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Tamayo A, Danowski W, Han B, Jeong Y, Samorì P. Light-Modulated Humidity Sensing in Spiropyran Functionalized MoS 2 Transistors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2404633. [PMID: 39263764 DOI: 10.1002/smll.202404633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2024] [Revised: 08/13/2024] [Indexed: 09/13/2024]
Abstract
The optically tuneable nature of hybrid organic/inorganic heterostructures tailored by interfacing photochromic molecules with 2D semiconductors (2DSs) can be exploited to endow multi-responsiveness to the exceptional physical properties of 2DSs. In this study, a spiropyran-molybdenum disulfide (MoS2) light-switchable bi-functional field-effect transistor is realized. The spiropyran-merocyanine reversible photo-isomerization has been employed to remotely control both the electron transport and wettability of the hybrid structure. This manipulation is instrumental for tuning the sensitivity in humidity sensing. The hybrid organic/inorganic heterostructure is subjected to humidity testing, demonstrating its ability to accurately monitor relative humidity (RH) across a range of 10%-75%. The electrical output shows good sensitivity of 1.0% · (%) RH-1. The light-controlled modulation of the sensitivity in chemical sensors can significantly improve their selectivity, versatility, and overall performance in chemical sensing.
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Affiliation(s)
- Adrián Tamayo
- Institut de Science et d'Ingénierie Supramoléculaires, Université de Strasbourg & CNRS, 8 Allée Gaspard Monge, Strasbourg, 67000, France
| | - Wojciech Danowski
- Institut de Science et d'Ingénierie Supramoléculaires, Université de Strasbourg & CNRS, 8 Allée Gaspard Monge, Strasbourg, 67000, France
- Faculty of Chemistry, University of Warsaw, Warsaw, 02-093, Poland
| | - Bin Han
- Institut de Science et d'Ingénierie Supramoléculaires, Université de Strasbourg & CNRS, 8 Allée Gaspard Monge, Strasbourg, 67000, France
| | - Yeonsu Jeong
- Institut de Science et d'Ingénierie Supramoléculaires, Université de Strasbourg & CNRS, 8 Allée Gaspard Monge, Strasbourg, 67000, France
| | - Paolo Samorì
- Institut de Science et d'Ingénierie Supramoléculaires, Université de Strasbourg & CNRS, 8 Allée Gaspard Monge, Strasbourg, 67000, France
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2
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Xue G, Qin B, Ma C, Yin P, Liu C, Liu K. Large-Area Epitaxial Growth of Transition Metal Dichalcogenides. Chem Rev 2024; 124:9785-9865. [PMID: 39132950 DOI: 10.1021/acs.chemrev.3c00851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/13/2024]
Abstract
Over the past decade, research on atomically thin two-dimensional (2D) transition metal dichalcogenides (TMDs) has expanded rapidly due to their unique properties such as high carrier mobility, significant excitonic effects, and strong spin-orbit couplings. Considerable attention from both scientific and industrial communities has fully fueled the exploration of TMDs toward practical applications. Proposed scenarios, such as ultrascaled transistors, on-chip photonics, flexible optoelectronics, and efficient electrocatalysis, critically depend on the scalable production of large-area TMD films. Correspondingly, substantial efforts have been devoted to refining the synthesizing methodology of 2D TMDs, which brought the field to a stage that necessitates a comprehensive summary. In this Review, we give a systematic overview of the basic designs and significant advancements in large-area epitaxial growth of TMDs. We first sketch out their fundamental structures and diverse properties. Subsequent discussion encompasses the state-of-the-art wafer-scale production designs, single-crystal epitaxial strategies, and techniques for structure modification and postprocessing. Additionally, we highlight the future directions for application-driven material fabrication and persistent challenges, aiming to inspire ongoing exploration along a revolution in the modern semiconductor industry.
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Affiliation(s)
- Guodong Xue
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing 100871, China
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Biao Qin
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing 100871, China
| | - Chaojie Ma
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing 100871, China
| | - Peng Yin
- Key Laboratory of Quantum State Construction and Manipulation (Ministry of Education), Department of Physics, Renmin University of China, Beijing 100872, China
| | - Can Liu
- Key Laboratory of Quantum State Construction and Manipulation (Ministry of Education), Department of Physics, Renmin University of China, Beijing 100872, China
| | - Kaihui Liu
- State Key Laboratory for Mesoscopic Physics, Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing 100871, China
- International Centre for Quantum Materials, Collaborative Innovation Centre of Quantum Matter, Peking University, Beijing 100871, China
- Songshan Lake Materials Laboratory, Dongguan 523808, China
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3
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Jahn YM, Alboteanu G, Mordehai D, Ya'akobovitz A. Strain engineering of the mechanical properties of two-dimensional WS 2. NANOSCALE ADVANCES 2024; 6:4062-4070. [PMID: 39114146 PMCID: PMC11302181 DOI: 10.1039/d3na00990d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 06/26/2024] [Indexed: 08/10/2024]
Abstract
Tuning the physical properties of two-dimensional (2D) materials is crucial for their successful integration into advanced applications. While strain engineering demonstrated an efficient means to modulate the electrical and optical properties of 2D materials, tuning their mechanical properties has not been carried out. Here we applied compressive strain through the buckling metrology to 2D tungsten disulfide (WS2), which demonstrated mechanical softening manifested by the reduction of its effective Young's modulus. Raman modes analysis of the strained WS2 also showed strain-dependent vibrational modes softening and revealed its Grüneisen parameter (γ E2g = 0.29) and its shear deformation potential (β E2g = 0.56) - both are similar to the values of other 2D materials. In parallel, we conducted a molecular dynamic simulation that confirmed the validity of continuum mechanics modeling in the nanoscale and revealed that due to sequential atomic-scale buckling events in compressed WS2, it shows a mechanical softening. Therefore, by tuning the mechanical properties of WS2 we shed light on its fundamental physics, thus making it an attractive candidate material for high-end applications, such as tunable sensors and flexible optoelectronic devices.
