1
|
Kimberly TQ, Frasch MH, Kauzlarich SM. Colloidal synthesis of two-dimensional nanocrystals by the polyol route. Dalton Trans 2024. [PMID: 39046257 DOI: 10.1039/d4dt01322k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
The field of 2D nanomaterials is ever-growing with a myriad of synthetic advancements that have been used to obtain such materials. There are top-down, as well as bottom-up, fabrication methods for obtaining 2D nanomaterials; however, synthesis of 2D nanomaterials from solution offers a simple scalable way to control size, shape, and surface. This review outlines the recent advances in colloidal polyol synthesis of 2D nanomaterials and provides perspectives on the similarities and differences in various syntheses. Various materials classes are presented and discussed, including metals, oxides, chalcogenides, and halides, that can be synthesized as 2D nanomaterials via a polyol process. Throughout the literature, polyol media is demonstrated to be versatile not only as a solvent and reducing agent for metal precursors but also as a binding and shape-directing agent for many 2D nanomaterials. Polyols also offer the ability to dissolve various surfactants and additives that can further control the morphology and composition of various nanomaterials. In this review, we outline the various 2D materials that have been realized via the solution polyol route.
Collapse
Affiliation(s)
- Tanner Q Kimberly
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, USA.
| | - Michelle H Frasch
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, USA.
| | - Susan M Kauzlarich
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, USA.
| |
Collapse
|
2
|
Liu Z, Guo K, Yan L, Zhang K, Wang Y, Ding X, Zhao N, Xu FJ. Janus nanoparticles targeting extracellular polymeric substance achieve flexible elimination of drug-resistant biofilms. Nat Commun 2023; 14:5132. [PMID: 37612285 PMCID: PMC10447547 DOI: 10.1038/s41467-023-40830-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 08/14/2023] [Indexed: 08/25/2023] Open
Abstract
Safe and efficient antibacterial materials are urgently needed to combat drug-resistant bacteria and biofilm-associated infections. The rational design of nanoparticles for flexible elimination of biofilms remains challenging. Herein, we propose the fabrication of Janus-structured nanoparticles targeting extracellular polymeric substance to achieve dispersion or near-infrared (NIR) light-activated photothermal elimination of drug-resistant biofilms, respectively. Asymmetrical Janus-structured dextran-bismuth selenide (Dex-BSe) nanoparticles are fabricated to exploit synergistic effects of both components. Interestingly, Janus Dex-BSe nanoparticles realize enhanced dispersal of biofilms over time. Alternatively, taking advantage of the preferential accumulation of nanoparticles at infection sites, the self-propelled active motion induced by the unique Janus structure enhances photothermal killing effect. The flexible application of Janus Dex-BSe nanoparticles for biofilm removal or NIR-triggered eradication in vivo is demonstrated by Staphylococcus aureus-infected mouse excisional wound model and abscess model, respectively. The developed Janus nanoplatform holds great promise for the efficient elimination of drug-resistant biofilms in diverse antibacterial scenarios.
Collapse
Affiliation(s)
- Zhiwen Liu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
- Key Laboratory of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing, 100029, China
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Kangli Guo
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
- Key Laboratory of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing, 100029, China
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Liemei Yan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
- Key Laboratory of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing, 100029, China
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Kai Zhang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
- Key Laboratory of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing, 100029, China
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Ying Wang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
- Key Laboratory of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing, 100029, China
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Xiaokang Ding
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
- Key Laboratory of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing, 100029, China
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Nana Zhao
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
- Key Laboratory of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing, 100029, China.
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Fu-Jian Xu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
- Key Laboratory of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing, 100029, China.
- Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China.
| |
Collapse
|
3
|
Yuan Z, Zhao X, Wang C, Hang S, Li M, Liu Y. Exploring Material Properties and Device Output Performance of a Miniaturized Flexible Thermoelectric Generator Using Scalable Synthesis of Bi 2Se 3 Nanoflakes. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1937. [PMID: 37446453 DOI: 10.3390/nano13131937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/09/2023] [Accepted: 06/21/2023] [Indexed: 07/15/2023]
Abstract
Environmental heat-to-electric energy conversion presents a promising solution for powering sensors in wearable and portable devices. However, the availability of near-room temperature thermoelectric (TE) materials is highly limited, posing a significant challenge in this field. Bi2Se3, as a room-temperature TE material, has attracted much attention. Here, we demonstrate a large-scale synthesis of Bi2Se3 nanoflakes used for the microflexible TE generator. A high-performance micro-TE generator module, utilizing a flexible printed circuit, has been designed and fabricated through the process of screen printing. The TE generator configuration comprises five pairs of PN TE legs. The p-type TE leg utilizes commercially available Sb2Te3 powder, while the n-type TE leg employs Bi2Se3 nanoflakes synthesized in this study. For comparative purposes, we also incorporate commercially available Bi2Se3 powder as an alternative n-type TE leg. The optimal performance of the single-layer microflexible TE generator, employing Bi2Se3 nanoflakes as the active material, is achieved when operating at a temperature differential of 109.5 K, the open-circuit voltage (VOC) is 0.11 V, the short circuit current (ISC) is 0.34 mA, and the maximum output power (PMAX) is 9.5 μW, much higher than the generator consisting of commercial Bi2Se3 powder, which is expected to provide an energy supply for flexible electronic devices.
Collapse
Affiliation(s)
- Zicheng Yuan
- Reactor Engineering Sub-Institute, Nuclear Power Institute of China, Chengdu 610213, China
| | - Xueke Zhao
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China
| | - Canhui Wang
- Reactor Engineering Sub-Institute, Nuclear Power Institute of China, Chengdu 610213, China
| | - Shuang Hang
- Inter-University Institute for High Energies, Université Libre de Bruxelles, 1050 Brussels, Belgium
| | - Mengyao Li
- Inter-University Institute for High Energies, Université Libre de Bruxelles, 1050 Brussels, Belgium
| | - Yu Liu
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
| |
Collapse
|
4
|
Zhang C, Li Q, Shan J, Xing J, Liu X, Ma Y, Qian H, Chen X, Wang X, Wu LM, Yu Y. Multifunctional two-dimensional Bi 2Se 3 nanodiscs for anti-inflammatory therapy of inflammatory bowel diseases. Acta Biomater 2023; 160:252-264. [PMID: 36805534 DOI: 10.1016/j.actbio.2023.02.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 02/06/2023] [Accepted: 02/08/2023] [Indexed: 02/18/2023]
Abstract
The overexpression of reactive oxygen and nitrogen species (RONS) in the colonic mucosa destroys the mucosa and its barrier, accelerating the occurrence of inflammatory bowel disease (IBD). The elimination of RONS from the inflammatory colon has proven effective in alleviating IBD. Although many nanoantioxidants have been developed, preparing robust and efficient nano-antioxidants remains challenging. Herein, by modifying bismuth selenide (Bi2Se3) nanodiscs with polyvinylpyrrolidone (PVP), a multifunctional nanozyme based on 2D nanomaterials was developed for the treatment of IBD. By eliminating multiple RONS, such as hydroxyl radicals (•OH), superoxide anions (O2-•), nitric oxide (NO), and Bi2Se3 nanodiscs enhanced cellular survival after H2O2 stimulation. As evidenced by colonic injury, reduced body weight, spleen index, and proinflammatory cytokine levels in mice, RONS clearance alleviated intestinal inflammation in a prevention and delay model of acute colitis. 16S rDNA amplicon sequencing reveals that Bi2Se3 nanodiscs had the potential to regulate intestinal flora, increase the proportion of Firmicutes to Bacteroidetes, inhibit Proteobacteria bacteria, and restore intestinal homeostasis. This study highlights the use of Bi2Se3 nanodiscs with excellent biocompatibility, multienzyme functionality, and RONS scavenging ability as treatments for IBD without apparent adverse effects. STATEMENT OF SIGNIFICANCE: RONS were efficiently scavenged by Bi2Se3 nanodiscs. Bi2Se3 nanodiscs could be as a promising and potentially safe theraeputic agent for IBD. The gut microbiota could be modulated by Bi2Se3 nanodiscs.
