Cu2-xSe nanostructures formed via cation exchange. Both morphologies of Cu2-xSe sintered under compression, potentially contributing to the stabilization of the high-pressure phase through interfacial defects. These findings are significant for discovering new phases with potential applications in future technologies.
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Affiliation(s)
- Progna Banerjee
- Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Vitali B Prakapenka
- Center for Advanced Radiation Sources, The University of Chicago, Chicago, Illinois 60637, United States
| | - Stella Chariton
- Center for Advanced Radiation Sources, The University of Chicago, Chicago, Illinois 60637, United States
| | - Elena V Shevchenko
- Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, United States
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3
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Jeong Y, Janani G, Kim D, An TY, Surendran S, Lee H, Moon DJ, Kim JY, Han MK, Sim U. Roles of Heterojunction and Cu Vacancies in the Au@Cu 2-xSe for the Enhancement of Electrochemical Nitrogen Reduction Performance. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37795987 DOI: 10.1021/acsami.3c07947] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/06/2023]
Abstract
The utilization of hydrogen (H2) as a fuel source is hindered by the limited infrastructure and storage requirements. In contrast, ammonia (NH3) offers a promising solution as a hydrogen carrier due to its high energy density, liquid storage capacity, low cost, and sustainable manufacturing. NH3 has garnered significant attention as a key component in the development of next-generation refueling stations, aligning with the goal of a carbon-free economy. The electrochemical nitrogen reduction reaction (ENRR) enables the production of NH3 from nitrogen (N2) under ambient conditions. However, the low efficiency of the ENRR is limited by challenges such as the electron-stealing hydrogen evolution reaction (HER) and the breaking of the stable N2 triple bond. To address these limitations and enhance ENRR performance, we prepared Au@Cu2-xSe electrocatalysts with a core@shell structure using a seed-mediated growth method and a facile hot-injection method. The catalytic activity was evaluated using both an aqueous electrolyte of KOH solution and a nonaqueous electrolyte consisting of tetrahydrofuran (THF) solvent with lithium perchlorate and ethanol as proton donors. ENRR in both aqueous and nonaqueous electrolytes was facilitated by the synergistic interaction between Au and Cu2-xSe (copper selenide), forming an Ohmic junction between the metal and p-type semiconductor that effectively suppressed the HER. Furthermore, in nonaqueous conditions, the Cu vacancies in the Cu2-xSe layer of Au@Cu2-xSe promoted the formation of lithium nitride (Li3N), leading to improved NH3 production. The synergistic effect of Ohmic junctions and Cu vacancies in Au@Cu2-xSe led to significantly higher ammonia yield and faradaic efficiency (FE) in nonaqueous systems compared to those in aqueous conditions. The maximum NH3 yields were approximately 1.10 and 3.64 μg h-1 cm-2, with the corresponding FE of 2.24 and 67.52% for aqueous and nonaqueous electrolytes, respectively. This study demonstrates an attractive strategy for designing catalysts with increased ENRR activity by effectively engineering vacancies and heterojunctions in Cu-based electrocatalysts in both aqueous and nonaqueous media.
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Affiliation(s)
- Yujin Jeong
- Hydrogen Energy Technology Laboratory, Korea Institute of Energy Technology (KENTECH), 200 Hyeoksin-ro, Naju, Jeonnam 58330, Republic of Korea
| | - Gnanaprakasam Janani
- Hydrogen Energy Technology Laboratory, Korea Institute of Energy Technology (KENTECH), 200 Hyeoksin-ro, Naju, Jeonnam 58330, Republic of Korea
| | - Dohun Kim
- Department of Energy Science & Engineering, Daegu Gyeongbuk Institute of Science & Technology (DGIST), Daegu 42988, Republic of Korea
| | - Tae-Yong An
- Hydrogen Energy Technology Laboratory, Korea Institute of Energy Technology (KENTECH), 200 Hyeoksin-ro, Naju, Jeonnam 58330, Republic of Korea
| | - Subramani Surendran
- Hydrogen Energy Technology Laboratory, Korea Institute of Energy Technology (KENTECH), 200 Hyeoksin-ro, Naju, Jeonnam 58330, Republic of Korea
| | - Hyunjung Lee
- Hydrogen Energy Technology Laboratory, Korea Institute of Energy Technology (KENTECH), 200 Hyeoksin-ro, Naju, Jeonnam 58330, Republic of Korea
| | - Dae Jun Moon
- Hydrogen Energy Technology Laboratory, Korea Institute of Energy Technology (KENTECH), 200 Hyeoksin-ro, Naju, Jeonnam 58330, Republic of Korea
| | - Joon Young Kim
- Hydrogen Energy Technology Laboratory, Korea Institute of Energy Technology (KENTECH), 200 Hyeoksin-ro, Naju, Jeonnam 58330, Republic of Korea
- Research Institute, NEEL Sciences, INC., Naju, Jeollanamdo 58326, Republic of Korea
| | - Mi-Kyung Han
- Department of Polymer Engineering, Graduate School, Alan G. MacDiarmid Energy Research Institute & School of Polymer Science and Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Uk Sim
- Hydrogen Energy Technology Laboratory, Korea Institute of Energy Technology (KENTECH), 200 Hyeoksin-ro, Naju, Jeonnam 58330, Republic of Korea
- Research Institute, NEEL Sciences, INC., Naju, Jeollanamdo 58326, Republic of Korea
- Center for Energy Storage System, Chonnam National University, Gwangju 61186, Republic of Korea
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4
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Enhanced thermoelectric properties of Cu2Se via Sb doping: An experimental and computational study. Ann Ital Chir 2022. [DOI: 10.1016/j.jeurceramsoc.2022.09.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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5
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Cho KH, Jain PK. Superionic Conduction in One-Dimensional Nanostructures. ACS NANO 2022; 16:12445-12451. [PMID: 35904553 DOI: 10.1021/acsnano.2c03732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Nanostructuring has become a powerful tool for tuning the electronic properties of materials and enhancing transport. As an example of relevance to next-generation battery technologies, nanocrystals have shown promise for realizing fast-ion conduction in solids; however, dissipationless ion transport over extended length scales is hindered by lossy interfaces formed between nanocrystals in a solid. Here we address this challenge by exploiting one-dimensional nanostructures for ion transport. Superionic conduction, with a record-high ionic conductivity of ∼4 S/cm at 150 °C, is demonstrated in solid electrolytes fabricated from nanowires of the earth-abundant solid copper selenide. This quasi-one-dimensional ionic conductivity is ∼5× higher than that in bulk cuprous selenide. Nanoscale dimensions in the radial direction lower ion-hopping barriers, while mesoscopically long, interface-free transport paths are available for ion transport in the axial direction. One-dimensional nanostructures can exceptionally boost solid-state devices that rely on ion transport.