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Affiliation(s)
- Yarden Mazal Jahn
- Department of Mechanical Engineering, Faculty of Engineering Sciences, Ben-Gurion University of the Negev Israel
| | - Guy Alboteanu
- Department of Mechanical Engineering, Faculty of Engineering Sciences, Ben-Gurion University of the Negev Israel
| | - Dan Mordehai
- Faculty of Mechanical Engineering, Technion Israel Institute of Technology Haifa Israel
| | - Assaf Ya'akobovitz
- Department of Mechanical Engineering, Faculty of Engineering Sciences, Ben-Gurion University of the Negev Israel
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Zhang L, Chen C, Zhang H. Preparation and Mechanism Analysis of High-Performance Humidity Sensor Based on Eu-Doped TiO 2. SENSORS (BASEL, SWITZERLAND) 2024; 24:4142. [PMID: 39000920 PMCID: PMC11244058 DOI: 10.3390/s24134142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 06/21/2024] [Accepted: 06/24/2024] [Indexed: 07/16/2024]
Abstract
TiO2 is a typical semiconductor material, and it has attracted much attention in the field of humidity sensors. Doping is an efficient way to enhance the humidity response of TiO2. Eu-doped TiO2 material was investigated in both theoretical simulations and experiments. In a simulation based on density functional theory, a doped Eu atom can increase the performance of humidity sensors by producing more oxygen vacancies than undoped TiO2. In these experiments, Eu-doped TiO2 nanorods were prepared by hydrothermal synthesis, and the results also confirm the theoretical prediction. When the doping mole ratio is 5 mol%, the response of the humidity sensor reaches 23,997.0, the wet hysteresis is 2.3% and the response/recovery time is 3/13.1 s. This study not only improves the basis for preparation of high-performance TiO2 humidity sensors, but also fills the research gap on rare earth Eu-doped TiO2 as a humidity-sensitive material.
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Affiliation(s)
- Ling Zhang
- School of Physical Science and Technology, Xinjiang University, Urumqi 830017, China; (L.Z.); (C.C.)
| | - Chu Chen
- School of Physical Science and Technology, Xinjiang University, Urumqi 830017, China; (L.Z.); (C.C.)
- Xinjiang Key Laboratory of Solid State Physics and Devices, Xinjiang University, Urumqi 830017, China
| | - Hongyan Zhang
- School of Physical Science and Technology, Xinjiang University, Urumqi 830017, China; (L.Z.); (C.C.)
- Xinjiang Key Laboratory of Solid State Physics and Devices, Xinjiang University, Urumqi 830017, China
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5
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Sharma M, Mazumder N, Ajayan PM, Deb P. Quantum enhanced efficiency and spectral performance of paper-based flexible photodetectors functionalized with two dimensional materials. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2024; 36:283001. [PMID: 38574668 DOI: 10.1088/1361-648x/ad3abf] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 04/04/2024] [Indexed: 04/06/2024]
Abstract
Flexible photodetectors (PDs) have exotic significance in recent years due to their enchanting potential in future optoelectronics. Moreover, paper-based fabricated PDs with outstanding flexibility unlock new avenues for future wearable electronics. Such PD has captured scientific interest for its efficient photoresponse properties due to the extraordinary assets like significant absorptive efficiency, surface morphology, material composition, affordability, bendability, and biodegradability. Quantum-confined materials harness the unique quantum-enhanced properties and hold immense promise for advancing both fundamental scientific understanding and practical implication. Two-dimensional (2D) materials as quantum materials have been one of the most extensively researched materials owing to their significant light absorption efficiency, increased carrier mobility, and tunable band gaps. In addition, 2D heterostructures can trap charge carriers at their interfaces, leading increase in photocurrent and photoconductivity. This review represents comprehensive discussion on recent developments in such PDs functionalized by 2D materials, highlighting charge transfer mechanism at their interface. This review thoroughly explains the mechanism behind the enhanced performance of quantum materials across a spectrum of figure of merits including external quantum efficiency, detectivity, spectral responsivity, optical gain, response time, and noise equivalent power. The present review studies the intricate mechanisms that reinforce these improvements, shedding light on the intricacies of quantum materials and their significant capabilities. Moreover, a detailed analysis of the technical applicability of paper-based PDs has been discussed with challenges and future trends, providing comprehensive insights into their practical usage in the field of future wearable and portable electronic technologies.
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Affiliation(s)
- Monika Sharma
- Advanced Functional Material Laboratory (AFML), Department of Physics, Tezpur University, (Central University), Tezpur 784028, India
| | - Nirmal Mazumder
- Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - Pulickel M Ajayan
- Department of Materials Science and Nano Engineering, Rice University, Houston, TX 77005, United States of America
| | - Pritam Deb
- Advanced Functional Material Laboratory (AFML), Department of Physics, Tezpur University, (Central University), Tezpur 784028, India
- Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
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Li S, Chen Y, Zhang J, Zhou J, Yang S, Liu Y, Xiong J, Liu X, Li J, Huo N. Highly Sensitive Broadband Polarized Photodetector Based on the As 0.6P 0.4/WSe 2 Heterostructure toward Imaging and Optical Communication Application. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38422468 DOI: 10.1021/acsami.3c19422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
Polarization-sensitive photodetectors based on two-dimensional anisotropic materials still encounter the issues of narrow spectral coverage and low polarization sensitivity. To address these obstacles, anisotropic As0.6P0.4 with a narrow band gap has been integrated with WSe2 to construct a type-II heterostructure, realizing a high-performance polarization-sensitive photodetector with broad spectral range from 405 to 2200 nm. By operating in photovoltaic mode at zero bias, the device shows a very low dark current of ∼0.02 picoampere, high responsivity of 492 m A/W, and high photoswitching ratio of 6 × 104, yielding a high specific detectivity of 1.4 × 1012 Jones. The strong in-plane anisotropy of As0.6P0.4 endows the device with a capability of polarization-sensitive detection with a high polarization ratio of 6.85 under a bias voltage. As an image sensor and signal receiver, the device shows great potential in imaging and optical communication applications. This work develops an anisotropic vdW heterojunction to realize polarization-sensitive photodetectors with wide spectral coverage, fast response, and high sensitivity, providing a new candidate for potential applications of polarization-resolved electronics and photonics.