Collapse
Affiliation(s)
- Cong Zhang
- Division of Gastroenterology, Division of Life Science and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, Anhui 230026, China; School of Biomedical Engineering, Research and Engineering Center of Biomedical Materials, Anhui Provincial Institute of Translational Medicine, Anhui Medical University, Hefei 230032, China
| | - Qingrong Li
- Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei 230032, China
| | - Jie Shan
- Department of Burns, The First Affiliated Hospital of Anhui Medical University, Hefei 230032, China
| | - Jianghao Xing
- Department of Oncology, The First Affiliated Hospital of Anhui Medical University, Hefei 230032, China
| | - Xiaoyan Liu
- Division of Gastroenterology, Division of Life Science and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yan Ma
- School of Biomedical Engineering, Research and Engineering Center of Biomedical Materials, Anhui Provincial Institute of Translational Medicine, Anhui Medical University, Hefei 230032, China
| | - Haisheng Qian
- School of Biomedical Engineering, Research and Engineering Center of Biomedical Materials, Anhui Provincial Institute of Translational Medicine, Anhui Medical University, Hefei 230032, China
| | - Xulin Chen
- Department of Burns, The First Affiliated Hospital of Anhui Medical University, Hefei 230032, China
| | - Xianwen Wang
- School of Biomedical Engineering, Research and Engineering Center of Biomedical Materials, Anhui Provincial Institute of Translational Medicine, Anhui Medical University, Hefei 230032, China.
| | - Lian-Ming Wu
- Department of Radiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China.
| | - Yue Yu
- Division of Gastroenterology, Division of Life Science and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei, Anhui 230026, China.
| |
Collapse
|
5
|
Liu L, Bai B, Yang X, Du Z, Jia G. Anisotropic Heavy-Metal-Free Semiconductor Nanocrystals: Synthesis, Properties, and Applications. Chem Rev 2023; 123:3625-3692. [PMID: 36946890 DOI: 10.1021/acs.chemrev.2c00688] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
Heavy-metal (Cd, Hg, and Pb)-containing semiconductor nanocrystals (NCs) have been explored widely due to their unique optical and electrical properties. However, the toxicity risks of heavy metals can be a drawback of heavy-metal-containing NCs in some applications. Anisotropic heavy-metal-free semiconductor NCs are desirable replacements and can be realized following the establishment of anisotropic growth mechanisms. These anisotropic heavy-metal-free semiconductor NCs can possess lower toxicity risks, while still exhibiting unique optical and electrical properties originating from both the morphological and compositional anisotropy. As a result, they are promising light-emitting materials in use various applications. In this review, we provide an overview on the syntheses, properties, and applications of anisotropic heavy-metal-free semiconductor NCs. In the first section, we discuss hazards of heavy metals and introduce the typical heavy-metal-containing and heavy-metal-free NCs. In the next section, we discuss anisotropic growth mechanisms, including solution-liquid-solid (SLS), oriented attachment, ripening, templated-assisted growth, and others. We discuss mechanisms leading both to morphological anisotropy and to compositional anisotropy. Examples of morphological anisotropy include growth of nanorods (NRs)/nanowires (NWs), nanotubes, nanoplatelets (NPLs)/nanosheets, nanocubes, and branched structures. Examples of compositional anisotropy, including heterostructures and core/shell structures, are summarized. Third, we provide insights into the properties of anisotropic heavy-metal-free NCs including optical polarization, fast electron transfer, localized surface plasmon resonances (LSPR), and so on, which originate from the NCs' anisotropic morphologies and compositions. Finally, we summarize some applications of anisotropic heavy-metal-free NCs including catalysis, solar cells, photodetectors, lighting-emitting diodes (LEDs), and biological applications. Despite the huge progress on the syntheses and applications of anisotropic heavy-metal-free NCs, some issues still exist in the novel anisotropic heavy-metal-free NCs and the corresponding energy conversion applications. Therefore, we also discuss the challenges of this field and provide possible solutions to tackle these challenges in the future.
Collapse
Affiliation(s)
- Long Liu
- Key Lab for Special Functional Materials, Ministry of Education, National and Local Joint Engineering Research Center for High-Efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China
| | - Bing Bai
- Key Lab for Special Functional Materials, Ministry of Education, National and Local Joint Engineering Research Center for High-Efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China
| | - Xuyong Yang
- Key Laboratory of Advanced Display and System Applications of Ministry of Education, Shanghai University, 149 Yanchang Road, Shanghai 200072, P. R. China
| | - Zuliang Du
- Key Lab for Special Functional Materials, Ministry of Education, National and Local Joint Engineering Research Center for High-Efficiency Display and Lighting Technology, School of Materials Science and Engineering, and Collaborative Innovation Center of Nano Functional Materials and Applications, Henan University, Kaifeng 475004, China
| | - Guohua Jia
- School of Molecular and Life Sciences, Curtin University, Perth, WA 6102, Australia
| |
Collapse
|
6
|
Giri A, Park G, Jeong U. Layer-Structured Anisotropic Metal Chalcogenides: Recent Advances in Synthesis, Modulation, and Applications. Chem Rev 2023; 123:3329-3442. [PMID: 36719999 PMCID: PMC10103142 DOI: 10.1021/acs.chemrev.2c00455] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The unique electronic and catalytic properties emerging from low symmetry anisotropic (1D and 2D) metal chalcogenides (MCs) have generated tremendous interest for use in next generation electronics, optoelectronics, electrochemical energy storage devices, and chemical sensing devices. Despite many proof-of-concept demonstrations so far, the full potential of anisotropic chalcogenides has yet to be investigated. This article provides a comprehensive overview of the recent progress made in the synthesis, mechanistic understanding, property modulation strategies, and applications of the anisotropic chalcogenides. It begins with an introduction to the basic crystal structures, and then the unique physical and chemical properties of 1D and 2D MCs. Controlled synthetic routes for anisotropic MC crystals are summarized with example advances in the solution-phase synthesis, vapor-phase synthesis, and exfoliation. Several important approaches to modulate dimensions, phases, compositions, defects, and heterostructures of anisotropic MCs are discussed. Recent significant advances in applications are highlighted for electronics, optoelectronic devices, catalysts, batteries, supercapacitors, sensing platforms, and thermoelectric devices. The article ends with prospects for future opportunities and challenges to be addressed in the academic research and practical engineering of anisotropic MCs.