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Affiliation(s)
- Ki-Hyun Cho
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Prashant K Jain
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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6
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Bu K, Hu Q, Qi X, Wang D, Guo S, Luo H, Lin T, Guo X, Zeng Q, Ding Y, Huang F, Yang W, Mao HK, Lü X. Nested order-disorder framework containing a crystalline matrix with self-filled amorphous-like innards. Nat Commun 2022; 13:4650. [PMID: 35945215 PMCID: PMC9363411 DOI: 10.1038/s41467-022-32419-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 07/29/2022] [Indexed: 11/16/2022] Open
Abstract
Solids can be generally categorized by their structures into crystalline and amorphous states with different interactions among atoms dictating their properties. Crystalline-amorphous hybrid structures, combining the advantages of both ordered and disordered components, present a promising opportunity to design materials with emergent collective properties. Hybridization of crystalline and amorphous structures at the sublattice level with long-range periodicity has been rarely observed. Here, we report a nested order-disorder framework (NOF) constructed by a crystalline matrix with self-filled amorphous-like innards that is obtained by using pressure to regulate the bonding hierarchy of Cu12Sb4S13. Combined in situ experimental and computational methods demonstrate the formation of disordered Cu sublattice which is embedded in the retained crystalline Cu framework. Such a NOF structure gives a low thermal conductivity (~0.24 W·m-1·K-1) and a metallic electrical conductivity (8 × 10-6 Ω·m), realizing the collaborative improvement of two competing physical properties. These findings demonstrate a category of solid-state materials to link the crystalline and amorphous forms in the sublattice-scale, which will exhibit extraordinary properties.
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Affiliation(s)
- Kejun Bu
- Center for High Pressure Science and Technology Advanced Research, Shanghai, 201203, China
| | - Qingyang Hu
- Center for High Pressure Science and Technology Advanced Research, Shanghai, 201203, China
| | - Xiaohuan Qi
- CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Dong Wang
- Center for High Pressure Science and Technology Advanced Research, Shanghai, 201203, China
| | - Songhao Guo
- Center for High Pressure Science and Technology Advanced Research, Shanghai, 201203, China
| | - Hui Luo
- Center for High Pressure Science and Technology Advanced Research, Shanghai, 201203, China
| | - Tianquan Lin
- CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Xiaofeng Guo
- Department of Chemistry and Alexandra Navrotsky Institute for Experimental Thermodynamics, Washington State University, Pullman, WA, 99164, USA
| | - Qiaoshi Zeng
- Center for High Pressure Science and Technology Advanced Research, Shanghai, 201203, China
| | - Yang Ding
- Center for High Pressure Science and Technology Advanced Research, Shanghai, 201203, China
| | - Fuqiang Huang
- CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Wenge Yang
- Center for High Pressure Science and Technology Advanced Research, Shanghai, 201203, China
| | - Ho-Kwang Mao
- Center for High Pressure Science and Technology Advanced Research, Shanghai, 201203, China
| | - Xujie Lü
- Center for High Pressure Science and Technology Advanced Research, Shanghai, 201203, China.