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Affiliation(s)
- Sina Li
- School of Semiconductor Science and Technology, South China Normal University, Foshan 528000, P. R. China
- Guangdong Provincial Key Laboratory of Chip and Integration Technology, Guangzhou 510631, P. R. China
| | - Yang Chen
- School of Semiconductor Science and Technology, South China Normal University, Foshan 528000, P. R. China
| | - Jielian Zhang
- School of Semiconductor Science and Technology, South China Normal University, Foshan 528000, P. R. China
- Guangdong Provincial Key Laboratory of Chip and Integration Technology, Guangzhou 510631, P. R. China
| | - Junjie Zhou
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, P. R. China
| | - Sixian Yang
- School of Semiconductor Science and Technology, South China Normal University, Foshan 528000, P. R. China
- Guangdong Provincial Key Laboratory of Chip and Integration Technology, Guangzhou 510631, P. R. China
| | - Yue Liu
- School of Semiconductor Science and Technology, South China Normal University, Foshan 528000, P. R. China
| | - Jingxian Xiong
- Frontier Interdisciplinary College, National University of Defense Technology, Changsha 410000, P. R. China
| | - Xinke Liu
- College of Materials Science and Engineering, Shenzhen University, Shenzhen 518000, P. R. China
| | - Jingbo Li
- Guangdong Provincial Key Laboratory of Chip and Integration Technology, Guangzhou 510631, P. R. China
- College of Physics and Optoelectronic Engineering, Zhejiang University, Hangzhou 310000, P. R. China
| | - Nengjie Huo
- School of Semiconductor Science and Technology, South China Normal University, Foshan 528000, P. R. China
- Guangdong Provincial Key Laboratory of Chip and Integration Technology, Guangzhou 510631, P. R. China
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7
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Kim BQ, Füredi M, Venkatesh RB, Guldin S, Lee D. Water-Induced Separation of Polymers from High Nanoparticle-Content Nanocomposite Films. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2302676. [PMID: 37263985 DOI: 10.1002/smll.202302676] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/09/2023] [Indexed: 06/03/2023]
Abstract
Polymer nanocomposites with high loadings of nanoparticles (NPs) exhibit exceptional mechanical and transport properties. Separation of polymers and NPs from such nanocomposites is a critical step in enabling the recycling of these components and reducing the potential environmental hazards that can be caused by the accumulation of nanocomposite wastes in landfills. However, the separation typically requires the use of organic solvents or energy-intensive processes. Using polydimethylsiloxane (PDMS)-infiltrated SiO2 NP films, we demonstrate that the polymers can be separated from the SiO2 NP packings when these nanocomposites are exposed to high humidity and water. The findings indicate that the charge state of the NPs plays a significant role in the propensity of water to undergo capillary condensation within the PDMS-filled interstitial pores. We also show that the size of NPs has a crucial impact on the kinetics and extent of PDMS expulsion, illustrating the importance of capillary forces in inducing PDMS expulsion. We demonstrate that the separated polymer can be collected and reused to produce a new nanocomposite film. The work provides insightful guidelines on how to design and fabricate end-of-life recyclable high-performance nanocomposites.
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Affiliation(s)
- Baekmin Q Kim
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Máté Füredi
- Department of Chemical Engineering, University College London, London, WC1E 7JE, UK
| | - R Bharath Venkatesh
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Stefan Guldin
- Department of Chemical Engineering, University College London, London, WC1E 7JE, UK
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
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8
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Xu Y, Liu S, Zhang J, Chai S, Li J, Xue C, Wu S. Fabrication of Micro-Cantilever Sensor Based on Clay Minerals for Humidity Detection. SENSORS (BASEL, SWITZERLAND) 2023; 23:6962. [PMID: 37571744 PMCID: PMC10422566 DOI: 10.3390/s23156962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 07/26/2023] [Accepted: 08/02/2023] [Indexed: 08/13/2023]
Abstract
In this paper, novel humidity sensors based on montmorillonite, kaolinite, and composite films coated on micro-cantilevers were prepared to measure the relative humidity (RH) values by the deflection of a micro-cantilever (MC) at room temperature. The humidity-sensing properties, such as response and recovery, sensitivity, repeatability, humidity hysteresis, and long-term stability, were investigated in the range of working humidity (10-80% RH). The humidity response in the close humidity range of 10% RH to 80% RH revealed a linear increase in water absorption of montmorillonite, kaolinite, and montmorillonite/kaolinite mixed dispersant (1:1) as a function of RH with linear correlation factors between the humidity change and deflection estimated to be 0.994, 0.991, and 0.946, respectively. Montmorillonite's sensitivity was better than kaolinite's, with the mixed-clay mineral film's response falling somewhere in between. This research provides a feasible and effective approach to constructing high-performance MC humidity sensors that can be operated at room temperature based on clay minerals.
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Affiliation(s)
- Yiting Xu
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China
| | - Song Liu
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China
| | - Junfeng Zhang
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China
| | - Songyang Chai
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China
| | - Jianjun Li
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China
| | - Changguo Xue
- School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230026, China
| | - Shangquan Wu
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230026, China
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9
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Bangolla HK, Lee YC, Shen WC, Ulaganathan RK, Sankar R, Du HY, Chen RS. Photoconduction Properties in Tungsten Disulfide Nanostructures. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2190. [PMID: 37570508 PMCID: PMC10421469 DOI: 10.3390/nano13152190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/23/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023]
Abstract
We reported the photoconduction properties of tungsten disulfide (WS2) nanoflakes obtained by the mechanical exfoliation method. The photocurrent measurements were carried out using a 532 nm laser source with different illumination powers. The results reveal a linear dependence of photocurrent on the excitation power, and the photoresponsivity shows an independent behavior at higher light intensities (400-4000 Wm-2). The WS2 photodetector exhibits superior performance with responsivity in the range of 36-73 AW-1 and a normalized gain in the range of 3.5-7.3 10-6 cm2V-1 at a lower bias voltage of 1 V. The admirable photoresponse at different light intensities suggests that WS2 nanostructures are of potential as a building block for novel optoelectronic device applications.