Collapse
Affiliation(s)
- Anupam Giri
- Department of Chemistry, Faculty of Science, University of Allahabad, Prayagraj, UP-211002, India
| | - Gyeongbae Park
- Department of Materials Science and Engineering, Pohang University of Science and Technology, Cheongam-Ro 77, Nam-Gu, Pohang, Gyeongbuk790-784, Korea.,Functional Materials and Components R&D Group, Korea Institute of Industrial Technology, Gwahakdanji-ro 137-41, Sacheon-myeon, Gangneung, Gangwon-do25440, Republic of Korea
| | - Unyong Jeong
- Department of Materials Science and Engineering, Pohang University of Science and Technology, Cheongam-Ro 77, Nam-Gu, Pohang, Gyeongbuk790-784, Korea
| |
Collapse
|
7
|
Yakovlev DS, Lvov DS, Emelyanova OV, Dzhumaev PS, Shchetinin IV, Skryabina OV, Egorov SV, Ryazanov VV, Golubov AA, Roditchev D, Stolyarov VS. Physical Vapor Deposition Features of Ultrathin Nanocrystals of Bi 2(Te xSe 1-x) 3. J Phys Chem Lett 2022; 13:9221-9231. [PMID: 36170663 DOI: 10.1021/acs.jpclett.2c02664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Structural and electronic properties of ultrathin nanocrystals of chalcogenide Bi2(Tex Se1-x)3 were studied. The nanocrystals were formed from the parent compound Bi2Te2Se on as-grown and thermally oxidized Si(100) substrates using Ar-assisted physical vapor deposition, resulting in well-faceted single crystals several quintuple layers thick and a few hundreds nanometers large. The chemical composition and structure of the nanocrystals were analyzed by energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, electron backscattering, and X-ray diffraction. The electron transport through nanocrystals connected to superconducting Nb electrodes demonstrated Josephson behavior, with the predominance of the topological channels [Stolyarov et al. Commun. Mater., 2020, 1, 38]. The present paper focuses on the effect of the growth conditions on the morphology, structural, and electronic properties of nanocrystals.
Collapse
Affiliation(s)
- Dmitry S Yakovlev
- Center for Advanced Mesoscience and Nanotechnology, Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region 141700, Russia
- Russian Quantum Center, Skolkovo, Moscow Region 143025, Russia
| | - Dmitry S Lvov
- Institute of Solid State Physics RAS, Chernogolovka, Moscow Region 142432, Russia
| | | | - Pave S Dzhumaev
- National Research Nuclear University MEPhI, Moscow 115409, Russia
| | - Igor V Shchetinin
- National University of Science and Technology MISIS, Moscow 119049, Russia
| | - Olga V Skryabina
- Center for Advanced Mesoscience and Nanotechnology, Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region 141700, Russia
- Institute of Solid State Physics RAS, Chernogolovka, Moscow Region 142432, Russia
- National University of Science and Technology MISIS, Moscow 119049, Russia
| | - Sergey V Egorov
- Russian Quantum Center, Skolkovo, Moscow Region 143025, Russia
- Institute of Solid State Physics RAS, Chernogolovka, Moscow Region 142432, Russia
| | - Valery V Ryazanov
- Russian Quantum Center, Skolkovo, Moscow Region 143025, Russia
- Institute of Solid State Physics RAS, Chernogolovka, Moscow Region 142432, Russia
- National University of Science and Technology MISIS, Moscow 119049, Russia
| | - Alexander A Golubov
- Faculty of Science and Technology, MESA+ Institute of Nanotechnology, Enschede 7500 AE, The Netherlands
| | - Dimitri Roditchev
- Laboratoire de Physique et d'Étude des Matériaux (LPEM), UMR-8213, ESPCI Paris, PSL Research University, CNRS, Sorbonne Université, Paris 75005, France
| | - Vasily S Stolyarov
- Center for Advanced Mesoscience and Nanotechnology, Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region 141700, Russia
- National University of Science and Technology MISIS, Moscow 119049, Russia
- Dukhov Research Institute of Automatics (VNIIA), Moscow 127055, Russia
| |
Collapse
|
8
|
Park S, Choi H, Hwang GT, Peddigari M, Ahn CW, Hahn BD, Yoon WH, Lee JW, Park KI, Jang J, Choi JJ, Min Y. Molten-Salt Processed Potassium Sodium Niobate Single-Crystal Microcuboids with Dislocation-Induced Nanodomain Structures and Relaxor Ferroelectric Behavior. ACS NANO 2022; 16:15328-15338. [PMID: 36074084 DOI: 10.1021/acsnano.2c06919] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
We herein report a facile molten-salt synthetic strategy to prepare transparent and uniform Li, Ba-doped (K,Na)NbO3 (KNN) single-crystal microcuboids (∼80 μm). By controlling the degree of supersaturation, different growth modes were found and the single-crystal microcuboids were synthesized via island-like oriented attachment of KNN particles onto the growing surface. The distinct relaxor ferroelectric (RFE) properties were achieved in the single-crystal microcuboids, which were different from the normal ferroelectric (FE) properties found in their KNN ceramic counterparts prepared through a solid-state reaction using the same initial precursors. The RFE properties were realized by dislocation-induced nanodomain formation during oriented attachment growth of single-crystal microcuboids, which is different from the current strategies to derive the nanodomains by the local compositional inhomogeneity or the application of an electric field. The dislocations served as nucleation sites for ferroelectric domain walls and block the growth of domains. The KNN single-crystal microcuboids exhibited a higher effective piezoelectric coefficient (∼459 pm/V) compared to that of the bulk KNN ceramic counterpart (∼90 pm/V) and showed the broad diffuse maxima in the temperature dependence dielectric permittivity. The high maximum polarization (69.6 μC/cm2) at a relatively low electric field (30 kV/cm) was beneficial for energy storage applications. Furthermore, the KNN-based transparent, flexible pressure sensor directly monitored the mechanical motion of human activity without any external electric power. This study provides insights and synthetic strategies of single-crystal RFE microcuboids for other different perovskites, in which nanodomain structures are primarily imposed by their chemical composition.
Collapse
Affiliation(s)
- Seonhwa Park
- Department of Functional Ceramics, Ceramic Materials Division, Korea Institute of Materials Science (KIMS), Changwon, Gyeongnam 51508, Korea
- Department of Materials Science and Engineering, Pusan National University, Busan 46241, Korea
| | - Hyunsu Choi
- Department of Materials Science and Engineering, Pukyong National University, Busan 48513, Korea
| | - Geon-Tae Hwang
- Department of Materials Science and Engineering, Pukyong National University, Busan 48513, Korea
| | - Mahesh Peddigari
- Department of Functional Ceramics, Ceramic Materials Division, Korea Institute of Materials Science (KIMS), Changwon, Gyeongnam 51508, Korea
| | - Cheol-Woo Ahn
- Department of Functional Ceramics, Ceramic Materials Division, Korea Institute of Materials Science (KIMS), Changwon, Gyeongnam 51508, Korea
| | - Byung-Dong Hahn
- Department of Functional Ceramics, Ceramic Materials Division, Korea Institute of Materials Science (KIMS), Changwon, Gyeongnam 51508, Korea
| | - Woon-Ha Yoon
- Department of Functional Ceramics, Ceramic Materials Division, Korea Institute of Materials Science (KIMS), Changwon, Gyeongnam 51508, Korea
| | - Jung Woo Lee
- Department of Materials Science and Engineering, Pusan National University, Busan 46241, Korea
| | - Kwi-Il Park
- School of Materials Science and Engineering, Kyungpook National University, Daegu 41566, Korea
| | - Jongmoon Jang
- Department of Functional Ceramics, Ceramic Materials Division, Korea Institute of Materials Science (KIMS), Changwon, Gyeongnam 51508, Korea
| | - Jong-Jin Choi
- Department of Functional Ceramics, Ceramic Materials Division, Korea Institute of Materials Science (KIMS), Changwon, Gyeongnam 51508, Korea
| | - Yuho Min
- School of Materials Science and Engineering, Kyungpook National University, Daegu 41566, Korea
| |
Collapse
|
9
|
Ju Z, Crawford C, Adamczyk J, Toberer ES, Kauzlarich SM. Study of the Thermoelectric Properties of Bi 2Te 3/Sb 2Te 3 Core-Shell Heterojunction Nanostructures. ACS APPLIED MATERIALS & INTERFACES 2022; 14:24886-24896. [PMID: 35580304 DOI: 10.1021/acsami.2c03011] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Thermoelectric materials convert heat energy into electricity, hold promising capabilities for energy waste harvesting, and may be the future of sustainable energy utilization. In this work, we successfully synthesized core-shell Bi2Te3/Sb2Te3 (BTST) nanostructured heterojunctions via a two-step solution route. Samples with different Bi2Te3 core to Sb2Te3 shell ratios could be synthesized by controlling the reaction precursors. Scanning electron microscopy images show well-defined hexagonal nanoplates and the distinct interfaces between Bi2Te3 and Sb2Te3. The similarity of the area ratios with the precursor ratios indicates that the growth of the Sb2Te3 shell mostly took place on the lateral direction rather than the vertical. Transmission electron microscopy revealed the crystalline nature of the as-synthesized Bi2Te3 core and Sb2Te3 shell. Energy-dispersive X-ray spectroscopy verified the lateral growth of a Sb2Te3 shell on the Bi2Te3 core. Thermoelectric properties were measured on pellets obtained from powders via spark plasma sintering with two different directions, in-plane and out-of-plane, showing anisotropic properties due to the nanostructure alignment in the pellets. All samples showed a degenerate semiconducting character with the electrical resistivity increasing with the temperature. Starting from Sb2Te3, the electrical resistivity increases with the increase in amounts of Bi2Te3. Thermal conductivity is lowered due to the increase in interfaces and additional phonon scattering. We show that the out-of-plane direction of the BTST 1-3 sample (where 1-3 indicates the ratio of BT to ST) demonstrates a high Seebeck value of 145 μV/K at 500 K which may be attributed to an energy filtering effect across the heterojunction interfaces. The highest overall zT is observed for the BTST 1-3 sample in the out-of-plane direction at 500 K. The zT values increase continuously over the measured temperature range, indicating a probable higher value at increased temperatures.
