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Shen C, Wang X, Wei Y, Chen F, Zhuo Z, Cai M, Li M, Sun S. In Situ Growth Facilitating the Piezo-Photocatalytic Effect of Zn 1-xCd xS/ZnO Nanorods for Highly Efficient H 2 Production. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:7328-7336. [PMID: 37196195 DOI: 10.1021/acs.langmuir.3c00423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Photocatalytic H2 production holds promise for alleviating energy and environmental issues. The separation of photoinduced charge carriers plays vital roles in enhancing the activity of photocatalytic H2 production. The piezoelectric effect has been proposed to be effective in facilitating the separation of charge carriers. However, the piezoelectric effect is usually restricted by the noncompact contact between the polarized materials and semiconductors. In this study, Zn1-xCdxS/ZnO nanorod arrays on stainless steel for piezo-photocatalytic H2 production are fabricated by an in situ growth method, achieving an electronic-level contact between Zn1-xCdxS and ZnO. The separation and migration of photogenerated charge carriers in Zn1-xCdxS are significantly improved by the piezoelectric effect induced by ZnO under mechanical vibration. Consequently, under solar and ultrasonic irradiation, the H2 production rate of Zn1-xCdxS/ZnO nanorod arrays achieves 20.96 μmol h-1 cm-2, which is 4 times higher than that under solar irradiation. Such a performance can be attributed to the synergies of the piezoelectric field of bent ZnO nanorods and the built-in electric field of the Zn1-xCdxS/ZnO heterostructure, which efficiently separate the photoinduced charge carriers. This study provides a new strategy to couple polarized materials and semiconductors for highly efficient piezo-photocatalytic H2 production.
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Affiliation(s)
- Cheng Shen
- School of Chemistry and Chemical Engineering, Anhui University, Hefei, Anhui 230601, China
| | - Xue Wang
- School of Chemistry and Chemical Engineering, Anhui University, Hefei, Anhui 230601, China
| | - Yuxue Wei
- School of Chemistry and Chemical Engineering, Anhui University, Hefei, Anhui 230601, China
| | - Fang Chen
- School of Chemistry and Chemical Engineering, Anhui University, Hefei, Anhui 230601, China
| | - Zhenzhen Zhuo
- School of Chemistry and Chemical Engineering, Anhui University, Hefei, Anhui 230601, China
| | - Mengdie Cai
- School of Chemistry and Chemical Engineering, Anhui University, Hefei, Anhui 230601, China
| | - Mengmeng Li
- School of Chemistry and Chemical Engineering, Anhui University, Hefei, Anhui 230601, China
| | - Song Sun
- School of Chemistry and Chemical Engineering, Anhui University, Hefei, Anhui 230601, China
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Żak AM. Light-Induced In Situ Transmission Electron Microscopy─Development, Challenges, and Perspectives. NANO LETTERS 2022; 22:9219-9226. [PMID: 36442075 PMCID: PMC9756336 DOI: 10.1021/acs.nanolett.2c03669] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/16/2022] [Indexed: 06/16/2023]
Abstract
Transmission electron microscopy is a basic technique used for examining matter at the highest magnification scale available. One of its most challenging branches is in situ microscopy, in which dynamic processes are observed in real time. Among the various stimuli, like strain, temperature, and magnetic or electric fields, the light-matter interaction is rarely observed. However, in recent years, a significant increase in the interest in this technique has been observed. Therefore, I present a summary and critical review of all the in situ experiments performed with light, various technical possibilities for bringing radiation inside the transmission electron microscope, and the most important differences between the effects of light and electrons on the studied matter. Finally, I summarize the most promising directions for further research using light excitation.
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Nawaz MZ, Xu L, Zhou X, Li J, Shah KH, Wang J, Wu B, Wang C. High-Performance and Broadband Flexible Photodetectors Employing Multicomponent Alloyed 1D CdS xSe 1-x Micro-Nanostructures. ACS APPLIED MATERIALS & INTERFACES 2022; 14:19659-19671. [PMID: 35438480 DOI: 10.1021/acsami.2c01002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Low-cost multicomponent alloyed one-dimensional (1D) semiconductors exhibit broadband absorption from the ultraviolet to the near-infrared regime, which has attracted a great deal of interest in high-performance flexible optoelectronic devices. Here, we report the facile one-step fabrication of high-performance broadband rigid and flexible photodevices based on multicomponent alloyed 1D cadmium-sulfur-selenide (CdSxSe1-x) micro-nanostructures obtained via a vapor transport route. Photoresponse measurements have demonstrated their superior spectral photoresponsivity (5.8 × 104 A/W), several orders of magnitude higher than the pristine CdSe nanobelt photodevice, high specific detectivity (2 × 1015 Jones), photogain (1.2 × 105), external quantum efficiency (EQE, 1.4 × 107%), rapid response speed (13 ms), and excellent long-term environmental stability. The multicomponent alloyed CdSxSe1-x nanobelt photodevice demonstrated about three times higher photocurrent as well as can operate under multiple color illuminations (200-800 nm) and at a high applied bias of 10 V with the photoresponsivity and EQE being boosted to 4.34 × 105 A/W and 8.96 × 107%, respectively. Furthermore, multicomponent alloyed CdSxSe1-x nanobelt flexible photodevices show excellent mechanical and flexural photostabilities with identical photoresponse as rigid nanodevices. The improvement mechanism found in the present research can be exploited to lead to the design of high-performance flexible photodevices comprising other multicomponent nanomaterials.