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7
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Mourdikoudis S, Antonaropoulos G, Antonatos N, Rosado M, Storozhuk L, Takahashi M, Maenosono S, Luxa J, Sofer Z, Ballesteros B, Thanh NTK, Lappas A. Heat-Up Colloidal Synthesis of Shape-Controlled Cu-Se-S Nanostructures-Role of Precursor and Surfactant Reactivity and Performance in N 2 Electroreduction. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:3369. [PMID: 34947718 PMCID: PMC8707546 DOI: 10.3390/nano11123369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 12/01/2021] [Accepted: 12/09/2021] [Indexed: 11/16/2022]
Abstract
Copper selenide-sulfide nanostructures were synthesized using metal-organic chemical routes in the presence of Cu- and Se-precursors as well as S-containing compounds. Our goal was first to examine if the initial Cu/Se 1:1 molar proportion in the starting reagents would always lead to equiatomic composition in the final product, depending on other synthesis parameters which affect the reagents reactivity. Such reaction conditions were the types of precursors, surfactants and other reagents, as well as the synthesis temperature. The use of 'hot-injection' processes was avoided, focusing on 'non-injection' ones; that is, only heat-up protocols were employed, which have the advantage of simple operation and scalability. All reagents were mixed at room temperature followed by further heating to a selected high temperature. It was found that for samples with particles of bigger size and anisotropic shape the CuSe composition was favored, whereas particles with smaller size and spherical shape possessed a Cu2-xSe phase, especially when no sulfur was present. Apart from elemental Se, Al2Se3 was used as an efficient selenium source for the first time for the acquisition of copper selenide nanostructures. The use of dodecanethiol in the presence of trioctylphosphine and elemental Se promoted the incorporation of sulfur in the materials crystal lattice, leading to Cu-Se-S compositions. A variety of techniques were used to characterize the formed nanomaterials such as XRD, TEM, HRTEM, STEM-EDX, AFM and UV-Vis-NIR. Promising results, especially for thin anisotropic nanoplates for use as electrocatalysts in nitrogen reduction reaction (NRR), were obtained.
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Affiliation(s)
- Stefanos Mourdikoudis
- Biophysics Group, Department of Physics and Astronomy, University College London, London WC1E 6BT, UK;
- UCL Healthcare Biomagnetics and Nanomaterials Laboratories, 21 Albemarle Street, London W1S 4BS, UK
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technicka 5, 16628 Prague, Czech Republic; (N.A.); (J.L.)
| | - George Antonaropoulos
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, Vassilika Vouton, 71110 Heraklion, Greece;
- Department of Chemistry, University of Crete, Voutes, 71003 Heraklion, Greece
| | - Nikolas Antonatos
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technicka 5, 16628 Prague, Czech Republic; (N.A.); (J.L.)
| | - Marcos Rosado
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and the Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain;
| | - Liudmyla Storozhuk
- Biophysics Group, Department of Physics and Astronomy, University College London, London WC1E 6BT, UK;
- UCL Healthcare Biomagnetics and Nanomaterials Laboratories, 21 Albemarle Street, London W1S 4BS, UK
| | - Mari Takahashi
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi 923-1292, Ishikawa, Japan; (M.T.); (S.M.)
| | - Shinya Maenosono
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi 923-1292, Ishikawa, Japan; (M.T.); (S.M.)
| | - Jan Luxa
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technicka 5, 16628 Prague, Czech Republic; (N.A.); (J.L.)
| | - Zdeněk Sofer
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technicka 5, 16628 Prague, Czech Republic; (N.A.); (J.L.)
| | - Belén Ballesteros
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and the Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain;
| | - Nguyen Thi Kim Thanh
- Biophysics Group, Department of Physics and Astronomy, University College London, London WC1E 6BT, UK;
- UCL Healthcare Biomagnetics and Nanomaterials Laboratories, 21 Albemarle Street, London W1S 4BS, UK
| | - Alexandros Lappas
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, Vassilika Vouton, 71110 Heraklion, Greece;
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8
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Growth of dendritic structures on the surface of copper selenide thin films. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127157] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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9
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Gan XY, Sen R, Millstone JE. Connecting Cation Exchange and Metal Deposition Outcomes via Hume-Rothery-Like Design Rules Using Copper Selenide Nanoparticles. J Am Chem Soc 2021; 143:8137-8144. [PMID: 34019400 DOI: 10.1021/jacs.1c02765] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Heterogenous nanomaterials containing various inorganic phases have far-reaching impacts both from the physical phenomena they reveal and the technologies they enable. While the variety and impact of these materials has been demonstrated in many reports, there is critical ambiguity in the factors that lead to major bifurcations in developing these heterostructures, for example, the formation of either mixed metal semiconductors or segregated metal-semiconductor phases. Here, we compare outcomes of independently introducing 5 different metal cations (Au3+, Ag+, Hg2+, Pd2+, and Pt2+) to antifluorite copper selenide (Cu2-xSe) nanoparticles (diameter = 52 ± 5 nm). This suite of metal cations allowed us to control for and evaluate a variety of potentially competing intrinsic system parameters including metal cation size, valency, and reduction potential as well as lattice volume change, lattice formation energy, and lattice mismatch. Upon secondary metal addition, we determined that the transformation of a cubic Cu2-xSe lattice will occur via cation exchange reaction when the change in symmetry to the resulting metal selenide phase(s) preserves mutually orthogonal lattice vectors. However, if the new lattice symmetry would be disrupted further, metal deposition is the likely outcome of secondary metal cation addition, forming metal-semiconductor heterostructures. These results suggest a synthesis design rule that relies on an intrinsic property of the material, not the reaction pathway, and indicates that more such factors may be found in other particle and synthetic systems.