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Affiliation(s)
- Hemanth Kumar Bangolla
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan;
| | - Yueh-Chien Lee
- Department of Electronic Engineering, Lunghwa University of Science and Technology, Taoyuan 33306, Taiwan;
| | - Wei-Chu Shen
- Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan;
| | | | - Raman Sankar
- Institute of Physics, Academia Sinica, Taipei 115201, Taiwan; (R.K.U.); (R.S.)
| | - He-Yun Du
- Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
| | - Ruei-San Chen
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan;
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10
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Ye X, Du Y, Wang M, Liu B, Liu J, Jafri SHM, Liu W, Papadakis R, Zheng X, Li H. Advances in the Field of Two-Dimensional Crystal-Based Photodetectors. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1379. [PMID: 37110964 PMCID: PMC10146229 DOI: 10.3390/nano13081379] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 03/27/2023] [Accepted: 04/14/2023] [Indexed: 06/19/2023]
Abstract
Two-dimensional (2D) materials have sparked intense interest among the scientific community owing to their extraordinary mechanical, optical, electronic, and thermal properties. In particular, the outstanding electronic and optical properties of 2D materials make them show great application potential in high-performance photodetectors (PDs), which can be applied in many fields such as high-frequency communication, novel biomedical imaging, national security, and so on. Here, the recent research progress of PDs based on 2D materials including graphene, transition metal carbides, transition-metal dichalcogenides, black phosphorus, and hexagonal boron nitride is comprehensively and systematically reviewed. First, the primary detection mechanism of 2D material-based PDs is introduced. Second, the structure and optical properties of 2D materials, as well as their applications in PDs, are heavily discussed. Finally, the opportunities and challenges of 2D material-based PDs are summarized and prospected. This review will provide a reference for the further application of 2D crystal-based PDs.
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Affiliation(s)
- Xiaoling Ye
- Shandong Technology Centre of Nanodevices and Integration, School of Microelectronics, Shandong University, Jinan 250101, China; (X.Y.); (Y.D.); (M.W.); (B.L.); (W.L.)
| | - Yining Du
- Shandong Technology Centre of Nanodevices and Integration, School of Microelectronics, Shandong University, Jinan 250101, China; (X.Y.); (Y.D.); (M.W.); (B.L.); (W.L.)
| | - Mingyang Wang
- Shandong Technology Centre of Nanodevices and Integration, School of Microelectronics, Shandong University, Jinan 250101, China; (X.Y.); (Y.D.); (M.W.); (B.L.); (W.L.)
| | - Benqing Liu
- Shandong Technology Centre of Nanodevices and Integration, School of Microelectronics, Shandong University, Jinan 250101, China; (X.Y.); (Y.D.); (M.W.); (B.L.); (W.L.)
| | - Jiangwei Liu
- School of Energy and Power Engineering, Shandong University, Jinan 250061, China;
| | - Syed Hassan Mujtaba Jafri
- Department of Electrical Engineering, Mirpur University of Science and Technology (MUST), Mirpur Azad Jammu and Kashmir 10250, Pakistan;
| | - Wencheng Liu
- Shandong Technology Centre of Nanodevices and Integration, School of Microelectronics, Shandong University, Jinan 250101, China; (X.Y.); (Y.D.); (M.W.); (B.L.); (W.L.)
| | - Raffaello Papadakis
- Department of Chemistry, Uppsala University, 75120 Uppsala, Sweden;
- TdB Labs AB, Uppsala Business Park, 75450 Uppsala, Sweden
| | - Xiaoxiao Zheng
- Shandong Technology Centre of Nanodevices and Integration, School of Microelectronics, Shandong University, Jinan 250101, China; (X.Y.); (Y.D.); (M.W.); (B.L.); (W.L.)
| | - Hu Li
- Shandong Technology Centre of Nanodevices and Integration, School of Microelectronics, Shandong University, Jinan 250101, China; (X.Y.); (Y.D.); (M.W.); (B.L.); (W.L.)
- Shenzhen Research Institute of Shandong University, Shenzhen 518057, China
- Department of Materials Science and Engineering, Uppsala University, 75121 Uppsala, Sweden
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11
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Liang Z, Zhang X, Yang J, Cheng Y, Hou H, Hussain S, Liu J, Qiao G, Liu G. Facile fabrication of nanoflower-like WO 3/WS 2 heterojunction for highly sensitive NO 2 detection at room temperature. JOURNAL OF HAZARDOUS MATERIALS 2023; 443:130316. [PMID: 36370477 DOI: 10.1016/j.jhazmat.2022.130316] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 09/29/2022] [Accepted: 11/01/2022] [Indexed: 06/16/2023]
Abstract
Realizing efficient detection of ultra-low concentrations of hazardous gases contributes to air pollution monitoring, ecosystem and human health protection. Herein, we firstly fabricated the nanoflower-like WO3/WS2 composites by a facile process to highly sensitively detect NO2 at room temperature. The WO3 content in the WO3/WS2 composites can be adjusted by altering the calcination temperature, and the WO3 nanoparticles disperse uniformly on the WS2 surface, forming the WO3/WS2 heterojunction. The room-temperature responses of WO3/WS2 composites gradually climb with the NO2 concentration increasing from 0.005 to 5 ppm, and the WW-280 and WW-300 composites possess the optimal gas sensitivity when the NO2 concentrations are lower and higher than 100 ppb, respectively. In particular, the two WO3/WS2 composites present the limitation of detection (LOD) of ≤ 5 ppb, and they exhibit the excellent selectivity, good reproducibility and long-term stability towards NO2. A possible gas sensing mechanism was also proposed from the point of views of gas adsorption, redox reactions and electron transfer. The appropriate WO3 content and molar ratio of hexagonal to monoclinic WO3, and the formation of WO3/WS2 p-n heterojunction can contribute to the high sensitivity of WO3/WS2 composite to various concentrations of NO2. This work offers a promising gas sensing material for room-temperature detection to low concentrations of NO2.
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Affiliation(s)
- Zhiping Liang
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xiangzhao Zhang
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Jian Yang
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yu Cheng
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Haigang Hou
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Shahid Hussain
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Junlin Liu
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Guanjun Qiao
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Guiwu Liu
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China.