Collapse
Affiliation(s)
- Zheng Ju
- Department of Chemistry, University of California Davis, One Shields Avenue, Davis, California 95616, United States
| | - Caitlin Crawford
- Department of Physics, Colorado School of Mines, 1500 Illinois Street, Golden, Colorado 80401, United States
| | - Jesse Adamczyk
- Department of Physics, Colorado School of Mines, 1500 Illinois Street, Golden, Colorado 80401, United States
| | - Eric S Toberer
- Department of Physics, Colorado School of Mines, 1500 Illinois Street, Golden, Colorado 80401, United States
| | - Susan M Kauzlarich
- Department of Chemistry, University of California Davis, One Shields Avenue, Davis, California 95616, United States
| |
Collapse
|
10
|
Filling the gap between topological insulator nanomaterials and triboelectric nanogenerators. Nat Commun 2022; 13:938. [PMID: 35177614 PMCID: PMC8854595 DOI: 10.1038/s41467-022-28575-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 01/19/2022] [Indexed: 11/08/2022] Open
Abstract
Reliable energy modules and higher-sensitivity, higher-density, lower-powered sensing systems are constantly required to develop wearable electronics and the Internet of Things technology. As an emerging technology, triboelectric nanogenerators have been potentially guiding the landscape of sustainable power units and energy-efficient sensors. However, the existing triboelectric series is primarily populated by polymers and rubbers, limiting triboelectric sensing plasticity to some extent owing to their stiff surface electronic structures. To enrich the current triboelectric group, we explore the triboelectric properties of the topological insulator nanofilm by Kelvin probe force microscopy and reveal its relatively positive electrification charging performance. Both the larger surface potential difference and the conductive surface states of the nanofilms synergistically improve the charge transfer behavior between the selected triboelectric media, endowing the topological insulator-based triboelectric nanogenerator with considerable output performance. Besides serving as a wearable power source, the ultra-compact device array demonstrates innovative system-level sensing capabilities, including precise monitoring of dynamic objects and real-time signal control at the human-machine interface. This work fills the blank between topological quantum matters and triboelectric nanogenerators and, more importantly, exploits the significant potential of topological insulator nanofilms for self-powered flexible/wearable electronics and scalable sensing technologies.
Collapse
|
11
|
Hwang W, Yoo SH, Soon A, Jang W. Going beyond the equilibrium crystal shape: re-tracing the morphological evolution in group 5 tetradymite nanocrystals. NANOSCALE 2021; 13:15721-15730. [PMID: 34524344 DOI: 10.1039/d1nr04793k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Nanocrystals of group 5 tetradymites M2X3 (where M = Bi and Sb, X = Se and Te) are of high technological relevance in modern topological nanoelectronics. However, there is a current lack of a systematic understanding to predict the preferred nanocrystal morphology in experiments where commonly-used equilibrium thermodynamic models appear to fail. In this work, using first-principles DFT calculations with a rationally-extended ab initio atomistic thermodynamics approach coupled to implicit solvation models and Gibbs-Wulff shape constructions, we demonstrate that this absence of predictive power stems from the limitation of equilibrium thermodynamics. By re-tracing and carefully addressing with a more realistic chemical potential definition, we illustrate this shortcoming can be overcome and afford a more rational route to size-engineer and shape-design highly-functional group 5 tetradymite nanoparticles for targeted applications.
Collapse
Affiliation(s)
- Woohyun Hwang
- Department of Materials Science & Engineering and Center for Artificial Synesthesia Materials Discovery, Yonsei University, Seoul 03722, Republic of Korea.
| | - Su-Hyun Yoo
- Department of Computational Materials Design, Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Straße 1, 40237, Düsseldorf, Germany
| | - Aloysius Soon
- Department of Materials Science & Engineering and Center for Artificial Synesthesia Materials Discovery, Yonsei University, Seoul 03722, Republic of Korea.
- School of Physics, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Woosun Jang
- Department of Materials Science & Engineering and Center for Artificial Synesthesia Materials Discovery, Yonsei University, Seoul 03722, Republic of Korea.
| |
Collapse
|
12
|
Chen S, Tao WL, Zhou Y, Zeng ZY, Chen XR, Geng HY. Novel thermoelectric performance of 2D 1T- Se 2Te and SeTe 2with ultralow lattice thermal conductivity but high carrier mobility. NANOTECHNOLOGY 2021; 32:455401. [PMID: 34348253 DOI: 10.1088/1361-6528/ac1a91] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Accepted: 08/02/2021] [Indexed: 06/13/2023]
Abstract
The design and search for efficient thermoelectric materials that can directly convert waste heat into electricity have been of great interest in recent years since they have practical applications in overcoming the challenges of global warming and the energy crisis. In this work, two new two-dimensional 1T-phase group-VI binary compounds Se2Te and SeTe2with outstanding thermoelectric performances are predicted using first-principles calculations combined with Boltzmann transport theory. The dynamic stability is confirmed based on phonon dispersion. It is found that the spin-orbit coupling effect has a significant impact on the band structure of SeTe2, and induces a transformation from indirect to direct band gap. The electronic and phononic transport properties of the Se2Te and SeTe2monolayer are calculated and discussed. High carrier mobility (up to 3744.321 and 2295.413 cm2V-1S-1for electron and hole, respectively) is exhibited, suggesting great applications in nanoelectronic devices. Furthermore, the maximum thermoelectric figure of meritzTof SeTe2for n-type and p-type is 2.88, 1.99 and 5.94, 3.60 at 300 K and 600 K, respectively, which is larger than that of most reported 2D thermoelectric materials. The surprising thermoelectric properties arise from the ultralow lattice thermal conductivitykl(0.25 and 1.89 W m-1K-1for SeTe2and Se2Te at 300 K), and the origin of ultralow lattice thermal conductivity is revealed. The present results suggest that 1T-phase Se2Te and SeTe2monolayer are promising candidates for thermoelectric applications.