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Affiliation(s)
- Xing Yee Gan
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Riti Sen
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Jill E Millstone
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States.,Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States.,Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
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10
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Lee K, Lee S. A nanoscale Cu 2-xSe ultrathin film deposited via atomic layer deposition and its memristive effects. NANOTECHNOLOGY 2021; 32:245202. [PMID: 33764902 DOI: 10.1088/1361-6528/abea36] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
An ultrathin film of copper selenide 50 nm thick was deposited using a home-made atomic layer deposition apparatus. Synthesized copper pivalate and bis(triethylsilyl) selenide precursors were used. The deposition rate at 160 °C was 0.48 Å per atomic layer deposition cycle. The thickness was monitored by an in situ ellipsometer and further analyzed by an atomic force microscope. The composition and structure of the film were confirmed by x-ray photoelectron spectroscopy, Raman spectroscopy, and x-ray diffraction to be Cu1.16Se. The fluorine-doped tin oxide/Cu1.16Se/tungsten wire memristor was fabricated and its memristive effect was investigated. The non-linear I-V curve and spike-timing-dependent plasticity of our Cu1.16Se memristor demonstrate that the short-term and long-term potentiation that occurs in a human brain can be mimicked by adjusting voltage-pulse intervals. A memristor is the electrical equivalent of a synapse. Our memristor has a 1 ms switching time, a 400 s retention time, Roff/on = 2, and reproducibility over 1000 cycles.
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Affiliation(s)
- Kyungsub Lee
- School of Chemistry, Seoul National University, Gwanak-Ro 1, Gwanak-Gu, Seoul, 08826, Republic of Korea
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11
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Sharma S, Singh B, Bindra P, Panneerselvam P, Dwivedi N, Senapati A, Adholeya A, Shanmugam V. Triple-Smart Eco-Friendly Chili Anthracnose Control Agro-Nanocarrier. ACS APPLIED MATERIALS & INTERFACES 2021; 13:9143-9155. [PMID: 33567821 DOI: 10.1021/acsami.0c18797] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Pesticide leaching and soil contamination are major issues in the present agriculture formulations. Hence, here 2D graphene oxide in combination with cationic, anionic, or nonionic polymers were tested for runoff resistance and targeted release behavior. Cationic polymer supplemented the binding of rGO on leaf surface by 30% more than control and reduced off-target leaching in soil by 45% more than control. Further, to enhance the fruit rot control caused by Colletotrichum capsici in chili crop, the rGO was decorated with Cu2-xSe nanocrystals, which provided combined disease control with captan. The chitosan coating in the nanocomposite added targeted pH-responsive fungal inhibition behavior and could reduce the C. capsici growth by ∼1/2 times compared to captan control.
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Affiliation(s)
- Sandeep Sharma
- Institute of Nano Science and Technology, Habitat Centre, Phase- 10, Sector- 64, Mohali, Punjab 160062, India
| | - Bharat Singh
- TERI-Deakin Nanobiotechnology Centre, TERI Gram, The Energy and Resources Institute, Gwal Pahari, Gurugram, Haryana 122003, India
| | - Pulkit Bindra
- Institute of Nano Science and Technology, Habitat Centre, Phase- 10, Sector- 64, Mohali, Punjab 160062, India
| | | | - Neeraj Dwivedi
- TERI-Deakin Nanobiotechnology Centre, TERI Gram, The Energy and Resources Institute, Gwal Pahari, Gurugram, Haryana 122003, India
| | | | - Alok Adholeya
- TERI-Deakin Nanobiotechnology Centre, TERI Gram, The Energy and Resources Institute, Gwal Pahari, Gurugram, Haryana 122003, India
| | - Vijayakumar Shanmugam
- Institute of Nano Science and Technology, Habitat Centre, Phase- 10, Sector- 64, Mohali, Punjab 160062, India
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12
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Abstract
Superionic conductors are prime candidates for the electrolytes of all-solid-state batteries. Our understanding of the mechanism and performance of superionic conductors is largely based on their idealized lattice structures. But how do defects in the lattice affect ionic structure and transport in these materials? This is a question answered here by in situ transmission electron microscopy of copper selenide, a classic superionic conductor. Nanowires of copper selenide exhibit antiphase boundaries which are a form of a planar defect. We examine the lattice structure around an antiphase boundary and monitor with atomic resolution how this structure evolves in an ordered-to-superionic phase transition. Antiphase boundaries are found to act as barriers to the propagation of the superionic phase. Antiphase boundaries also undergo spatial diffusion and shape changes resulting from thermally activated fluctuations of the neighboring ionic structure. These spatiotemporal insights highlight the importance of collective ionic transport and the role of defects in superionic conduction.
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Affiliation(s)
- Jaeyoung Heo
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Ki-Hyun Cho
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Prashant K Jain
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Materials Research Lab, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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13
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Pacoste LC, Jijana AN, Feleni U, Iwuoha E. Mercaptoalkanoic Acid‐Induced Band Gap Attenuation of Copper Selenide Quantum Dot. ChemistrySelect 2020. [DOI: 10.1002/slct.201903668] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Laura C. Pacoste
- SensorLab, Department of ChemistryUniversity of Western Cape Private Bag X17 Bellville 7535 South Africa
- Uppsala University Husargatan 3 752 37 Uppsala
| | - Abongile N. Jijana
- SensorLab, Department of ChemistryUniversity of Western Cape Private Bag X17 Bellville 7535 South Africa
| | - Usisipho Feleni
- Nanotechnology and Water Sustainability Research UnitUniversity of South Africa, College of Science, Engineering and Technology, Florida Campus Johannesburg South Africa
| | - Emmanuel Iwuoha
- SensorLab, Department of ChemistryUniversity of Western Cape Private Bag X17 Bellville 7535 South Africa
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14
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Li C, Sanli ES, Barragan-Yani D, Stange H, Heinemann MD, Greiner D, Sigle W, Mainz R, Albe K, Abou-Ras D, van Aken PA. Secondary-Phase-Assisted Grain Boundary Migration in CuInSe_{2}. PHYSICAL REVIEW LETTERS 2020; 124:095702. [PMID: 32202872 DOI: 10.1103/physrevlett.124.095702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 01/08/2020] [Indexed: 06/10/2023]
Abstract
Significant structural evolution occurs during the deposition of CuInSe_{2} solar materials when the Cu content increases. We use in situ heating in a scanning transmission electron microscope to directly observe how grain boundaries migrate during heating, causing nondefected grains to consume highly defected grains. Cu substitutes for In in the near grain boundary regions, turning them into a Cu-Se phase topotactic with the CuInSe_{2} grain interiors. Together with density functional theory and molecular dynamics calculations, we reveal how this Cu-Se phase makes the grain boundaries highly mobile.