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Affiliation(s)
- Muhammad Zubair Nawaz
- College of Science and Shanghai Institute of Intelligent Electronics and Systems, Donghua University, Shanghai 201620, China
| | - Liu Xu
- College of Science and Shanghai Institute of Intelligent Electronics and Systems, Donghua University, Shanghai 201620, China
| | - Xin Zhou
- College of Science and Shanghai Institute of Intelligent Electronics and Systems, Donghua University, Shanghai 201620, China
| | - Jiaping Li
- College of Science and Shanghai Institute of Intelligent Electronics and Systems, Donghua University, Shanghai 201620, China
| | - Khizar Hussain Shah
- College of Science and Shanghai Institute of Intelligent Electronics and Systems, Donghua University, Shanghai 201620, China
| | - Jiale Wang
- College of Science and Shanghai Institute of Intelligent Electronics and Systems, Donghua University, Shanghai 201620, China
| | - Binhe Wu
- College of Science and Shanghai Institute of Intelligent Electronics and Systems, Donghua University, Shanghai 201620, China
| | - Chunrui Wang
- College of Science and Shanghai Institute of Intelligent Electronics and Systems, Donghua University, Shanghai 201620, China
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Żak AM, Kaczmarczyk O, Piksa M, Grzęda J, Matczyszyn K. Fiber-optic sample illuminator design for the observation of light induced phenomena with transmission electron microscopy in situ: Antimicrobial photodynamic therapy. Ultramicroscopy 2021; 230:113388. [PMID: 34509894 DOI: 10.1016/j.ultramic.2021.113388] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 08/25/2021] [Accepted: 08/30/2021] [Indexed: 10/20/2022]
Abstract
Antibacterial photodynamic therapy is a promising treatment for problematic infections caused by bacteria and fungi. Despite its undoubted effectiveness, the ultrastructural mechanism of microbial death remains not fully described and distinct organisms respond to the treatment with different efficacy. For this reason, it was decided to try imaging the process using the in situ transmission electron microscopy method. To conduct an observational experiment, the microscope was significantly modified. Liquid cell methods were used, electron doses and their influence on the sample were estimated, and a fiber-optic sample illuminator was designed and built. The modifications allowed for the light-induced characterization of photosensitizer-bacteria interaction. Microscope modification is a promising platform for further studies of light-induced phenomena in both life and material science.
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Affiliation(s)
- Andrzej M Żak
- Electron Microscopy Laboratory, Faculty of Mechanical Engineering, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland; Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Rudolfa Weigla 12, 53-114 Wroclaw, Poland.
| | - Olga Kaczmarczyk
- Electron Microscopy Laboratory, Faculty of Mechanical Engineering, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Marta Piksa
- Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Rudolfa Weigla 12, 53-114 Wroclaw, Poland
| | - Jakub Grzęda
- Department of Lightweight Elements Engineering, Foundry and Automation, Faculty of Mechanical Engineering, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Katarzyna Matczyszyn
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
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Pishgar S, Gulati S, Strain JM, Liang Y, Mulvehill MC, Spurgeon JM. In Situ Analytical Techniques for the Investigation of Material Stability and Interface Dynamics in Electrocatalytic and Photoelectrochemical Applications. SMALL METHODS 2021; 5:e2100322. [PMID: 34927994 DOI: 10.1002/smtd.202100322] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/17/2021] [Indexed: 06/14/2023]
Abstract
Electrocatalysis and photoelectrochemistry are critical to technologies like fuel cells, electrolysis, and solar fuels. Material stability and interfacial phenomena are central to the performance and long-term viability of these technologies. Researchers need tools to uncover the fundamental processes occurring at the electrode/electrolyte interface. Numerous analytical instruments are well-developed for material characterization, but many are ex situ techniques often performed under vacuum and without applied bias. Such measurements miss dynamic phenomena in the electrolyte under operational conditions. However, innovative advancements have allowed modification of these techniques for in situ characterization in liquid environments at electrochemically relevant conditions. This review explains some of the main in situ electrochemical characterization techniques, briefly explaining the principle of operation and highlighting key work in applying the method to investigate material stability and interfacial properties for electrocatalysts and photoelectrodes. Covered methods include spectroscopy (in situ UV-vis, ambient pressure X-ray photoelectron spectroscopy (APXPS), and in situ Raman), mass spectrometry (on-line inductively coupled plasma mass spectrometry (ICP-MS) and differential electrochemical mass spectrometry (DEMS)), and microscopy (in situ transmission electron microscopy (TEM), electrochemical atomic force microscopy (EC-AFM), electrochemical scanning tunneling microscopy (EC-STM), and scanning electrochemical microscopy (SECM)). Each technique's capabilities and advantages/disadvantages are discussed and summarized for comparison.
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Affiliation(s)
- Sahar Pishgar
- Conn Center for Renewable Energy Research, University of Louisville, Louisville, KY, 40292, USA
| | - Saumya Gulati
- Conn Center for Renewable Energy Research, University of Louisville, Louisville, KY, 40292, USA
| | - Jacob M Strain
- Conn Center for Renewable Energy Research, University of Louisville, Louisville, KY, 40292, USA
| | - Ying Liang
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Guangzhou, Guangdong, 510006, China
| | - Matthew C Mulvehill
- Conn Center for Renewable Energy Research, University of Louisville, Louisville, KY, 40292, USA
| | - Joshua M Spurgeon
- Conn Center for Renewable Energy Research, University of Louisville, Louisville, KY, 40292, USA
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Continuous high-efficient degradation of organic pollutants based on sea urchin-like Fe3O4/ZnO/ZnSe heterostructures in photocatalytic magnetically fixed bed reactor. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125198] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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7
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Sun Y, Dong T, Yu L, Xu J, Chen K. Planar Growth, Integration, and Applications of Semiconducting Nanowires. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1903945. [PMID: 31746050 DOI: 10.1002/adma.201903945] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 10/05/2019] [Indexed: 06/10/2023]
Abstract
Silicon and other inorganic semiconductor nanowires (NWs) have been extensively investigated in the last two decades for constructing high-performance nanoelectronics, sensors, and optoelectronics. For many of these applications, these tiny building blocks have to be integrated into the existing planar electronic platform, where precise location, orientation, and layout controls are indispensable. In the advent of More-than-Moore's era, there are also emerging demands for a programmable growth engineering of the geometry, composition, and line-shape of NWs on planar or out-of-plane 3D sidewall surfaces. Here, the critical technologies established for synthesis, transferring, and assembly of NWs upon planar surface are examined; then, the recent progress of in-plane growth of horizontal NWs directly upon crystalline or patterned substrates, constrained by using nanochannels, an epitaxial interface, or amorphous thin film precursors is discussed. Finally, the unique capabilities of planar growth of NWs in achieving precise guided growth control, programmable geometry, composition, and line-shape engineering are reviewed, followed by their latest device applications in building high-performance field-effect transistors, photodetectors, stretchable electronics, and 3D stacked-channel integration.