Collapse
Affiliation(s)
- ShaoBo Chen
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, People's Republic of China
- College of Electronic and Information Engineering, Anshun University, Anshun 561000, People's Republic of China
| | - Wang-Li Tao
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, People's Republic of China
| | - Yu Zhou
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, People's Republic of China
| | - Zhao-Yi Zeng
- College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 400047, People's Republic of China
| | - Xiang-Rong Chen
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, People's Republic of China
| | - Hua-Yun Geng
- National Key Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, CAEP, Mianyang 621900, People's Republic of China
| |
Collapse
|
13
|
Enhanced Thermoelectric Performance of n-Type Bi 2Se 3 Nanosheets through Sn Doping. NANOMATERIALS 2021; 11:nano11071827. [PMID: 34361214 PMCID: PMC8308202 DOI: 10.3390/nano11071827] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/03/2021] [Accepted: 07/12/2021] [Indexed: 11/17/2022]
Abstract
The cost-effective conversion of low-grade heat into electricity using thermoelectric devices requires developing alternative materials and material processing technologies able to reduce the currently high device manufacturing costs. In this direction, thermoelectric materials that do not rely on rare or toxic elements such as tellurium or lead need to be produced using high-throughput technologies not involving high temperatures and long processes. Bi2Se3 is an obvious possible Te-free alternative to Bi2Te3 for ambient temperature thermoelectric applications, but its performance is still low for practical applications, and additional efforts toward finding proper dopants are required. Here, we report a scalable method to produce Bi2Se3 nanosheets at low synthesis temperatures. We studied the influence of different dopants on the thermoelectric properties of this material. Among the elements tested, we demonstrated that Sn doping resulted in the best performance. Sn incorporation resulted in a significant improvement to the Bi2Se3 Seebeck coefficient and a reduction in the thermal conductivity in the direction of the hot-press axis, resulting in an overall 60% improvement in the thermoelectric figure of merit of Bi2Se3.
Collapse
|
14
|
Jia S, Song C, Xu M, Bai B, Liu J, Rong H, Zhang J. Cation Exchange Enabled Cu Dopants Location Tailoring and Photoelectric Properties Regulation in CdS Nanosheets. J Phys Chem Lett 2021; 12:3976-3982. [PMID: 33876935 DOI: 10.1021/acs.jpclett.1c00850] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Doping-related point defect engineering in low-dimensional semiconductor nanostructures is important to regulate their optical and electronic properties. The substitutional or interstitial location of heterovalent dopants is critical and has not been controlled effectively yet. Herein, we carefully control the kinetics of reverse cation exchange between CuxS 2D nanosheets and ligand-coordinated Cd2+ cations to control the Cu doping sites in CdS nanosheets (NSs). The substitutional and interstitial Cu dopants were directly confirmed by spherical aberration-corrected TEM (SACTEM) and their X-ray absorption spectroscopy (XAS) coordination investigation. Density functional theory (DFT) calculations and their experimental conductivities and dopant luminescence performance demonstrated the dramatic differences that are due to the location of different Cu dopants. These findings provide deeper insights on dopants' location regulation in a nanostructured host semiconductor.
Collapse
Affiliation(s)
- Shuman Jia
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Changsheng Song
- Key Laboratory of Optical Field Manipulation of Zhejiang Province, Department of Physics, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
| | - Meng Xu
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Bing Bai
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Jiajia Liu
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Hongpan Rong
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Jiatao Zhang
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| |
Collapse
|
15
|
Zhang YX, Zhu YK, Song DS, Feng J, Ge ZH. Excellent thermoelectric performance achieved in Bi 2Te 3/Bi 2S 3@Bi nanocomposites. Chem Commun (Camb) 2021; 57:2555-2558. [PMID: 33585847 DOI: 10.1039/d1cc00119a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Bi2Te3/Bi2S3@Bi nanocomposite with a network microstructure was successfully synthesized via a hydrothermal method and spark plasma sintering. This composite was constructed from Bi2Te3 nanoparticles and Bi2S3@Bi nanowires, and its network structure is beneficial for obtaining excellent thermoelectric performance. A ZT peak of 1.2 at 450 K was realized for the nanocomposite sample.
Collapse
Affiliation(s)
- Yi-Xin Zhang
- Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, China.
| | - Yu-Ke Zhu
- Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, China.
| | - Dong-Sheng Song
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich, Jülich 52425, Germany
| | - Jing Feng
- Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, China.
| | - Zhen-Hua Ge
- Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, China.
| |
Collapse
|
16
|
Bauer C, Veremchuk I, Kunze C, Benad A, Dzhagan VM, Haubold D, Pohl D, Schierning G, Nielsch K, Lesnyak V, Eychmüller A. Heterostructured Bismuth Telluride Selenide Nanosheets for Enhanced Thermoelectric Performance. SMALL SCIENCE 2020. [DOI: 10.1002/smsc.202000021] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Christoph Bauer
- Physical Chemistry TU Dresden Zellescher Weg 19 01069 Dresden Germany
| | - Igor Veremchuk
- Max Planck Institute of Chemical Physics of Solids Nöthnitzer Str. 40 01187 Dresden Germany
| | - Christof Kunze
- Physical Chemistry TU Dresden Zellescher Weg 19 01069 Dresden Germany
| | - Albrecht Benad
- Physical Chemistry TU Dresden Zellescher Weg 19 01069 Dresden Germany
| | - Volodymyr M. Dzhagan
- Semiconductor Physics Chemnitz University of Technology Reichenhainer Str. 70 09126 Chemnitz Germany
- Institute of Semiconductor Physics National Academy of Sciences of Ukraine Nauky av. 45 03028 Kyiv Ukraine
| | - Danny Haubold
- Physical Chemistry TU Dresden Zellescher Weg 19 01069 Dresden Germany
| | - Darius Pohl
- Dresden Center for Nanoanalysis TU Dresden Helmholtzstraße 18 01069 Dresden Germany
| | - Gabi Schierning
- Leibniz Institute for Solid State and Materials Research Dresden Helmholtzstraße 20 01069 Dresden Germany
| | - Kornelius Nielsch
- Leibniz Institute for Solid State and Materials Research Dresden Helmholtzstraße 20 01069 Dresden Germany
- Institute of Applied Physics TU Dresden Nöthnitzer Str. 61 01187 Dresden Germany
- Institute of Materials Science TU Dresden Helmholtzstr. 7 01069 Dresden Germany
| | - Vladimir Lesnyak
- Physical Chemistry TU Dresden Zellescher Weg 19 01069 Dresden Germany
| | | |
Collapse
|
17
|
Li D, Gong Y, Chen Y, Lin J, Khan Q, Zhang Y, Li Y, Zhang H, Xie H. Recent Progress of Two-Dimensional Thermoelectric Materials. NANO-MICRO LETTERS 2020; 12:36. [PMID: 34138247 PMCID: PMC7770719 DOI: 10.1007/s40820-020-0374-x] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Accepted: 12/24/2019] [Indexed: 05/04/2023]
Abstract
Thermoelectric generators have attracted a wide research interest owing to their ability to directly convert heat into electrical power. Moreover, the thermoelectric properties of traditional inorganic and organic materials have been significantly improved over the past few decades. Among these compounds, layered two-dimensional (2D) materials, such as graphene, black phosphorus, transition metal dichalcogenides, IVA-VIA compounds, and MXenes, have generated a large research attention as a group of potentially high-performance thermoelectric materials. Due to their unique electronic, mechanical, thermal, and optoelectronic properties, thermoelectric devices based on such materials can be applied in a variety of applications. Herein, a comprehensive review on the development of 2D materials for thermoelectric applications, as well as theoretical simulations and experimental preparation, is presented. In addition, nanodevice and new applications of 2D thermoelectric materials are also introduced. At last, current challenges are discussed and several prospects in this field are proposed.