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Affiliation(s)
- Chen Li
- Stuttgart Center for Electron Microscopy, Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany
| | - Ekin Simsek Sanli
- Stuttgart Center for Electron Microscopy, Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany
| | - Daniel Barragan-Yani
- Institute of Materials Science, Technical University Darmstadt, 64287 Darmstadt, Germany
| | - Helena Stange
- Institute of Materials Science and Technology, Technical University Berlin, 10587 Berlin, Germany
| | | | - Dieter Greiner
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, 14109 Berlin, Germany
| | - Wilfried Sigle
- Stuttgart Center for Electron Microscopy, Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany
| | - Roland Mainz
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, 14109 Berlin, Germany
| | - Karsten Albe
- Institute of Materials Science, Technical University Darmstadt, 64287 Darmstadt, Germany
| | - Daniel Abou-Ras
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, 14109 Berlin, Germany
| | - Peter A van Aken
- Stuttgart Center for Electron Microscopy, Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany
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15
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Liu WD, Yang L, Chen ZG, Zou J. Promising and Eco-Friendly Cu 2 X-Based Thermoelectric Materials: Progress and Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1905703. [PMID: 31944453 DOI: 10.1002/adma.201905703] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 10/18/2019] [Indexed: 06/10/2023]
Abstract
Due to the nature of their liquid-like behavior and high dimensionless figure of merit, Cu2 X (X = Te, Se, and S)-based thermoelectric materials have attracted extensive attention. The superionicity and Cu disorder at the high temperature can dramatically affect the electronic structure of Cu2 X and in turn result in temperature-dependent carrier-transport properties. Here, the effective strategies in enhancing the thermoelectric performance of Cu2 X-based thermoelectric materials are summarized, in which the proper optimization of carrier concentration and minimization of the lattice thermal conductivity are the main focus. Then, the stabilities, mechanical properties, and module assembly of Cu2 X-based thermoelectric materials are investigated. Finally, the future directions for further improving the energy conversion efficiency of Cu2 X-based thermoelectric materials are highlighted.
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Affiliation(s)
- Wei-Di Liu
- School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Lei Yang
- School of Materials Science and Engineering, Sichuan University, Chengdu, 610065, China
| | - Zhi-Gang Chen
- Centre for Future Materials, University of Southern Queensland, Springfield Central, Brisbane, Queensland, 4300, Australia
| | - Jin Zou
- School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, Queensland, 4072, Australia
- Centre for Microscopy and Microanalysis, The University of Queensland, Brisbane, Queensland, 4072, Australia
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16
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Zhang W, Zheng C, Dong Y, Yang JY, Liu L. Anharmonic phonon frequency and ultralow lattice thermal conductivity in β-Cu2Se liquid-like thermoelectrics. Phys Chem Chem Phys 2020; 22:28086-28092. [DOI: 10.1039/d0cp04591h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The prototype phonon-liquid electron-crystal β-Cu2Se has been ranked among the best thermoelectric material with its ultralow lattice thermal conductivity (κL).
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Affiliation(s)
- Wenjie Zhang
- School of Energy and Power Engineering
- Shandong University
- Jinan
- China
- Optics & Thermal Radiation Research Center
| | - Chong Zheng
- Science and Technology on Optical Radiation Laboratory
- Beijing 100854
- China
| | - Yanbing Dong
- Science and Technology on Optical Radiation Laboratory
- Beijing 100854
- China
| | - Jia-Yue Yang
- School of Energy and Power Engineering
- Shandong University
- Jinan
- China
- Optics & Thermal Radiation Research Center
| | - Linhua Liu
- School of Energy and Power Engineering
- Shandong University
- Jinan
- China
- Optics & Thermal Radiation Research Center
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17
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Gong J, Jain PK. Room-temperature superionic-phase nanocrystals synthesized with a twinned lattice. Nat Commun 2019; 10:3285. [PMID: 31337760 PMCID: PMC6650484 DOI: 10.1038/s41467-019-11229-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Accepted: 06/26/2019] [Indexed: 11/09/2022] Open
Abstract
The engineering of nanoscale features enables the properties of solid-state materials to be tuned. Here, we show the tunable preparation of cuprous sulfide nanocrystals ranging in internal structures from single-domain to multi-domain. The synthetic method utilizes in-situ oxidation to grow nanocrystals with a controlled degree of copper deficiency. Copper-deficient nanocrystals spontaneously undergo twinning to a multi-domain structure. Nanocrystals with twinned domains exhibit markedly altered crystallographic phase and phase transition characteristics as compared to single-domain nanocrystals. In the presence of twin boundaries, the temperature for transition from the ordered phase to the high-copper-mobility superionic phase is depressed. Whereas the superionic phase is stable in the bulk only above ca. 100 °C, cuprous sulfide nanocrystals of ca. 7 nm diameter and a twinned structure are stable in the superionic phase well below ambient temperature. These findings demonstrate twinning to be a structural handle for nanoscale materials design and enable applications for an earth-abundant mineral in solid electrolytes for Li-S batteries. The ability to control the internal domain structure of a nanocrystal represents a new direction in nanomaterials design. Here, the authors develop a method to controllably introduce twin boundaries in cuprous sulfide nanocrystals, and find that twinning stabilizes these nanocrystals in the superionic phase well below room temperature.