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Affiliation(s)
- Ying Sun
- National Laboratory of Solid State Microstructures/School of Electronics Science and Engineering/Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, P. R. China
| | - Taige Dong
- National Laboratory of Solid State Microstructures/School of Electronics Science and Engineering/Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, P. R. China
| | - Linwei Yu
- National Laboratory of Solid State Microstructures/School of Electronics Science and Engineering/Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, P. R. China
| | - Jun Xu
- National Laboratory of Solid State Microstructures/School of Electronics Science and Engineering/Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, P. R. China
| | - Kunji Chen
- National Laboratory of Solid State Microstructures/School of Electronics Science and Engineering/Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, P. R. China
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8
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Zhang C, Firestein KL, Fernando JFS, Siriwardena D, von Treifeldt JE, Golberg D. Recent Progress of In Situ Transmission Electron Microscopy for Energy Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1904094. [PMID: 31566272 DOI: 10.1002/adma.201904094] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 09/01/2019] [Indexed: 05/12/2023]
Abstract
In situ transmission electron microscopy (TEM) is one of the most powerful approaches for revealing physical and chemical process dynamics at atomic resolutions. The most recent developments for in situ TEM techniques are summarized; in particular, how they enable visualization of various events, measure properties, and solve problems in the field of energy by revealing detailed mechanisms at the nanoscale. Related applications include rechargeable batteries such as Li-ion, Na-ion, Li-O2 , Na-O2 , Li-S, etc., fuel cells, thermoelectrics, photovoltaics, and photocatalysis. To promote various applications, the methods of introducing the in situ stimuli of heating, cooling, electrical biasing, light illumination, and liquid and gas environments are discussed. The progress of recent in situ TEM in energy applications should inspire future research on new energy materials in diverse energy-related areas.
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Affiliation(s)
- Chao Zhang
- Science and Engineering, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4001, Australia
| | - Konstantin L Firestein
- Science and Engineering, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4001, Australia
| | - Joseph F S Fernando
- Science and Engineering, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4001, Australia
| | - Dumindu Siriwardena
- Science and Engineering, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4001, Australia
| | - Joel E von Treifeldt
- Science and Engineering, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4001, Australia
| | - Dmitri Golberg
- Science and Engineering, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4001, Australia
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9
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Sehar S, Naz I, Perveen I, Ahmed S. Superior dye degradation using SnO2-ZnO hybrid heterostructure catalysts. KOREAN J CHEM ENG 2018. [DOI: 10.1007/s11814-018-0159-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Zhao Y, Fang ZB, Feng W, Wang K, Huang X, Liu P. Hydrogen Production from Pure Water via Piezoelectric-assisted Visible-light Photocatalysis of CdS Nanorod Arrays. ChemCatChem 2018. [DOI: 10.1002/cctc.201800666] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Yan Zhao
- State Key Laboratory of Photocatalysis on Energy and Environment Research Institute of Photocatalysis; Fuzhou University; Fuzhou 350116 P.R. China
| | - Zhi-Bin Fang
- State Key Laboratory of Photocatalysis on Energy and Environment Research Institute of Photocatalysis; Fuzhou University; Fuzhou 350116 P.R. China
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter; Chinese Academy of Sciences; Fuzhou 350002 P.R. China
| | - Wenhui Feng
- State Key Laboratory of Photocatalysis on Energy and Environment Research Institute of Photocatalysis; Fuzhou University; Fuzhou 350116 P.R. China
| | - Kaiqiang Wang
- State Key Laboratory of Photocatalysis on Energy and Environment Research Institute of Photocatalysis; Fuzhou University; Fuzhou 350116 P.R. China
| | - Xueyan Huang
- State Key Laboratory of Photocatalysis on Energy and Environment Research Institute of Photocatalysis; Fuzhou University; Fuzhou 350116 P.R. China
| | - Ping Liu
- State Key Laboratory of Photocatalysis on Energy and Environment Research Institute of Photocatalysis; Fuzhou University; Fuzhou 350116 P.R. China
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Dong H, Xu T, Sun Z, Zhang Q, Wu X, He L, Xu F, Sun L. Simultaneous atomic-level visualization and high precision photocurrent measurements on photoelectric devices by in situ TEM. RSC Adv 2018; 8:948-953. [PMID: 35538973 PMCID: PMC9077018 DOI: 10.1039/c7ra10696c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 12/12/2017] [Indexed: 11/12/2022] Open
Abstract
Herein, a novel in situ transmission electron microscopy (TEM) method that allows high-resolution imaging and spectroscopy of nanomaterials under simultaneous application of different stimuli, such as light excitation, has been reported to directly explore structure–activity relationships targeted towards device optimization. However, the experimental development of a photoelectric system capable of combining atomic-level visualization with simultaneous electrical current measurement with picoampere-precision still remains a great challenge due to light-induced drift while imaging and noise in the electrical components due to background current. Herein, we report a novel photoelectric TEM holder integrating an LED light source covering the whole visible range, a shielding system to avoid current noise, and a picoammeter, which enables stable TEM imaging at the atomic scale while measuring very small photocurrents (pico ampere range). Using this high-precision photoelectric holder, we measured photocurrents of the order of pico amperes for the first time from a prototype quantum dot solar cell assembled inside a TEM and obtained atomic-level imaging of the photo anode under light exposure. This study paves the way towards obtaining mechanistic insights into the operation of photovoltaic devices by providing direct information on the structure–activity relationships that can be used in device optimization. A photoelectric system is capable of simultaneous atomic-level visualization and pico-ampere-precision.![]()