Collapse
Affiliation(s)
- Delong Li
- Collaborative Innovation Centre for Optoelectronic Science & Technology, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Institute of Microscale Optoelectronics, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, Guangdong, People's Republic of China
| | - Youning Gong
- Collaborative Innovation Centre for Optoelectronic Science & Technology, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Institute of Microscale Optoelectronics, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, Guangdong, People's Republic of China
| | - Yuexing Chen
- Shenzhen Key Laboratory of Advanced Thin Films and Applications, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, Guangdong, People's Republic of China
| | - Jiamei Lin
- Collaborative Innovation Centre for Optoelectronic Science & Technology, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Institute of Microscale Optoelectronics, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, Guangdong, People's Republic of China
| | - Qasim Khan
- Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, ON, Canada
| | - Yupeng Zhang
- Collaborative Innovation Centre for Optoelectronic Science & Technology, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Institute of Microscale Optoelectronics, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, Guangdong, People's Republic of China.
| | - Yu Li
- Shenzhen Key Laboratory of Special Functional Materials, Shenzhen Engineering Laboratory for Advanced Technology of Ceramics, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, Guangdong, People's Republic of China.
| | - Han Zhang
- Collaborative Innovation Centre for Optoelectronic Science & Technology, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Institute of Microscale Optoelectronics, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, Guangdong, People's Republic of China.
| | - Heping Xie
- Shenzhen Clean Energy Research Institute, Shenzhen University, Shenzhen, 518060, Guangdong, People's Republic of China
| |
Collapse
|
18
|
Steimle BC, Fenton JL, Schaak RE. Rational construction of a scalable heterostructured nanorod megalibrary. Science 2020; 367:418-424. [DOI: 10.1126/science.aaz1172] [Citation(s) in RCA: 108] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 12/06/2019] [Indexed: 12/17/2022]
Abstract
Integrating multiple materials in arbitrary arrangements within nanoparticles is a prerequisite for advancing many applications. Strategies to synthesize heterostructured nanoparticles are emerging, but they are limited in complexity, scope, and scalability. We introduce two design guidelines, based on interfacial reactivity and crystal structure relations, that enable the rational synthesis of a heterostructured nanorod megalibrary. We define synthetically feasible pathways to 65,520 distinct multicomponent metal sulfide nanorods having as many as 6 materials, 8 segments, and 11 internal interfaces by applying up to seven sequential cation-exchange reactions to copper sulfide nanorod precursors. We experimentally observe 113 individual heterostructured nanorods and demonstrate the scalable production of three samples. Previously unimaginable complexity in heterostructured nanorods is now routinely achievable with simple benchtop chemistry and standard laboratory glassware.
Collapse
Affiliation(s)
- Benjamin C. Steimle
- Department of Chemistry, The Pennsylvania State University, University Park, PA 16802, USA
| | - Julie L. Fenton
- Department of Chemistry, The Pennsylvania State University, University Park, PA 16802, USA
| | - Raymond E. Schaak
- Department of Chemistry, The Pennsylvania State University, University Park, PA 16802, USA
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
- Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, USA
| |
Collapse
|
19
|
Khatun S, Pal AJ. Dirac States of 2D Topological Insulators: Effect of Heterovalent Dopant-Content. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2019; 25:1437-1441. [PMID: 30975247 DOI: 10.1017/s143192761900045x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We have studied Bi2Se3 at its 2D-limit using scanning tunneling spectroscopy (STS). Bulk Bi2Se3 is a well-known topological insulator having gapless surface states. In the 2D limit, the interior of the material exhibits a band gap, whereas the periphery shows a gapless metallic state having a Dirac point. We demonstrate a method to tune the Fermi energy and hence the Dirac point of Bi2Se3 nanoplates through doping at the anionic site. For this purpose, STS measurements were carried out on the Bi2Se3 system. We have used bromide as a dopant, which turns the material to n-type in nature. As a result, STS studies infer that the Fermi energy (EF) shifted toward the conduction band and consequently the Dirac point could be found to move away from Fermi energy. Through STS measurements, we have demonstrated a correlation between the shift of Dirac point position and the dopant content. The size, shape, and compositions of Bi2Se3 nanoflakes and concentration of bromine in the doped nanostructures were determined using transmission electron microscopy, associated energy dispersive X-ray spectroscopy analysis, and X-ray diffraction.
Collapse
Affiliation(s)
- Salma Khatun
- Department of Solid State Physics, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Amlan J Pal
- Department of Solid State Physics, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| |
Collapse
|
20
|
Zheng W, Luo Y, Liu Y, Shi J, Xiong R, Wang Z. Synergistical Tuning Interface Barrier and Phonon Propagation in Au-Sb 2Te 3 Nanoplate for Boosting Thermoelectric Performance. J Phys Chem Lett 2019; 10:4903-4909. [PMID: 31403316 DOI: 10.1021/acs.jpclett.9b02312] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Engineering of low-dimensional metal-semiconductor nanocomposites is expected to decouple electrical and thermal property, leading to substantially higher thermoelectric property. In this study, we rationally design a unique 0D-2D Au-Sb2Te3 architecture with beneficial interface barrier and strengthened phonon scattering, resulting in synergistically optimized electrical and thermal properties. In-situ growth of Au nanoparticles ∼10 nm on Sb2Te3 nanoplates enables better manipulation of electron and phonon transport compared to traditional bulks. The energy barrier between Au and Sb2Te3 effectively filters low-energy holes, while the Au nanoparticles competently hinder the propagation of midto-long wavelength phonons. As a result, this unique 0D-2D Au-Sb2Te3 composite exhibits a concurrent increase in electrical conductivity and Seebeck coefficient, and a decrease in lattice thermal conductivity, which allows a double of ZT value (∼0.8 at 523 K) for 1 mol % Au-Sb2Te3 composites with respect to the pristine Sb2Te3 (∼0.39 at 523 K). This self-assembled heterostructure provides a direction to design other low-dimensional metal-semiconductor nanoassemblies for thermoelectric application.
Collapse
Affiliation(s)
- Wenwen Zheng
- Hubei Key Laboratory of Optical Information and Pattern Recognition, School of Mathematics and Physics, Wuhan Institute of Technology, Wuhan 430205, PR China
| | - Yubo Luo
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Yong Liu
- Key Laboratory of Artificial Micro-and Nano-structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, PR China
| | - Jing Shi
- Key Laboratory of Artificial Micro-and Nano-structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, PR China
| | - Rui Xiong
- Key Laboratory of Artificial Micro-and Nano-structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, PR China
| | - Ziyu Wang
- The Institute of Technological Sciences, Wuhan University, Wuhan 430072, PR China
| |
Collapse
|
21
|
Jamwal D, Mehta SK. Metal Telluride Nanomaterials: Facile Synthesis, Properties and Applications for Third Generation Devices. ChemistrySelect 2019. [DOI: 10.1002/slct.201803680] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Deepika Jamwal
- Department of Chemistry and Centre of Advanced Studies in Chemistry; Panjab University; Chandigarh 160014 India
- School of Chemistry, Faculty of Basic Sciences; Shoolini University, Solan, H.P.; 173212 India
| | - Surinder Kumar Mehta
- Department of Chemistry and Centre of Advanced Studies in Chemistry; Panjab University; Chandigarh 160014 India
| |
Collapse
|
22
|
Yazdani S, Pettes MT. Nanoscale self-assembly of thermoelectric materials: a review of chemistry-based approaches. NANOTECHNOLOGY 2018; 29:432001. [PMID: 30052199 DOI: 10.1088/1361-6528/aad673] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This review is concerned with the leading methods of bottom-up material preparation for thermal-to-electrical energy interconversion. The advantages, capabilities, and challenges from a material synthesis perspective are surveyed and the methods are discussed with respect to their potential for improvement (or possibly deterioration) of application-relevant transport properties. Solution chemistry-based synthesis approaches are re-assessed from the perspective of thermoelectric applications based on reported procedures for nanowire, quantum dot, mesoporous, hydro/solvothermal, and microwave-assisted syntheses as these techniques can effectively be exploited for industrial mass production. In terms of energy conversion efficiency, the benefit of self-assembly can occur from three paths: suppressing thermal conductivity, increasing thermopower, and boosting electrical conductivity. An ideal thermoelectric material gains from all three improvements simultaneously. Most bottom-up materials have been shown to exhibit very low values of thermal conductivity compared to their top-down (solid-state) counterparts, although the main challenge lies in improving their poor electrical properties. Recent developments in the field discussed in this review reveal that the traditional view of bottom-up thermoelectrics as inferior materials suffering from poor performance is not appropriate. Thermopower enhancement due to size and energy filtering effects, electrical conductivity enhancement, and thermal conductivity reduction mechanisms inherent in bottom-up nanoscale self-assembly syntheses are indicative of the impact that these techniques will play in future thermoelectric applications.