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12
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Mohsseni Ahangar R, Farmanzadeh D. O-doping effects on the adsorption and detection of acetaldehyde and ethylene oxide on phosphorene monolayer: A DFT investigation. Chem Phys Lett 2023. [DOI: 10.1016/j.cplett.2023.140315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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13
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Liu F, Zhou H, Gu Y, Dong Z, Yang Y, Wang Z, Zhang T, Wu W. Solution Processed Photodetectors with PVK-WS 2 Nanotube/Nanofullerene Organic-Inorganic Hybrid Films. ACS APPLIED MATERIALS & INTERFACES 2022; 14:43612-43620. [PMID: 36099066 DOI: 10.1021/acsami.2c10745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Organic-inorganic hybrid photodetectors have attracted increased interest due to their exceptional properties, such as flexibility, transparency, and low cost for many promising applications. Low-dimensional tungsten disulfide (WS2) nanostructures have outstanding electrical and optical properties, making them ideal candidates for ultrasensitive photodetector devices. In this paper, photodetectors were fabricated with hybrid thin films containing two different WS2 nanomaterials, one-dimensional (1D) WS2 nanotubes (WS2-NTs) and a zero-dimensional (0D) WS2 nanofullerene (WS2-FLs) hybrid with poly(N-vinyl carbazole) (PVK). The electrical responses of the devices under visible-light illuminations were studied. The photodetector devices with 0D WS2-FLs/PVK hybrid thin films have relatively higher sensitivity and stable voltage responses to visible light. Besides, the hybrid film shows a strong surface-enhanced Raman effect (SERS). These materials and new strategies enable the creation of a new class of processed photodetectors for practical applications.
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Affiliation(s)
- Fenghua Liu
- Laboratory of Thin Film Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai201800, People's Republic of China
- State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai201800, People's Republic of China
- Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai201800, People's Republic of China
| | - Huanli Zhou
- Joint International Research Laboratory of Information Display and Visualization, School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, People's Republic of China
| | - Yunjiao Gu
- Laboratory of Thin Film Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai201800, People's Republic of China
- State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai201800, People's Republic of China
- Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai201800, People's Republic of China
| | - Zhenbiao Dong
- School of Mechanical Engineering, Shanghai Institute of Technology, Shanghai, 201418, People's Republic of China
| | - Yi Yang
- Joint International Research Laboratory of Information Display and Visualization, School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, People's Republic of China
| | - Zan Wang
- Laboratory of Thin Film Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai201800, People's Republic of China
- State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai201800, People's Republic of China
- Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai201800, People's Republic of China
| | - Tong Zhang
- Joint International Research Laboratory of Information Display and Visualization, School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, People's Republic of China
| | - Weiping Wu
- Laboratory of Thin Film Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai201800, People's Republic of China
- State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai201800, People's Republic of China
- Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai201800, People's Republic of China
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14
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Vertically aligned 1T-WS2 nanosheets supported on carbon cloth as a high-performance flexible photocatalyst. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129533] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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15
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Lu Y, Yang G, Shen Y, Yang H, Xu K. Multifunctional Flexible Humidity Sensor Systems Towards Noncontact Wearable Electronics. NANO-MICRO LETTERS 2022; 14:150. [PMID: 35869398 PMCID: PMC9307709 DOI: 10.1007/s40820-022-00895-5] [Citation(s) in RCA: 48] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 06/02/2022] [Indexed: 05/14/2023]
Abstract
In the past decade, the global industry and research attentions on intelligent skin-like electronics have boosted their applications in diverse fields including human healthcare, Internet of Things, human-machine interfaces, artificial intelligence and soft robotics. Among them, flexible humidity sensors play a vital role in noncontact measurements relying on the unique property of rapid response to humidity change. This work presents an overview of recent advances in flexible humidity sensors using various active functional materials for contactless monitoring. Four categories of humidity sensors are highlighted based on resistive, capacitive, impedance-type and voltage-type working mechanisms. Furthermore, typical strategies including chemical doping, structural design and Joule heating are introduced to enhance the performance of humidity sensors. Drawing on the noncontact perception capability, human/plant healthcare management, human-machine interactions as well as integrated humidity sensor-based feedback systems are presented. The burgeoning innovations in this research field will benefit human society, especially during the COVID-19 epidemic, where cross-infection should be averted and contactless sensation is highly desired.
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Affiliation(s)
- Yuyao Lu
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, People's Republic of China
| | - Geng Yang
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, People's Republic of China.
| | - Yajing Shen
- Department of Biomedical Engineering, City University of Hong Kong, Hong Kong, People's Republic of China
| | - Huayong Yang
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, People's Republic of China
| | - Kaichen Xu
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, 310027, People's Republic of China.
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16
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Screen-Printable Silver Paste Material for Semitransparent and Flexible Metal-Semiconductor-Metal Photodetectors with Liquid-Phase Procedure. NANOMATERIALS 2022; 12:nano12142428. [PMID: 35889654 PMCID: PMC9324574 DOI: 10.3390/nano12142428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 07/06/2022] [Accepted: 07/13/2022] [Indexed: 12/10/2022]
Abstract
Photodetectors are widely applied in modern industrial fields because they convert light energy into electrical signals. We propose a printable silver (Ag) paste electrode for a highly flexible metal–semiconductor–metal (MSM) broadband visible light photodetector as a wearable and portable device. Single-crystal and surface-textured silicon substrates with thicknesses of 37.21 μm were fabricated using a wet etching process. Surface texturization on flexible Si substrates enhances the light-trapping effect and minimizes reflectance from the incident light, and the average reflectance is reduced by 16.3% with pyramid-like structures. In this study, semitransparent, conductive Ag paste electrodes were manufactured using a screen-printing with liquid-phase process to form a flexible MSM broadband visible light photodetector. The transmittance of the homemade Ag paste solution fell between 34.83% and 36.98% in the wavelength range of visible light, from 400 nm to 800 nm. The highest visible light photosensitivity was 1.75 × 104 at 19.5 W/m2. The photocurrents of the flexible MSM broadband visible light photodetector were slightly changed under concave and convex conditions, displaying stable and durable bending properties.