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Affiliation(s)
- Hui Dong
- SEU-FEI Nano-Pico Center
- Key Laboratory of MEMS of the Ministry of Education
- Southeast University
- Nanjing 210096
- China
| | - Tao Xu
- SEU-FEI Nano-Pico Center
- Key Laboratory of MEMS of the Ministry of Education
- Southeast University
- Nanjing 210096
- China
| | - Ziqi Sun
- School of Chemistry, Physics and Mechanical Engineering
- Queensland University of Technology
- Brisbane
- Australia
| | - Qiubo Zhang
- SEU-FEI Nano-Pico Center
- Key Laboratory of MEMS of the Ministry of Education
- Southeast University
- Nanjing 210096
- China
| | - Xing Wu
- Department of Electrical Engineering
- East China Normal University
- Shanghai 200241
- China
| | - Longbing He
- SEU-FEI Nano-Pico Center
- Key Laboratory of MEMS of the Ministry of Education
- Southeast University
- Nanjing 210096
- China
| | - Feng Xu
- SEU-FEI Nano-Pico Center
- Key Laboratory of MEMS of the Ministry of Education
- Southeast University
- Nanjing 210096
- China
| | - Litao Sun
- SEU-FEI Nano-Pico Center
- Key Laboratory of MEMS of the Ministry of Education
- Southeast University
- Nanjing 210096
- China
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Lam KT, Hsiao YJ, Ji LW, Fang TH, Hsiao KH, Chu TT. High-Sensitive Ultraviolet Photodetectors Based on ZnO Nanorods/CdS Heterostructures. NANOSCALE RESEARCH LETTERS 2017; 12:31. [PMID: 28091943 PMCID: PMC5236045 DOI: 10.1186/s11671-016-1818-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Accepted: 12/25/2016] [Indexed: 06/06/2023]
Abstract
The ultraviolet (UV) photodetectors with ZnO nanorods (NRs)/CdS thin film heterostructures on glass substrates have been fabricated and characterized. It can be seen that the UV photoresponsivity of such a device became higher as the ZnO NR length was increased in the investigation. With an incident wavelength of 350 nm and 5 V applied bias, the responsivity of photodetectors based on ZnO NR/CdS heterostructures with the ZnO NR length at 500, 350, and 200 nm and traditional CdS film were at 12.86, 3.83, 0.91, and 0.75 A/W, respectively. The measurement results of the fabricated photodetectors based on ZnO nanorods (NRs)/CdS heterostructures have shown a significant high sensitivity in the range of UV light, which can be useful for the application of UV detection.
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Affiliation(s)
- Kin-Tak Lam
- Fujian University of Technology, Fuzhou, People’s Republic of China
| | - Yu-Jen Hsiao
- National Nano Device Laboratories, National Applied Research Laboratories, Tainan, 701 Taiwan
| | - Liang-Wen Ji
- Institute of Electro-Optical and Materials Science, National Formosa University, Yunlin, 632 Taiwan
| | - Te-Hua Fang
- Department of Mechanical Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung, 807 Taiwan
| | - Kai-Hua Hsiao
- Institute of Electro-Optical and Materials Science, National Formosa University, Yunlin, 632 Taiwan
| | - Tung-Te Chu
- Department of Mechanical Engineering and Automation Engineering, Kao Yuan University, Kaohsiung, 821 Taiwan
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13
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Fernando JFS, Zhang C, Firestein KL, Golberg D. Optical and Optoelectronic Property Analysis of Nanomaterials inside Transmission Electron Microscope. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13. [PMID: 28902975 DOI: 10.1002/smll.201701564] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 07/11/2017] [Indexed: 05/10/2023]
Abstract
In situ transmission electron microscopy (TEM) allows one to investigate nanostructures at high spatial resolution in response to external stimuli, such as heat, electrical current, mechanical force and light. This review exclusively focuses on the optical, optoelectronic and photocatalytic studies inside TEM. With the development of TEMs and specialized TEM holders that include in situ illumination and light collection optics, it is possible to perform optical spectroscopies and diverse optoelectronic experiments inside TEM with simultaneous high resolution imaging of nanostructures. Optical TEM holders combining the capability of a scanning tunneling microscopy probe have enabled nanomaterial bending/stretching and electrical measurements in tandem with illumination. Hence, deep insights into the optoelectronic property versus true structure and its dynamics could be established at the nanometer-range precision thus evaluating the suitability of a nanostructure for advanced light driven technologies. This report highlights systems for in situ illumination of TEM samples and recent research work based on the relevant methods, including nanomaterial cathodoluminescence, photoluminescence, photocatalysis, photodeposition, photoconductivity and piezophototronics.
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Affiliation(s)
- Joseph F S Fernando
- School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia
| | - Chao Zhang
- School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia
| | - Konstantin L Firestein
- School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia
- National University of Science and Technology "MISIS", Leninsky prospect 4, Moscow, 119049, Russia
| | - Dmitri Golberg
- School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD, 4000, Australia
- World Premier International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki, 3050044, Japan
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14
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Yin B, Zhang H, Qiu Y, Luo Y, Zhao Y, Hu L. The light-induced pyro-phototronic effect improving a ZnO/NiO/Si heterojunction photodetector for selectively detecting ultraviolet or visible illumination. NANOSCALE 2017; 9:17199-17206. [PMID: 29095461 DOI: 10.1039/c7nr06037h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this work, we fabricate a ZnO/NiO/Si heterojunction photodetector, which successfully realizes selective detection of UV or visible light in a single photodetector. In addition, the pyro-phototronic effect has been confirmed as an effective approach for enhancing the performance of photodetectors based on ZnO. The pyro-phototronic effect is carefully studied by comparing with a ZnO/Si heterojunction photodetector under UV and visible illumination at different bias voltages. To enhance the photodetector's wavelength selectivity, the parameters and structure are further optimized for the ZnO/NiO/SiO2/Si heterojunction photodetector. The newly designed photodetector may be used to selectively detect and distinguish UV and visible illumination in a single photodetector.
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Affiliation(s)
- Bing Yin
- School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China.