Collapse
Affiliation(s)
- Sajad Yazdani
- Department of Mechanical Engineering and Institute of Materials Science, University of Connecticut, Storrs, CT 06269, United States of America
| | | |
Collapse
|
23
|
Khatun S, Bhunia H, Pal AJ. Bi 2Se 3 topological insulator at the 2D-limit: role of halide-doping on Dirac point. Phys Chem Chem Phys 2018; 20:17934-17941. [PMID: 29926058 DOI: 10.1039/c8cp02604a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
2D topological insulators exhibit insulating bulk and conducting edge states with a Dirac point, which at times is within the energy gap and could be on either side of the Fermi energy. In this study, we demonstrate a method to tune the energy of the Dirac edge state by introducing halides as dopants in Bi2Se3. We chose halides to substitute the anion, so that due to higher atomic number (of iodine, for example) with respect to selenium, the spin-orbit coupling parameter could be enhanced, leading to the significant separation of the Dirac point from the Fermi energy. With different halogens having different atomic numbers on either side of selenium, the Dirac point could hence be tuned towards both directions. The dopants, due to their heterovalent nature with respect to selenide, introduce carriers in the lattice and consequently, also shift the Fermi energy. We show that the Dirac point with respect to Fermi energy could be correlated to the dopant's atomic number and thus the atomic-number-induced spin-orbit coupling parameter. Strains developed in the lattice due to a mismatch in the effective ionic radii of the dopants and the host anion affected distribution of band energies, leaving the (distribution of) Dirac point unaffected due to its topologically protected nature.
Collapse
Affiliation(s)
- Salma Khatun
- Department of Solid State Physics, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India.
| | | | | |
Collapse
|
24
|
Liu Y, Wang Q, Pan J, Sun Y, Zhang L, Song S. Hierarchical Bi2
Te3
Nanostrings: Green Synthesis and Their Thermoelectric Properties. Chemistry 2018; 24:9765-9768. [DOI: 10.1002/chem.201801611] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Yu Liu
- State Key Laboratory of Rare Earth Resource Utilization; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun 130021 P. R. China
| | - Qishun Wang
- State Key Laboratory of Rare Earth Resource Utilization; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun 130021 P. R. China
| | - Jing Pan
- State Key Laboratory of Rare Earth Resource Utilization; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun 130021 P. R. China
- College of chemistry; Jilin University; Changchun 130012 P. R. China
| | - Yabin Sun
- Department of Ophthalmology; The First Hospital of Jilin University; Changchun 130021 P. R. China
| | - Lingling Zhang
- State Key Laboratory of Rare Earth Resource Utilization; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun 130021 P. R. China
- College of chemistry; Jilin University; Changchun 130012 P. R. China
| | - Shuyan Song
- State Key Laboratory of Rare Earth Resource Utilization; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun 130021 P. R. China
| |
Collapse
|
25
|
Seo HJ, Jeong W, Lee S, Moon GD. Ultrathin silver telluride nanowire films and gold nanosheet electrodes for a flexible resistive switching device. NANOSCALE 2018; 10:5424-5430. [PMID: 29511755 DOI: 10.1039/c8nr01429a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We demonstrated a flexible resistive switching device based on ultrathin Ag2Te nanowire (NW) films and Au nanosheet (NS) electrodes by exploiting a monolayer assembly on the water surface for macroscale two-dimensional structures. Firstly, ultrathin TeNWs (diameter ≈ 10 nm) are rapidly assembled on the water surface as a form of monolayer and transferred to fabricate TeNW films on various substrates with any available size. An assembled TeNW film was used as a template to produce a Ag2TeNW film through chemical transformation. A well-aligned Ag2TeNW film device showed reversible resistive switching properties when the Ag composition of the silver telluride NW becomes stoichiometric Ag2Te. Additionally, a non-stoichiometric Ag2+δTeNW film shows an increased On/Off ratio. For a flexible memory device, ultrathin AuNSs (thickness ≤20 nm) were adopted as working electrodes, since thermally deposited gold electrodes tend to crack under strain, which can fail to maintain the electrical properties. A paper-like flexibility of AuNS proved its capability as optimal electrodes of ultrathin Ag2TeNW film-based resistive memory devices.
Collapse
Affiliation(s)
- Ho Jun Seo
- Dongnam Regional Division, Korea Institute of Industrial Technology, Busan, Korea 46938.
| | - Wooseong Jeong
- Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology, Daegu, Korea 42988.
| | - Sungwon Lee
- Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology, Daegu, Korea 42988.
| | - Geon Dae Moon
- Dongnam Regional Division, Korea Institute of Industrial Technology, Busan, Korea 46938.
| |
Collapse
|
26
|
Solution Growth of Two-Dimensional Bi₂Se₃ Nanosheets for Two-Color All-Optical Switching. MATERIALS 2017; 10:ma10111332. [PMID: 29160803 PMCID: PMC5706279 DOI: 10.3390/ma10111332] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 11/14/2017] [Accepted: 11/18/2017] [Indexed: 11/24/2022]
Abstract
Two-dimensional Bi2Se3 nanosheets with hexagonal shape are synthesized by a solution synthetic route. The Bi2Se3 nanosheets are 120 nm in edge width and 7 nm in thickness. The size of the Bi2Se3 nanosheets can be controlled by choosing different kinds of reducing agents including hydroxylamine and ethylenediamine. Subsequently, we demonstrate a configuration of two-color all-optical switching based on plasma channels effect using the as-synthesized Bi2Se3 nanosheets as an optical media. The signal light can be modulated as two states including dot and ring shape by changing the intensity of control light. The modulated signal light exhibits excellent spatial propagation properties. As a type of interesting optical material, ultrathin two-dimensional Bi2Se3 nanosheets might provide an effective option for photoelectric applications.
Collapse
|
27
|
Catalytic topological insulator Bi 2 Se 3 nanoparticles for in vivo protection against ionizing radiation. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 13:1597-1605. [DOI: 10.1016/j.nano.2017.02.018] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 01/23/2017] [Accepted: 02/27/2017] [Indexed: 12/22/2022]
|
28
|
Microstructure Analysis and Thermoelectric Properties of Melt-Spun Bi-Sb-Te Compounds. CRYSTALS 2017. [DOI: 10.3390/cryst7060180] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
29
|
Zhuang TT, Liu Y, Li Y, Sun M, Sun ZJ, Du PW, Jiang J, Yu SH. 1D Colloidal Hetero-Nanomaterials with Programmed Semiconductor Morphology and Metal Location for Enhancing Solar Energy Conversion. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1602629. [PMID: 28134465 DOI: 10.1002/smll.201602629] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 11/18/2016] [Indexed: 06/06/2023]
Abstract
A new kind of multitetrahedron sheath ternary ZnS-(CdS/Au) hetero-nanorod is prepared, in which one 1D ultrathin ZnS nanorod is integrated with segmented tetrahedron sheaths made of CdS, and more importantly, Au nanoparticles can be decorated in a targeted manner onto the vertexes and edges of CdS tetrahedron sheaths solely, for achieving performance improvement in photoelectric and photochemical conversion applications.