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17
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Xiong J, Dan Z, Li H, Li S, Sun Y, Gao W, Huo N, Li J. Multifunctional GeAs/WS 2 Heterojunctions for Highly Polarization-Sensitive Photodetectors in the Short-Wave Infrared Range. ACS APPLIED MATERIALS & INTERFACES 2022; 14:22607-22614. [PMID: 35514056 DOI: 10.1021/acsami.2c03246] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Polarization-sensitive photodetectors in the infrared range have attracted considerable attention because of their unique and wide application prospects in polarization sensors and remote sensing. However, it is challenging to achieve short-wave infrared polarization detection as most polarization-sensitive photodetectors are based on transition-metal dichalcogenide (TMD) materials with in-plane symmetric crystal structure and sizable band gap (1-2 eV). In this work, we design a type-II GeAs/WS2 heterojunction realizing superior self-driven polarization-sensitive photodetection in the short-wave infrared region. The device shows obvious rectifying behavior with a rectification ratio of 1.5 × 104 in the dark and excellent photoresponse characteristics in a broad spectral range. Accordingly, the high responsivity of 509 mA/W, large on/off ratio of 103, a high EQE of 99.8%, and a high specific detectivity of 1.08 × 1012 Jones are obtained under 635 nm laser irradiation. Taking advantage of the narrow band gap of GeAs with an anisotropic structure, the detection spectral coverage can be extended from the visible to the short-wave infrared range (635-1550 nm). Further, the GeAs/WS2 heterojunction shows high polarization sensitivity with an anisotropic photocurrent ratio of 4.5 and 3.1 at zero bias under 1310 and 1550 nm laser irradiation, respectively, which is much higher than that of reported polarization-sensitive photodetectors in the infrared region. This work provides an effective route using low-symmetry 2D materials with narrow band gap and anisotropic structure to design van der Waals (vdW) heterojunctions, realizing multifunctional optoelectronics for rectifying, photovoltaics, and polarization-sensitive photodetectors with spectral coverage up to 1550 nm.
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Affiliation(s)
- Jingxian Xiong
- Institute of Semiconductors, South China Normal University, Guangzhou 510631, P.R. China
- Guangdong Provincial Key Laboratory of Chip and Integration Technology, Guangzhou 510631, P.R. China
| | - Zhiying Dan
- Institute of Semiconductors, South China Normal University, Guangzhou 510631, P.R. China
- Guangdong Provincial Key Laboratory of Chip and Integration Technology, Guangzhou 510631, P.R. China
| | - Hengyi Li
- Institute of Semiconductors, South China Normal University, Guangzhou 510631, P.R. China
- Guangdong Provincial Key Laboratory of Chip and Integration Technology, Guangzhou 510631, P.R. China
| | - Sina Li
- Institute of Semiconductors, South China Normal University, Guangzhou 510631, P.R. China
- Guangdong Provincial Key Laboratory of Chip and Integration Technology, Guangzhou 510631, P.R. China
| | - Yiming Sun
- Institute of Semiconductors, South China Normal University, Guangzhou 510631, P.R. China
- Guangdong Provincial Key Laboratory of Chip and Integration Technology, Guangzhou 510631, P.R. China
| | - Wei Gao
- Institute of Semiconductors, South China Normal University, Guangzhou 510631, P.R. China
- Guangdong Provincial Key Laboratory of Chip and Integration Technology, Guangzhou 510631, P.R. China
| | - Nengjie Huo
- Institute of Semiconductors, South China Normal University, Guangzhou 510631, P.R. China
- Guangdong Provincial Key Laboratory of Chip and Integration Technology, Guangzhou 510631, P.R. China
| | - Jingbo Li
- Institute of Semiconductors, South China Normal University, Guangzhou 510631, P.R. China
- Guangdong Provincial Key Laboratory of Chip and Integration Technology, Guangzhou 510631, P.R. China
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18
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Dai C, Liu Y, Wei D. Two-Dimensional Field-Effect Transistor Sensors: The Road toward Commercialization. Chem Rev 2022; 122:10319-10392. [PMID: 35412802 DOI: 10.1021/acs.chemrev.1c00924] [Citation(s) in RCA: 64] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The evolutionary success in information technology has been sustained by the rapid growth of sensor technology. Recently, advances in sensor technology have promoted the ambitious requirement to build intelligent systems that can be controlled by external stimuli along with independent operation, adaptivity, and low energy expenditure. Among various sensing techniques, field-effect transistors (FETs) with channels made of two-dimensional (2D) materials attract increasing attention for advantages such as label-free detection, fast response, easy operation, and capability of integration. With atomic thickness, 2D materials restrict the carrier flow within the material surface and expose it directly to the external environment, leading to efficient signal acquisition and conversion. This review summarizes the latest advances of 2D-materials-based FET (2D FET) sensors in a comprehensive manner that contains the material, operating principles, fabrication technologies, proof-of-concept applications, and prototypes. First, a brief description of the background and fundamentals is provided. The subsequent contents summarize physical, chemical, and biological 2D FET sensors and their applications. Then, we highlight the challenges of their commercialization and discuss corresponding solution techniques. The following section presents a systematic survey of recent progress in developing commercial prototypes. Lastly, we summarize the long-standing efforts and prospective future development of 2D FET-based sensing systems toward commercialization.
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Affiliation(s)
- Changhao Dai
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China.,Laboratory of Molecular Materials and Devices, Fudan University, Shanghai 200433, China
| | - Yunqi Liu
- Laboratory of Molecular Materials and Devices, Fudan University, Shanghai 200433, China
| | - Dacheng Wei
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China.,Laboratory of Molecular Materials and Devices, Fudan University, Shanghai 200433, China
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19
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Brune V, Hegemann C, Wilhelm M, Ates N, Mathur S. Molecular Precursors to Group IV Dichalcogenides MS2 (M = Ti, Zr, Hf). Z Anorg Allg Chem 2022. [DOI: 10.1002/zaac.202200049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Veronika Brune
- University of Cologne: Universitat zu Koln Chemie Greinstraße 6 50939 Cologne GERMANY
| | | | | | | | - Sanjay Mathur
- Institut für Anorganische Chemie Universität zu Köln Anorganische Chemie Greinstr. 6 50939 Köln GERMANY
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20
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Kushwaha P, Chauhan P. Facile green synthesis of CoFe 2O 4 nanoparticles using hibiscus extract and their application in humidity sensing properties. INORG NANO-MET CHEM 2021. [DOI: 10.1080/24701556.2021.1992432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
| | - Pratima Chauhan
- Department of Physics, University of Allahabad, Prayagraj, India
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21
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Shi J, Quan W, Chen X, Chen X, Zhang Y, Lv W, Yang J, Zeng M, Wei H, Hu N, Su Y, Zhou Z, Yang Z. Noble metal (Ag, Au, Pd and Pt) doped TaS 2 monolayer for gas sensing: a first-principles investigation. Phys Chem Chem Phys 2021; 23:18359-18368. [PMID: 34612377 DOI: 10.1039/d1cp02011k] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two-dimensional (2D) layered nanomaterials have attracted increasing attention in gas sensing due to their graphene-like properties. Although the gas sensing performances of 2D layered semiconductor transition metal dichalcogenides (TMDs), including MoS2, WS2, MoSe2 and WSe2, have been extensively studied, it has remained a grand challenge to develop a high-performance gas sensing material that can meet practical applications. Tantalum disulfide (TaS2), as a metallic TMD with low resistance and high current signal, has great promise in high-performance gas sensing. In stark contrast with Mo and W, Ta has a stronger positive charge, which contributes to a higher surface energy to capture gas molecules. Herein, through calculating the adsorption energy, charge transfer, electronic structure, and work function of the adsorption system with first-principles calculations, we first systematically studied the performance of noble metal atom substitution doping on a TaS2 monolayer for toxic nitrogen-containing gas (NH3, NO and NO2) sensing. We found that the TaS2 monolayer exhibits excellent NO sensing performance with an adsorption energy of 0.49 eV and a charge transfer of 0.17 e. However, it has a considerable adsorption energy (-0.22 and -0.39 eV) to NH3 and NO2 molecules, but a low charge transfer (-0.03 and 0.04 e) between the gas molecules and the TaS2 monolayer. To further enhance the gas-sensing performance of the TaS2 monolayer, noble metal atoms (Ag, Au, Pd and Pt) were substitutionally doped into the lattice of the TaS2 monolayer. The results showed that the values of adsorption energy and charge transfer can be significantly improved, and the electronic structure and work function of the doping system has also greatly changed, which makes it much easier to detect the changes in electrical signal due to gas adsorption. Our work indicates that the intrinsic as well as the noble metal doped TaS2 monolayers are promising candidates for high-performance gas sensors.