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15
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Xie C, Yan F. Flexible Photodetectors Based on Novel Functional Materials. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1701822. [PMID: 28922544 DOI: 10.1002/smll.201701822] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 07/08/2017] [Indexed: 06/07/2023]
Abstract
Flexible photodetectors have attracted a great deal of research interest in recent years due to their great possibilities for application in a variety of emerging areas such as flexible, stretchable, implantable, portable, wearable and printed electronics and optoelectronics. Novel functional materials, including materials with zero-dimensional (0D) and one-dimensional (1D) inorganic nanostructures, two-dimensional (2D) layered materials, organic semiconductors and perovskite materials, exhibit appealing electrical and optoelectrical properties, as well as outstanding mechanical flexibility, and have been widely studied as building blocks in cost-effective flexible photodetection. Here, we comprehensively review the outstanding performance of flexible photodetectors made from these novel functional materials reported in recent years. The photoresponse characteristics and flexibility of the devices will be discussed systematically. Summaries and challenges are provided to guide future directions of this vital research field.
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Affiliation(s)
- Chao Xie
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, China
- School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, 230009, China
| | - Feng Yan
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, China
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Sharma G, ALOthman ZA, Kumar A, Sharma S, Ponnusamy SK, Naushad M. Fabrication and characterization of a nanocomposite hydrogel for combined photocatalytic degradation of a mixture of malachite green and fast green dye. ACTA ACUST UNITED AC 2017. [DOI: 10.1007/s41204-017-0014-y] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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17
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Dong J, Xue Y, Zhang C, Weng Q, Dai P, Yang Y, Zhou M, Li C, Cui Q, Kang X, Tang C, Bando Y, Golberg D, Wang X. Improved Li + Storage through Homogeneous N-Doping within Highly Branched Tubular Graphitic Foam. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1603692. [PMID: 27911034 DOI: 10.1002/adma.201603692] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 10/24/2016] [Indexed: 05/26/2023]
Abstract
A novel carbon structure, highly branched homogeneous-N-doped graphitic (BNG) tubular foam, is designed via a novel N, N-dimethylformamide (DMF)-mediated chemical vapor deposition method. More structural defects are found at the branched portions as compared with the flat tube domains providing abundant active sites and spacious reservoirs for Li+ storage. An individual BNG branch nanobattery is constructed and tested using in situ transmission electron microscopy and the lithiation process is directly visualized in real time.
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Affiliation(s)
- Jinyang Dong
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing Jiaotong University, Beijing, 100044, P. R. China
| | - Yanming Xue
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki, 3050044, Japan
| | - Chao Zhang
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki, 3050044, Japan
| | - Qunhong Weng
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki, 3050044, Japan
| | - Pengcheng Dai
- Research Institute of Unconventional Petroleum and Renewable Energy, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Yijun Yang
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing Jiaotong University, Beijing, 100044, P. R. China
| | - Min Zhou
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki, 3050044, Japan
| | - Cuiling Li
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki, 3050044, Japan
| | - Qiuhong Cui
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing Jiaotong University, Beijing, 100044, P. R. China
| | - Xiaohong Kang
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing Jiaotong University, Beijing, 100044, P. R. China
| | - Chengchun Tang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, P. R. China
- Hebei Key Laboratory of Boron Nitride Micro- and Nano-Materials, Tianjin, 300130, P. R. China
| | - Yoshio Bando
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki, 3050044, Japan
| | - Dmitri Golberg
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki, 3050044, Japan
| | - Xi Wang
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing Jiaotong University, Beijing, 100044, P. R. China
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Zhou H, Gui P, Yang L, Ye C, Xue M, Mei J, Song Z, Wang H. High performance, self-powered ultraviolet photodetector based on a ZnO nanoarrays/GaN structure with a CdS insert layer. NEW J CHEM 2017. [DOI: 10.1039/c7nj01140g] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A self-powered photodetector based on a ZnO nanoarrays/CdS/GaN structure with a responsivity as high as 176 mA W−1 at 300 nm.
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Affiliation(s)
- Hai Zhou
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials
- Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices
- Faculty of Physics and Electronic Science
- Hubei University
- Wuhan 430062
| | - Pengbin Gui
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials
- Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices
- Faculty of Physics and Electronic Science
- Hubei University
- Wuhan 430062
| | - Lu Yang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials
- Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices
- Faculty of Physics and Electronic Science
- Hubei University
- Wuhan 430062
| | - Cong Ye
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials
- Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices
- Faculty of Physics and Electronic Science
- Hubei University
- Wuhan 430062
| | - Mengni Xue
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials
- Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices
- Faculty of Physics and Electronic Science
- Hubei University
- Wuhan 430062
| | - Jun Mei
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials
- Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices
- Faculty of Physics and Electronic Science
- Hubei University
- Wuhan 430062
| | - Zehao Song
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials
- Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices
- Faculty of Physics and Electronic Science
- Hubei University
- Wuhan 430062
| | - Hao Wang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials
- Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices
- Faculty of Physics and Electronic Science
- Hubei University
- Wuhan 430062
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Zhang X, Liu B, Yang W, Jia W, Li J, Jiang C, Jiang X. 3D-branched hierarchical 3C-SiC/ZnO heterostructures for high-performance photodetectors. NANOSCALE 2016; 8:17573-17580. [PMID: 27714167 DOI: 10.1039/c6nr06236a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The ultra-sensitive photodetection of different wavelengths holds promising applications in high-performance optoelectronic devices and it requires an efficient and suitable semiconductor unit. Herein, we demonstrated the designable synthesis of 3D-branched hierarchical 3C-SiC/ZnO heterostructures by a three-step process and their assembling into an ultrasensitive photodetector. Microstructure analyses using high-resolution transmission electron microscopy reveal that the hierarchical 3C-SiC/ZnO heterostructure is composed of single-crystal 3C-SiC nanowires as a central stem and numerous well-aligned single-crystalline ZnO nanorods as branch shells. Optoelectronic tests on the 3C-SiC/ZnO heterostructure photodetector verify the outstanding photo-detection performance with an ultrahigh EQE (1.69 × 108%), a superior photoresponsivity (4.8 × 105 A W-1), a very fast response time (a rise time of 40 ms and a decay time of 60 ms), a high photo-dark current ratio of 187.8 and an excellent photocurrent stability and reproducibility, which is significantly advantageous or comparable to those of ZnO and other inorganic semiconductor nanostructure based photodetectors. To understand the excellent photodetection of hierarchical 3C-SiC/ZnO heterostructures, a band-gap energy diagram describing the photogenerated electron transport process is plotted and the corresponding mechanism is discussed. The strategy proposed in the present work will open up more opportunities for the design and boost of ultra-sensitive photodetectors based on semiconductor heterostructures.