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Affiliation(s)
- Jianxiao Gong
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Prashant K Jain
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA. .,Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA. .,Beckman Institute of Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA. .,Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.
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18
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Cho KH, Heo J, Sung YM, Jain PK. One-Dimensional Cuprous Selenide Nanostructures with Switchable Plasmonic and Super-ionic Phase Attributes. Angew Chem Int Ed Engl 2019; 58:8410-8415. [PMID: 31016822 DOI: 10.1002/anie.201902290] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 04/05/2019] [Indexed: 11/12/2022]
Abstract
Cuprous selenide nanocrystals have hallmark attributes, especially tunable localized surface plasmon resonances (LSPRs) and super-ionic behavior. These attributes of cuprous selenide are now integrated with a one-dimensional morphology. Essentially, Cu2 Se nanowires (NWs) of micrometer-scale lengths and about 10 nm diameter are prepared. The NWs exhibit a super-ionic phase that is stable at temperatures lower than in the bulk, owing to compressive lattice strain along the radial dimension of the NWs. The NWs can be switched between oxidized and reduced forms, which have contrasting phase transition and LSPR characteristics. This work thus makes available switchable, one-dimensional waveguides and ion-conducting channels.
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Affiliation(s)
- Ki-Hyun Cho
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Ave, Urbana, IL, 61801, USA
| | - Jaeyoung Heo
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Yun-Mo Sung
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Prashant K Jain
- Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Ave, Urbana, IL, 61801, USA.,Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.,Beckman Institute of Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA.,Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
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19
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Cho K, Heo J, Sung Y, Jain PK. One‐Dimensional Cuprous Selenide Nanostructures with Switchable Plasmonic and Super‐ionic Phase Attributes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201902290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ki‐Hyun Cho
- Department of ChemistryUniversity of Illinois at Urbana-Champaign 600 S. Mathews Ave Urbana IL 61801 USA
| | - Jaeyoung Heo
- Department of Materials Science and EngineeringUniversity of Illinois at Urbana-Champaign Urbana IL 61801 USA
| | - Yun‐Mo Sung
- Department of Materials Science and EngineeringKorea University Seoul 02841 Republic of Korea
| | - Prashant K. Jain
- Department of ChemistryUniversity of Illinois at Urbana-Champaign 600 S. Mathews Ave Urbana IL 61801 USA
- Materials Research LaboratoryUniversity of Illinois at Urbana-Champaign Urbana IL 61801 USA
- Beckman Institute of Advanced Science and TechnologyUniversity of Illinois at Urbana-Champaign Urbana IL 61801 USA
- Department of PhysicsUniversity of Illinois at Urbana-Champaign Urbana IL 61801 USA
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20
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In-situ electron microscopy mapping of an order-disorder transition in a superionic conductor. Nat Commun 2019; 10:1505. [PMID: 30944324 PMCID: PMC6447557 DOI: 10.1038/s41467-019-09502-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 03/13/2019] [Indexed: 11/08/2022] Open
Abstract
Solid-solid phase transitions are processes ripe for the discovery of correlated atomic motion in crystals. Here, we monitor an order-disorder transition in real-time in nanoparticles of the super-ionic solid, Cu2-xSe. The use of in-situ high-resolution transmission electron microscopy allows the spatiotemporal evolution of the phase transition within a single nanoparticle to be monitored at the atomic level. The high spatial resolution reveals that cation disorder is nucleated at low co-ordination, high energy sites of the nanoparticle where cationic vacancy layers intersect with surface facets. Time-dependent evolution of the reciprocal lattice of individual nanoparticles shows that the initiation of cation disorder is accompanied by a ~3% compression of the anionic lattice, establishing a correlation between these two structural features of the lattice. The spatiotemporal insights gained here advance understanding of order-disorder transitions, ionic structure and transport, and the role of nanoparticle surfaces in phase transitions.
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21
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Wang H, Butler DJ, Straus DB, Oh N, Wu F, Guo J, Xue K, Lee JD, Murray CB, Kagan CR. Air-Stable CuInSe 2 Nanocrystal Transistors and Circuits via Post-Deposition Cation Exchange. ACS NANO 2019; 13:2324-2333. [PMID: 30707549 DOI: 10.1021/acsnano.8b09055] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Colloidal semiconductor nanocrystals (NCs) are a promising materials class for solution-processable, next-generation electronic devices. However, most high-performance devices and circuits have been achieved using NCs containing toxic elements, which may limit their further device development. We fabricate high mobility CuInSe2 NC field-effect transistors (FETs) using a solution-based, post-deposition, sequential cation exchange process that starts with electronically coupled, thiocyanate (SCN)-capped CdSe NC thin films. First Cu+ is substituted for Cd2+ transforming CdSe NCs to Cu-rich Cu2Se NC films. Next, Cu2Se NC films are dipped into a Na2Se solution to Se-enrich the NCs, thus compensating the Cu-rich surface, promoting fusion of the Cu2Se NCs, and providing sites for subsequent In-dopants. The liquid-coordination-complex trioctylphosphine-indium chloride (TOP-InCl3) is used as a source of In3+ to partially exchange and n-dope CuInSe2 NC films. We demonstrate Al2O3-encapsulated, air-stable CuInSe2 NC FETs with linear (saturation) electron mobilities of 8.2 ± 1.8 cm2/(V s) (10.5 ± 2.4 cm2/(V s)) and with current modulation of 105, comparable to that for high-performance Cd-, Pb-, and As-based NC FETs. The CuInSe2 NC FETs are used as building blocks of integrated inverters to demonstrate their promise for low-cost, low-toxicity NC circuits.