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Affiliation(s)
- Jia Shi
- Key Laboratory of Thin Film and Microfabrication (Ministry of Education), Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Institute of Marine Equipment, Shanghai Jiao Tong University, Shanghai 200240, P. R. China.
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22
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Fluorescent lamp tungsten filament thermionic emission gun as a novel humidity optical sensor. Sci Rep 2021; 11:18103. [PMID: 34518600 PMCID: PMC8438020 DOI: 10.1038/s41598-021-97688-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 08/30/2021] [Indexed: 11/12/2022] Open
Abstract
Detecting humidity have been remained a continuing concern within some important areas such as structural health, food processing, industrial as well as agricultural products. In this study, a novel humidity optical sensor is introduced based on the thermionic emission of tungsten filament using the fluorescent lamp set-up. Estimated blue compliant using a charged coupling device camera in optical image of the tungsten filament was confirmed as an appropriate detection system for relative humidity (RH) sensing. The fabricated optical sensor has wide linear range (2.0–98% RH), improved detection limit (< 5.0% RH), acceptable saturated limit (> 99.0% RH), improved percentage of relative standard deviation (4.18%, n = 2), adequate hysteresis (< 4.0% RH) and a shorter rise time (< 5.0 s), respectively. The mechanism behind this detection system is based on the interaction between H2O and tungsten filament during formation of W\documentclass[12pt]{minimal}
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\begin{document}$${\mathrm{H}}_{2}$$\end{document}H2O (x = 1–2) in terms of some spectroscopic obtained evidences as well as Fourier transform infrared and X-ray diffraction spectrometries.
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23
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Nag S, Singh R, Kumar R. Exceptionally high open circuit thermoelectric figure of merit in two-dimensional tin sulphide. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33:315705. [PMID: 34038887 DOI: 10.1088/1361-648x/ac0572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 05/26/2021] [Indexed: 06/12/2023]
Abstract
Thermoelectric materials with high values of power factor and thermoelectric figure of merit (ZT) are in great demand to make efficient thermoelectric devices. In this work, we explore the thermoelectric transport properties of layered tin sulphide (SnS) using first-principles method combined with Boltzmann transport theory. Our calculations show that the two-dimensional (2D) SnS materials have exceptionally high charge carrier mobilities and low lattice thermal conductivities as compared to other 2D materials such as graphene, phosphorene, MoS2, etc. Consequently, these 2D SnS materials have high power factor andZTvalues.
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Affiliation(s)
- Shagun Nag
- Department of Physics, Panjab University, Chandigarh 160014, India
| | - Ranber Singh
- Department of Physics, Sri Guru Gobind Singh College, Sector 26, Chandigarh 160019, India
| | - Ranjan Kumar
- Physics Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah 21589, Saudi Arabia and Department of Physics, Panjab University, Chandigarh 160014, India
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24
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She Y, Wu Z, You S, Du Q, Chu X, Niu L, Ding C, Zhang K, Zhang L, Huang S. Multiple-Dimensionally Controllable Nucleation Sites of Two-Dimensional WS 2/Bi 2Se 3 Heterojunctions Based on Vapor Growth. ACS APPLIED MATERIALS & INTERFACES 2021; 13:15518-15524. [PMID: 33769777 DOI: 10.1021/acsami.1c00377] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Two-dimensional (2D) heterojunctions have attracted great attention due to their excellent optoelectronic properties. Until now, precisely controlling the nucleation density and stacking area of 2D heterojunctions has been of critical importance but still a huge challenge. It hampers the progress of controlled growth of 2D heterojunctions for optoelectronic devices because the potential relation between numerous growth parameters and nucleation density is always poorly understood. Herein, by cooperatively controlling three parameters (substrate temperature, gas flow rate, and precursor concentration) in modified vapor deposition growth, the nucleation density and stacking area of WS2/Bi2Se3 vertical heterojunctions were successfully modulated. High-quality WS2/Bi2Se3 vertical heterojunctions with various stacking areas were effectively grown from single and multiple nucleation sites. Moreover, the potential nucleation mechanism and efficient charge transfer of WS2/Bi2Se3 vertical heterojunctions were systematically studied by utilizing the density functional theory and photoluminescence spectra. This modified vapor deposition strategy and the proposed mechanism are helpful in controlling the nucleation density and stacking area of other heterojunctions, which plays a key role in the preparation of electronic and optoelectronic nanodevices.