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Affiliation(s)
- Xinglai Zhang
- Shenyang National Laboratory for Materials Science (SYNL), Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS), School of Materials Science and Engineering, University of Science and Technology of China, No. 72 Wenhua Road, Shenyang 110016, Liaoning, China.
| | - Baodan Liu
- Shenyang National Laboratory for Materials Science (SYNL), Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS), School of Materials Science and Engineering, University of Science and Technology of China, No. 72 Wenhua Road, Shenyang 110016, Liaoning, China.
| | - Wenjin Yang
- Shenyang National Laboratory for Materials Science (SYNL), Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS), School of Materials Science and Engineering, University of Science and Technology of China, No. 72 Wenhua Road, Shenyang 110016, Liaoning, China.
| | - Wenbo Jia
- Shenyang National Laboratory for Materials Science (SYNL), Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS), School of Materials Science and Engineering, University of Science and Technology of China, No. 72 Wenhua Road, Shenyang 110016, Liaoning, China.
| | - Jing Li
- Shenyang National Laboratory for Materials Science (SYNL), Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS), School of Materials Science and Engineering, University of Science and Technology of China, No. 72 Wenhua Road, Shenyang 110016, Liaoning, China.
| | - Chunhai Jiang
- Institute of Advanced Energy Materials, School of Materials Science and Engineering, Xiamen University of Technology, and Key Laboratory of Functional Materials and Applications of Fujian Province, 600 Ligong Road, Jimei District, Xiamen 361024, Fujian, China.
| | - Xin Jiang
- Shenyang National Laboratory for Materials Science (SYNL), Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS), School of Materials Science and Engineering, University of Science and Technology of China, No. 72 Wenhua Road, Shenyang 110016, Liaoning, China.
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Ren L, Chen D, Hu Z, Gao Z, Luo Z, Chen Z, Jiang Y, Zhao B, Wu CML, Shek CH. Facile fabrication and application of SnO2–ZnO nanocomposites: insight into chain-like frameworks, heterojunctions and quantum dots. RSC Adv 2016. [DOI: 10.1039/c6ra19004a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
We report that a novel SnO2–ZnO chain-like heterojunction framework embedded with SnO2 and ZnO quantum-dots shows highly efficient photocatalytic performance.
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Affiliation(s)
- Lanlan Ren
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- People's Republic of China
| | - Dayong Chen
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- People's Republic of China
| | - Zhixiang Hu
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- People's Republic of China
| | - Ziming Gao
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- People's Republic of China
| | - Zhigang Luo
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- People's Republic of China
| | - Zhiwen Chen
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- People's Republic of China
- Department of Physics and Materials Science
| | - Yong Jiang
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- People's Republic of China
| | - Bing Zhao
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- People's Republic of China
| | - C. M. Lawrence Wu
- Department of Physics and Materials Science
- City University of Hong Kong
- Kowloon Tong
- China
| | - Chan-Hung Shek
- Department of Physics and Materials Science
- City University of Hong Kong
- Kowloon Tong
- China
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21
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Panmand RP, Sethi YA, Deokar RS, Late DJ, Gholap HM, Baeg JO, Kale BB. In situ fabrication of highly crystalline CdS decorated Bi2S3 nanowires (nano-heterostructure) for visible light photocatalyst application. RSC Adv 2016. [DOI: 10.1039/c6ra01488g] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Herein, we have demonstrated the in situ synthesis of the orthorhombic Bi2S3 nanowires decorated with hexagonal CdS nanoparticles by facile solvothermal method. The heterostructures have been used as photocatalyst for solar hydrogen production.
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Affiliation(s)
| | - Yogesh A. Sethi
- Centre for Materials for Electronics Technology (C-MET)
- Pune-411008
- India
| | | | - Datta J. Late
- Physical and Materials Chemistry Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
| | | | - Jin-Ook Baeg
- Korea Research Institute of Chemical Technology
- Division of Green Chemistry and Engineering Research
- Daejon
- South Korea
| | - Bharat B. Kale
- Centre for Materials for Electronics Technology (C-MET)
- Pune-411008
- India
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22
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Li Z, Ye L, Lei F, Wang Y, Xu S, Lin S. Enhanced electro-photo synergistic catalysis of Pt (Pd)/ZnO/graphene composite for methanol oxidation under visible light irradiation. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2015.11.149] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Mao Y, Yang Y, Yang H, Han J, Zeng Y, Wei J, Meng X, Wang C. Fabrication and characterization of hierarchical multipod silver citrate complex microcrystals with excellent SERS properties. RSC Adv 2016. [DOI: 10.1039/c6ra00221h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Novel hierarchical multipods silver citrate complexes (SCC) microcrystals have been successfully synthesized in aqueous solution for the first time. The multipods SCC microcrystals showed excellent performance and long-term-stability as SERS substrate.