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Affiliation(s)
| | | | | | - Nuri Oh
- Division of Materials Science and Engineering , Hanyang University , Seoul 133-791 , Republic of Korea
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22
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Dalgaard KJ, Eikeland EZ, Sist M, Iversen BB. Maximum Entropy Method Visualization of Disorder and Ion Migration in Thermoelectric Cu2-δSe. ADVANCED THEORY AND SIMULATIONS 2018. [DOI: 10.1002/adts.201800068] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kirstine J. Dalgaard
- Center for Materials Crystallography; Department of Chemistry and iNANO; Aaarhus University; DK-8000 Aarhus C Denmark
| | - Espen Z. Eikeland
- Center for Materials Crystallography; Department of Chemistry and iNANO; Aaarhus University; DK-8000 Aarhus C Denmark
| | - Mattia Sist
- Center for Materials Crystallography; Department of Chemistry and iNANO; Aaarhus University; DK-8000 Aarhus C Denmark
| | - Bo B. Iversen
- Center for Materials Crystallography; Department of Chemistry and iNANO; Aaarhus University; DK-8000 Aarhus C Denmark
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23
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Rettie AJE, Malliakas CD, Botana AS, Hodges JM, Han F, Huang R, Chung DY, Kanatzidis MG. Ag2Se to KAg3Se2: Suppressing Order–Disorder Transitions via Reduced Dimensionality. J Am Chem Soc 2018; 140:9193-9202. [DOI: 10.1021/jacs.8b04888] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alexander J. E. Rettie
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Christos D. Malliakas
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Antia S. Botana
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - James M. Hodges
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Fei Han
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
- HPSynC, Geophysical Laboratory, Carnegie Institution of Washington, Argonne, Illinois 60439, United States
| | - Ruiyun Huang
- Department of Materials Science, Northwestern University, Evanston, Illinois 60208, United States
| | - Duck Young Chung
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Mercouri G. Kanatzidis
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
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24
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Banerjee P, Jain PK. Lithiation of Copper Selenide Nanocrystals. Angew Chem Int Ed Engl 2018; 57:9315-9319. [DOI: 10.1002/anie.201803358] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 05/15/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Progna Banerjee
- Department of Physics University of Illinois at Urbana-Champaign Urbana IL 61801 USA
| | - Prashant K. Jain
- Department of Physics University of Illinois at Urbana-Champaign Urbana IL 61801 USA
- Department of Chemistry University of Illinois at Urbana-Champaign 600 Matthews Ave Urbana IL 61801 USA
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25
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26
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Dumett Torres D, Jain PK. Strain Stabilization of Superionicity in Copper and Lithium Selenides. J Phys Chem Lett 2018; 9:1200-1205. [PMID: 29461839 DOI: 10.1021/acs.jpclett.8b00236] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Superionic (SI) phases have utility as solid electrolytes for next generation battery technology, but these phases are typically not stable at room temperature. Our density functional theory calculations demonstrate that compressive lattice strain can stabilize SI phases of Cu2Se and Li2Se, two potential solid electrolytes. Electronic and bonding insights into this effect are obtained. In the ordered, non-SI phase, cations are localized primarily in tetrahedral (T) interstices with little access to the higher-energy octahedral (O) sites, but 1-2% compressive strain promotes attractive stabilization of the O cations with 6-fold coordination to Se anions, at the expense of the stability of 4-fold-coordinated T cations. In such compressed lattices, cations can access both T and O sites, resulting in a cation-disordered, SI phase. Thus, lattice strain is demonstrated as a handle for controlling ionic structure and transport and accomplishing ambient temperature superionicity.
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27
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Agrawal A, Cho SH, Zandi O, Ghosh S, Johns RW, Milliron DJ. Localized Surface Plasmon Resonance in Semiconductor Nanocrystals. Chem Rev 2018; 118:3121-3207. [PMID: 29400955 DOI: 10.1021/acs.chemrev.7b00613] [Citation(s) in RCA: 290] [Impact Index Per Article: 48.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Localized surface plasmon resonance (LSPR) in semiconductor nanocrystals (NCs) that results in resonant absorption, scattering, and near field enhancement around the NC can be tuned across a wide optical spectral range from visible to far-infrared by synthetically varying doping level, and post synthetically via chemical oxidation and reduction, photochemical control, and electrochemical control. In this review, we will discuss the fundamental electromagnetic dynamics governing light matter interaction in plasmonic semiconductor NCs and the realization of various distinctive physical properties made possible by the advancement of colloidal synthesis routes to such NCs. Here, we will illustrate how free carrier dielectric properties are induced in various semiconductor materials including metal oxides, metal chalcogenides, metal nitrides, silicon, and other materials. We will highlight the applicability and limitations of the Drude model as applied to semiconductors considering the complex band structures and crystal structures that predominate and quantum effects that emerge at nonclassical sizes. We will also emphasize the impact of dopant hybridization with bands of the host lattice as well as the interplay of shape and crystal structure in determining the LSPR characteristics of semiconductor NCs. To illustrate the discussion regarding both physical and synthetic aspects of LSPR-active NCs, we will focus on metal oxides with substantial consideration also of copper chalcogenide NCs, with select examples drawn from the literature on other doped semiconductor materials. Furthermore, we will discuss the promise that LSPR in doped semiconductor NCs holds for a wide range of applications such as infrared spectroscopy, energy-saving technologies like smart windows and waste heat management, biomedical applications including therapy and imaging, and optical applications like two photon upconversion, enhanced luminesence, and infrared metasurfaces.