Collapse
Affiliation(s)
- Tao-Tao Zhuang
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, CAS Center for Excellence in Nanoscience, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Yan Liu
- Department of Chemical Physics, Synergetic Innovation Center of Quantum Information and Quantum Physics, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Yi Li
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, CAS Center for Excellence in Nanoscience, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Meng Sun
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, CAS Center for Excellence in Nanoscience, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Zi-Jun Sun
- Department of Chemical Physics, Synergetic Innovation Center of Quantum Information and Quantum Physics, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Ping-Wu Du
- Department of Chemical Physics, Synergetic Innovation Center of Quantum Information and Quantum Physics, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Jun Jiang
- Department of Chemical Physics, Synergetic Innovation Center of Quantum Information and Quantum Physics, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Shu-Hong Yu
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, CAS Center for Excellence in Nanoscience, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| |
Collapse
|
30
|
Chen Y, Wu Y, Sun B, Liu S, Liu H. Two-Dimensional Nanomaterials for Cancer Nanotheranostics. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1603446. [PMID: 28075057 DOI: 10.1002/smll.201603446] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 11/27/2016] [Indexed: 06/06/2023]
Abstract
Emerging nanotechnologies show unprecedented advantages in accelerating cancer theranostics. Among them, two-dimensional nanomaterials (2DNMs) represent a novel type of material with versatile physicochemical properties that have enabled a new horizon for applications in both cancer diagnosis and therapy. Studies have demonstrated that 2DNMs may be used in diverse aspects, including i) cancer detection due to their high propensity towards tumor markers; ii) molecular imaging for guided tumor therapies, and iii) drug and gene loading, photothermal and photodynamic cancer therapies. However, their biomedical applications raise concerns due to the limited understanding of their in vivo metabolism, transformation and possible toxicities. In this comprehensive review, the state-of-the-art development of 2DNMs and their implications for cancer nanotheranostics are presented. The modification strategies to enhance the biocompatibility of 2DNMs are also reviewed.
Collapse
Affiliation(s)
- Yongjiu Chen
- State Key Laboratory of Environmental, Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Yakun Wu
- State Key Laboratory of Environmental, Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Bingbing Sun
- School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Sijin Liu
- State Key Laboratory of Environmental, Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Huiyu Liu
- Beijing Key Laboratory of Bioprocess, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| |
Collapse
|
31
|
Mashhadi S, Duong DL, Burghard M, Kern K. Efficient Photothermoelectric Conversion in Lateral Topological Insulator Heterojunctions. NANO LETTERS 2017; 17:214-219. [PMID: 28073269 DOI: 10.1021/acs.nanolett.6b03851] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Tuning the electron and phonon transport properties of thermoelectric materials by nanostructuring has enabled improving their thermopower figure of merit. Three-dimensional topological insulators, including many bismuth chalcogenides, attract increasing attention for this purpose, as their topologically protected surface states are promising to further enhance the thermoelectric performance. While individual bismuth chalcogenide nanostructures have been studied with respect to their photothermoelectric properties, nanostructured p-n junctions of these compounds have not yet been explored. Here, we experimentally investigate the room temperature thermoelectric conversion capability of lateral heterostructures consisting of two different three-dimensional topological insulators, namely, the n-type doped Bi2Te2Se and the p-type doped Sb2Te3. Scanning photocurrent microscopy of the nanoplatelets reveals efficient thermoelectric conversion at the p-n heterojunction, exploiting hot carriers of opposite sign in the two materials. From the photocurrent data, a Seebeck coefficient difference of ΔS = 200 μV/K was extracted, in accordance with the best values reported for the corresponding bulk materials. Furthermore, it is in very good agreement with the value of ΔS = 185 μV/K obtained by DFT calculation taking into account the specific doping levels of the two nanostructured components.
Collapse
Affiliation(s)
- Soudabeh Mashhadi
- Max Planck Institute for Solid State Research , Heisenbergstrasse 1, D-70569 Stuttgart, Germany
| | - Dinh Loc Duong
- Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS) , Suwon 16419, Republic of Korea
- Sungkyunkwan University (SKKU) , Suwon 16419, Republic of Korea
| | - Marko Burghard
- Max Planck Institute for Solid State Research , Heisenbergstrasse 1, D-70569 Stuttgart, Germany
| | - Klaus Kern
- Max Planck Institute for Solid State Research , Heisenbergstrasse 1, D-70569 Stuttgart, Germany
- Institut de Physique, Ecole Polytechnique Fédérale de Lausanne , CH-1015 Lausanne, Switzerland
| |
Collapse
|
32
|
Bhunia H, Bar A, Bera A, Pal AJ. Simultaneous observation of surface- and edge-states of a 2D topological insulator through scanning tunneling spectroscopy and differential conductance imaging. Phys Chem Chem Phys 2017; 19:9872-9878. [DOI: 10.1039/c7cp00149e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Gapless edge-states with a Dirac point below the Fermi energy and band-edges at the interior observed in 2D topological insulators.
Collapse
Affiliation(s)
- Hrishikesh Bhunia
- Department of Solid State Physics
- Indian Association for the Cultivation of Science
- Jadavpur
- Kolkata 700032
- India
| | - Abhijit Bar
- Department of Solid State Physics
- Indian Association for the Cultivation of Science
- Jadavpur
- Kolkata 700032
- India
| | - Abhijit Bera
- Department of Solid State Physics
- Indian Association for the Cultivation of Science
- Jadavpur
- Kolkata 700032
- India
| | - Amlan J. Pal
- Department of Solid State Physics
- Indian Association for the Cultivation of Science
- Jadavpur
- Kolkata 700032
- India
| |
Collapse
|
33
|
Mao F, Guo J, Zhang S, Yang F, Sun Q, Ma J, Li Z. Solvothermal synthesis and electrochemical properties of S-doped Bi2Se3 hierarchical microstructure assembled by stacked nanosheets. RSC Adv 2016. [DOI: 10.1039/c6ra01301e] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Hierarchical S-doped Bi2Se3 microspheres assembled by stacked nanosheets were successfully synthesized as the anode of a lithium ion battery, which shows an initial discharge capacity of 771.3 mA h g−1 with great potential in energy storage.
Collapse
Affiliation(s)
- Fangxin Mao
- Center for Molecular Imaging and Nuclear Medicine
- School for Radiological and Interdisciplinary Sciences (RAD-X)
- Soochow University
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions
- Suzhou
| | - Jing Guo
- Key Laboratory for Micro-/Nano-Optoelectronic Devices of the Ministry of Education
- School of Physics and Electronics
- Hunan University
- Changsha 410082
- P. R. China
| | - Shaohua Zhang
- Institute for Superconducting & Electronic Materials
- The University of Wollongong
- Australia
| | - Fan Yang
- Key Laboratory for Micro-/Nano-Optoelectronic Devices of the Ministry of Education
- School of Physics and Electronics
- Hunan University
- Changsha 410082
- P. R. China
| | - Qiao Sun
- Center for Molecular Imaging and Nuclear Medicine
- School for Radiological and Interdisciplinary Sciences (RAD-X)
- Soochow University
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions
- Suzhou
| | - Jianmin Ma
- Key Laboratory for Micro-/Nano-Optoelectronic Devices of the Ministry of Education
- School of Physics and Electronics
- Hunan University
- Changsha 410082
- P. R. China
| | - Zhen Li
- Center for Molecular Imaging and Nuclear Medicine
- School for Radiological and Interdisciplinary Sciences (RAD-X)
- Soochow University
- Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions
- Suzhou
| |
Collapse
|