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Affiliation(s)
- Yongyun Mao
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals
- Kunming Institute of Precious Metals
- Kunming
- China
| | - Yuwen Yang
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals
- Kunming Institute of Precious Metals
- Kunming
- China
| | - Hongwei Yang
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals
- Kunming Institute of Precious Metals
- Kunming
- China
| | - Jiao Han
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals
- Kunming Institute of Precious Metals
- Kunming
- China
| | - Yiming Zeng
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals
- Kunming Institute of Precious Metals
- Kunming
- China
| | - Jianwei Wei
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals
- Kunming Institute of Precious Metals
- Kunming
- China
| | - Xianwei Meng
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals
- Kunming Institute of Precious Metals
- Kunming
- China
| | - Chuan Wang
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals
- Kunming Institute of Precious Metals
- Kunming
- China
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Zhang Q, Li H, Gan L, Ma Y, Golberg D, Zhai T. In situ fabrication and investigation of nanostructures and nanodevices with a microscope. Chem Soc Rev 2016; 45:2694-713. [DOI: 10.1039/c6cs00161k] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The widespread availability of nanostructures and nanodevices has placed strict requirements on their comprehensive characterization.
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Affiliation(s)
- Qi Zhang
- State Key Laboratory of Material Processing and Die & Mould Technology
- School of Materials Science and Engineering
- Huazhong University of Science and Technology (HUST)
- Wuhan 430074
- P. R. China
| | - Huiqiao Li
- State Key Laboratory of Material Processing and Die & Mould Technology
- School of Materials Science and Engineering
- Huazhong University of Science and Technology (HUST)
- Wuhan 430074
- P. R. China
| | - Lin Gan
- State Key Laboratory of Material Processing and Die & Mould Technology
- School of Materials Science and Engineering
- Huazhong University of Science and Technology (HUST)
- Wuhan 430074
- P. R. China
| | - Ying Ma
- State Key Laboratory of Material Processing and Die & Mould Technology
- School of Materials Science and Engineering
- Huazhong University of Science and Technology (HUST)
- Wuhan 430074
- P. R. China
| | - Dmitri Golberg
- International Center for Materials Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Ibaraki 305-0044
- Japan
| | - Tianyou Zhai
- State Key Laboratory of Material Processing and Die & Mould Technology
- School of Materials Science and Engineering
- Huazhong University of Science and Technology (HUST)
- Wuhan 430074
- P. R. China
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25
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Kumar P, Saxena N, Dewan S, Singh F, Gupta V. Giant UV-sensitivity of ion beam irradiated nanocrystalline CdS thin films. RSC Adv 2016. [DOI: 10.1039/c5ra21026g] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A highly sensitive UV-detector is devised for the first time from ion beam irradiated nanocrystalline CdS thin films. The sensor exhibits improvements in the responsivity, photosensitivity, and efficiency as a function of ion fluence.
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Affiliation(s)
- Pragati Kumar
- Department of Physics & Astrophysics
- University of Delhi
- Delhi
- India-110 007
| | - Nupur Saxena
- Department of Physics & Astrophysics
- University of Delhi
- Delhi
- India-110 007
| | - Sheetal Dewan
- Department of Physics & Astrophysics
- University of Delhi
- Delhi
- India-110 007
| | - Fouran Singh
- Inter University Accelerator Centre
- New Delhi
- India
| | - Vinay Gupta
- Department of Physics & Astrophysics
- University of Delhi
- Delhi
- India-110 007
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26
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Chang CM, Hsu CH, Liu YW, Chien TC, Sung CH, Yeh PH. Interface engineering: broadband light and low temperature gas detection abilities using a nano-heterojunction device. NANOSCALE 2015; 7:20126-20131. [PMID: 26567487 DOI: 10.1039/c5nr05879a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Herein, we have designed a nano-heterojunction device using interface defects and band bending effects, which can have broadband light detection (from 365-940 nm) and low operating temperature (50 °C) gas detection abilities. The broadband light detection mechanism occurs because of the defects and band bending between the heterojunction interface. We have demonstrated this mechanism using CoSi2/SnO2, CoSi2/TiO2, Ge/SnO2 and Ge/TiO2 nano-heterojunction devices, and all these devices show broadband light detection ability. Furthermore, the nano-heterojunction of the nano-device has a local Joule-heating effect. For gas detection, the results show that the nano-heterojunction device presents a high detection ability. The reset time and sensitivity of the nano-heterojunction device are an order faster and larger than Schottky-contacted devices (previous works), which is due to the local Joule-heating effect between the interface of the nano-heterojunction. Based on the abovementioned idea, we can design diverse nano-devices for widespread use.
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Affiliation(s)
- Chien-Min Chang
- Department of Physics, Tamkang University, Tamsui, New Taipei City, 25137, Taiwan.
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27
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Li L, Lou Z, Shen G. Hierarchical CdS Nanowires Based Rigid and Flexible Photodetectors with Ultrahigh Sensitivity. ACS APPLIED MATERIALS & INTERFACES 2015; 7:23507-14. [PMID: 26439364 DOI: 10.1021/acsami.5b06070] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Hierarchical CdS nanowires were synthesized via a facile vapor transport method, which were used to fabricate both rigid and flexible visible-light photodetectors. Studies found that the rigid photodetectors on SiO2/Si substrate showed ultrahigh photo-dark current ratio up to 1.96 × 10(4), several orders of magnitude higher than previously reported CdS nanostructures, as well as high specific detectivity (4.27 × 10(12) Jones), fast response speed and excellent environmental stability. Highly flexible photodetectors were also fabricated on polyimide substrate, which exhibited comparable photoresponse performance as the rigid one. In addition, the as-prepared flexible devices displayed excellent mechanical flexibility, electrical stability and folding endurance. The results indicate that the hierarchical CdS nanowires may be good candidates for nanoscale optoelectronic devices such as high-efficiency photoswitches and highly photosensitive detectors.