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Affiliation(s)
- Ankit Agrawal
- McKetta Department of Chemical Engineering , The University of Texas at Austin , Austin , Texas 78712 , United States
| | - Shin Hum Cho
- McKetta Department of Chemical Engineering , The University of Texas at Austin , Austin , Texas 78712 , United States
| | - Omid Zandi
- McKetta Department of Chemical Engineering , The University of Texas at Austin , Austin , Texas 78712 , United States
| | - Sandeep Ghosh
- McKetta Department of Chemical Engineering , The University of Texas at Austin , Austin , Texas 78712 , United States
| | - Robert W Johns
- McKetta Department of Chemical Engineering , The University of Texas at Austin , Austin , Texas 78712 , United States.,Department of Chemistry , University of California Berkeley , Berkeley , California 94720 , United States
| | - Delia J Milliron
- McKetta Department of Chemical Engineering , The University of Texas at Austin , Austin , Texas 78712 , United States
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28
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Banerjee P, Jain PK. Mechanism of sulfidation of small zinc oxide nanoparticles. RSC Adv 2018; 8:34476-34482. [PMID: 35548607 PMCID: PMC9087119 DOI: 10.1039/c8ra06949b] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 10/04/2018] [Indexed: 11/22/2022] Open
Abstract
ZnO has industrial utility as a solid sorbent for the removal of polluting sulfur compounds from petroleum-based fuels. Small ZnO nanoparticles may be more effective in terms of sorption capacity and ease of sulfidation as compared to bulk ZnO. Motivated by this promise, here, we study the sulfidation of ZnO NPs and uncover the solid-state mechanism of the process by crystallographic and optical absorbance characterization. The wurtzite-structure ZnO NPs undergo complete sulfidation to yield ZnS NPs with a drastically different zincblende structure. However, in the early stages, the ZnO NP lattice undergoes only substitutional doping by sulfur, while retaining its wurtzite structure. Above a threshold sulfur-doping level of 30 mol%, separate zincblende ZnS grains nucleate, which grow at the expense of the ZnO NPs, finally yielding ZnS NPs. Thus, the full oxide to sulfide transformation cannot be viewed simply as a topotactic place-exchange of anions. The product ZnS NPs formed by nucleation-growth share neither the crystallographic structure nor the size of the initial ZnO NPs. The reaction mechanism may inform the future design of nanostructured ZnO sorbents. In the sulfidation of small ZnO nanoparticles, the nanoparticles first undergo sulfur doping followed by the nucleation-growth of ZnS domains.![]()
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Affiliation(s)
- Progna Banerjee
- Department of Physics
- University of Illinois at Urbana-Champaign
- Urbana
- USA
| | - Prashant K. Jain
- Department of Physics
- University of Illinois at Urbana-Champaign
- Urbana
- USA
- Department of Chemistry
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29
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Gariano G, Lesnyak V, Brescia R, Bertoni G, Dang Z, Gaspari R, De Trizio L, Manna L. Role of the Crystal Structure in Cation Exchange Reactions Involving Colloidal Cu 2Se Nanocrystals. J Am Chem Soc 2017. [PMID: 28644018 PMCID: PMC6105078 DOI: 10.1021/jacs.7b03706] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Stoichiometric Cu2Se nanocrystals were synthesized in either cubic or hexagonal (metastable) crystal structures and used as the host material in cation exchange reactions with Pb2+ ions. Even if the final product of the exchange, in both cases, was rock-salt PbSe nanocrystals, we show here that the crystal structure of the starting nanocrystals has a strong influence on the exchange pathway. The exposure of cubic Cu2Se nanocrystals to Pb2+ cations led to the initial formation of PbSe unselectively on the overall surface of the host nanocrystals, generating Cu2Se@PbSe core@shell nanoheterostructures. The formation of such intermediates was attributed to the low diffusivity of Pb2+ ions inside the host lattice and to the absence of preferred entry points in cubic Cu2Se. On the other hand, in hexagonal Cu2Se nanocrystals, the entrance of Pb2+ ions generated PbSe stripes "sandwiched" in between hexagonal Cu2Se domains. These peculiar heterostructures formed as a consequence of the preferential diffusion of Pb2+ ions through specific (a, b) planes of the hexagonal Cu2Se structure, which are characterized by almost empty octahedral sites. Our findings suggest that the morphology of the nanoheterostructures, formed upon partial cation exchange reactions, is intimately connected not only to the NC host material, but also to its crystal structure.
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Affiliation(s)
| | - Vladimir Lesnyak
- Physical Chemistry, TU Dresden , Bergstr. 66b, 01062 Dresden, Germany
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