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Affiliation(s)
- Ludong Li
- State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences , Beijing 100083, China
| | - Zheng Lou
- State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences , Beijing 100083, China
| | - Guozhen Shen
- State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences , Beijing 100083, China
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28
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Zhu L, Hong M, Wei Ho G. Hierarchical Assembly of SnO2/ZnO Nanostructures for Enhanced Photocatalytic Performance. Sci Rep 2015; 5:11609. [PMID: 26109295 PMCID: PMC4479871 DOI: 10.1038/srep11609] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Accepted: 05/15/2015] [Indexed: 12/04/2022] Open
Abstract
SnO2/ZnO hierarchical heterostructures have been successfully synthesized by combining electrospinning technique and hydrothermal method. Various morphologies of the secondary ZnO nanostructures including nanorods (NRs) and nanosheets (NSs) can be tailored by adding surfactants. Photocatalytic performance of the heterostructures was investigated and obvious enhancement was demonstrated in degradation of the organic pollutant, compared to the primary SnO2-based nanofibers (NFs) and bare ZnO. Furthermore, it was found that the H2 evolution from water splitting was achieved by photocatalysis of heterostructured nanocomposites after sulfurization treatment. This synthetic methodology described herein promises to be an effective approach for fabricating variety of nanostructures for enhanced catalytic applications. The heterostructured nanomaterials have considerable potential to address the environmental and energy issues via degradation of pollutant and generation of clean H2 fuel.
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Affiliation(s)
- Liangliang Zhu
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, 117583, Singapore
| | - Minghui Hong
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, 117583, Singapore.,Engineering Science Programme, National University of Singapore, 9 Engineering Drive 1, 117575, Singapore
| | - Ghim Wei Ho
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, 117583, Singapore.,Engineering Science Programme, National University of Singapore, 9 Engineering Drive 1, 117575, Singapore.,Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, 117602, Singapore
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29
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Lee W, Kang S, Hwang T, Kim K, Woo H, Lee B, Kim J, Kim J, Park B. Facile Conversion Synthesis of Densely-Formed Branched ZnO-Nanowire Arrays for Quantum-Dot-Sensitized Solar Cells. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.03.095] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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30
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Zhang C, Xu Z, Tian W, Tang DM, Wang X, Bando Y, Fukata N, Golberg D. In situ fabrication and optoelectronic analysis of axial CdS/p-Si nanowire heterojunctions in a high-resolution transmission electron microscope. NANOTECHNOLOGY 2015; 26:154001. [PMID: 25797523 DOI: 10.1088/0957-4484/26/15/154001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A high-precision technique was utilized to construct and characterize axial nanowire heterojunctions inside a high-resolution transmission electron microscope (HRTEM). By an in-tandem technique using an ultra-sharp tungsten probe as the nanomanipulator and an optical fiber as the optical waveguide the nanoscale CdS/p-Si axial nanowire junctions were fabricated, and in situ photocurrents from them were successfully measured. Compared to a single constituting nanowire, the CdS/p-Si axial nanowire junctions possess a photocurrent saturation effect, which protects them from damage under high voltages. Furthermore, a set of experiments reveals the clear relationship between the saturation photocurrent values and the incident light intensities. The applied technique is expected to be valuable for bottom-up nanodevice fabrications, and the regarded photocurrent saturation feature may solve the Joule heating-induced failure problem in nanowire optoelectronic devices caused by a fluctuating bias.
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Affiliation(s)
- Chao Zhang
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 3050044, Japan. Graduate School of Pure and Applied Sciences, Tennodai 1, University of Tsukuba, Tsukuba, Ibaraki 3058577, Japan
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Liu H, Cao F, Zheng H, Sheng H, Li L, Wu S, Liu C, Wang J. In situ observation of the sodiation process in CuO nanowires. Chem Commun (Camb) 2015; 51:10443-6. [DOI: 10.1039/c5cc03734d] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We observed the dynamic evolution of the morphology and phase transformations of CuO nanowires during sodiation using in situ transmission electron microscopy. These results will facilitate our fundamental understanding of the sodiation mechanism of CuO nanostructures used as electrode materials in sodium ion batteries.
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Affiliation(s)
- Huihui Liu
- School of Physics and Technology
- Center for Electron Microscopy and MOE Key Laboratory of Artificial Micro- and Nano-structures
- Wuhan University
- Wuhan 430072
- China
| | - Fan Cao
- School of Physics and Technology
- Center for Electron Microscopy and MOE Key Laboratory of Artificial Micro- and Nano-structures
- Wuhan University
- Wuhan 430072
- China
| | - He Zheng
- School of Physics and Technology
- Center for Electron Microscopy and MOE Key Laboratory of Artificial Micro- and Nano-structures
- Wuhan University
- Wuhan 430072
- China
| | - Huaping Sheng
- School of Physics and Technology
- Center for Electron Microscopy and MOE Key Laboratory of Artificial Micro- and Nano-structures
- Wuhan University
- Wuhan 430072
- China
| | - Lei Li
- School of Physics and Technology
- Center for Electron Microscopy and MOE Key Laboratory of Artificial Micro- and Nano-structures
- Wuhan University
- Wuhan 430072
- China
| | - Shujing Wu
- School of Physics and Technology
- Center for Electron Microscopy and MOE Key Laboratory of Artificial Micro- and Nano-structures
- Wuhan University
- Wuhan 430072
- China
| | - Chun Liu
- School of Physics and Technology
- Center for Electron Microscopy and MOE Key Laboratory of Artificial Micro- and Nano-structures
- Wuhan University
- Wuhan 430072
- China
| | - Jianbo Wang
- School of Physics and Technology
- Center for Electron Microscopy and MOE Key Laboratory of Artificial Micro- and Nano-structures
- Wuhan University
- Wuhan 430072
- China
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Golberg D, Zhang C, Xu Z. Cubic lattice nanosheets: thickness-driven light emission. ACS NANO 2014; 8:6516-6519. [PMID: 24987789 DOI: 10.1021/nn502999g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Silicon has a diamond-like cubic crystal lattice for which two-dimensional (2D) nanometer thickness nanosheet crystallization appears not to be trivial. However, in this issue of ACS Nano, the group led by Heon-Jin Choi demonstrates the gas-phase dendritic growth of Si nanosheets, only 1 to 13 nm thick. Moreover, such nanosheets display strong thickness-dependent photoluminescence in a visible range with red, green, and blue emission each documented.
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Affiliation(s)
- Dmitri Golberg
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1, Tsukuba, Ibaraki 3050044, Japan
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