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Affiliation(s)
- Yihong She
- School of Science, Key Laboratory of High Performance Scientific Computation, Xihua University, Chengdu 610039, China
| | - Zhen Wu
- School of Science, Key Laboratory of High Performance Scientific Computation, Xihua University, Chengdu 610039, China
| | - Shengdong You
- School of Science, Key Laboratory of High Performance Scientific Computation, Xihua University, Chengdu 610039, China
| | - Quan Du
- School of Science, Key Laboratory of High Performance Scientific Computation, Xihua University, Chengdu 610039, China
| | - Xiaohong Chu
- School of Science, Key Laboratory of High Performance Scientific Computation, Xihua University, Chengdu 610039, China
| | - Lijuan Niu
- Key Laboratory of Carbon Materials of Zhejiang Province, Institute of New Materials and Industrial Technologies, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Changchun Ding
- School of Science, Key Laboratory of High Performance Scientific Computation, Xihua University, Chengdu 610039, China
| | - Kenan Zhang
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
- State Key Laboratory of Infrared Physics, Chinese Academy of Sciences, Shanghai 200083, China
| | - Lijie Zhang
- Key Laboratory of Carbon Materials of Zhejiang Province, Institute of New Materials and Industrial Technologies, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Shaoming Huang
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China
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25
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Lu Y, Xu K, Yang MQ, Tang SY, Yang TY, Fujita Y, Honda S, Arie T, Akita S, Chueh YL, Takei K. Highly stable Pd/HNb 3O 8-based flexible humidity sensor for perdurable wireless wearable applications. NANOSCALE HORIZONS 2021; 6:260-270. [PMID: 33470262 DOI: 10.1039/d0nh00594k] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Real-time, daily health monitoring can provide large amounts of patient data, which may greatly improve the likelihood of diagnosing health conditions at an early stage. One potential sensor is a flexible humidity sensor to monitor moisture and humidity information such as dehydration. However, achieving a durable functional nanomaterial-based flexible humidity sensor remains a challenge due to partial desorption of water molecules during the recovery process, especially at high humidities. In this work, we demonstrate a highly stable resistive-type Pd/HNb3O8 humidity sensor, which exhibits a perdurable performance for over 100 h of cycle tests under a 90% relative humidity (RH) without significant performance degradation. One notable advantage of the Pd/HNb3O8 humidity sensor is its ability to regulate hydroniums due to the strong reducibility of H atoms dissociated on the Pd surface. This feature realizes a high stability even at a high humidity (99.9% RH). Using this superior performance, the Pd/HNb3O8 humidity sensor realizes wireless monitoring of the changes in the fingertip humidity of an adult under different physiological states, demonstrating a facile and reliable path for dehydration diagnosis.
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Affiliation(s)
- Yuyao Lu
- Department of Physics and Electronics, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan.
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26
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Nguyen DT, Ting HA, Su YH, Hofmann M, Hsieh YP. Additive-Enhanced Exfoliation for High-Yield 2D Materials Production. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:601. [PMID: 33670883 PMCID: PMC7997357 DOI: 10.3390/nano11030601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 02/23/2021] [Accepted: 02/25/2021] [Indexed: 11/17/2022]
Abstract
The success of van-der-Waals electronics, which combine large-scale-deposition capabilities with high device performance, relies on the efficient production of suitable 2D materials. Shear exfoliation of 2D materials' flakes from bulk sources can generate 2D materials with low amounts of defects, but the production yield has been limited below industry requirements. Here, we introduce additive-assisted exfoliation (AAE) as an approach to significantly increase the efficiency of shear exfoliation and produce an exfoliation yield of 30%. By introducing micrometer-sized particles that do not exfoliate, the gap between rotor and stator was dynamically reduced to increase the achievable shear rate. This enhancement was applied to WS2 and MoS2 production, which represent two of the most promising 2D transition-metal dichalcogenides. Spectroscopic characterization and cascade centrifugation reveal a consistent and significant increase in 2D material concentrations across all thickness ranges. Thus, the produced WS2 films exhibit high thickness uniformity in the nanometer-scale and can open up new routes for 2D materials production towards future applications.
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Affiliation(s)
- Dinh-Tuan Nguyen
- Department of Materials Science and Engineering, National Cheng Kung University, Tainan 70101, Taiwan; (D.-T.N.); (Y.-H.S.)
| | - Hsiang-An Ting
- Department of Mechanical Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan;
| | - Yen-Hsun Su
- Department of Materials Science and Engineering, National Cheng Kung University, Tainan 70101, Taiwan; (D.-T.N.); (Y.-H.S.)
| | - Mario Hofmann
- Department of Physics, National Taiwan University, Taipei 10617, Taiwan
| | - Ya-Ping Hsieh
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan
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27
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Li P, Yu S, Zhang H. Preparation and Performance Analysis of Ag/ZnO Humidity Sensor. SENSORS 2021; 21:s21030857. [PMID: 33525343 PMCID: PMC7865809 DOI: 10.3390/s21030857] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 12/17/2020] [Accepted: 12/25/2020] [Indexed: 11/16/2022]
Abstract
Highly sensitive silver (Ag) modified zinc oxide (ZnO) humidity sensors were prepared by hydrothermal synthesis and the mechanism was studied. Experimental results show that Ag-modified ZnO can effectively enhance the performance of a humidity sensor. Large number of oxygen vacancies and many active sites are generated on the surface when molar ratio of Ag+ to Zn2+ is 1:100, which can accelerate the decomposition of water molecules on surface of the material, thereby improving the response of humidity sensor. Moreover, the linearity of ZnO humidity sensor is greatly improved by silver nanoparticles. Compared with previously reported ZnO-based humidity sensors, Ag/ZnO humidity sensors have a better response (151,700%), good linearity, low hysteresis (3%), and short response/recovery time (36/6 s). At the same time, it is found that the light had little effect on the performance of Ag/ZnO. Therefore, this kind of ZnO sensor with stable performance and excellent performance is expected to be used in the detection of relative humidity in conventional environments.
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Seok H, Megra YT, Kanade CK, Cho J, Kanade VK, Kim M, Lee I, Yoo PJ, Kim HU, Suk JW, Kim T. Low-Temperature Synthesis of Wafer-Scale MoS 2-WS 2 Vertical Heterostructures by Single-Step Penetrative Plasma Sulfurization. ACS NANO 2021; 15:707-718. [PMID: 33411506 DOI: 10.1021/acsnano.0c06989] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Two-dimensional (2D) transition metal dichalcogenides (TMDs) have attracted considerable attention owing to their synergetic effects with other 2D materials, such as graphene and hexagonal boron nitride, in TMD-based heterostructures. Therefore, it is important to understand the physical properties of TMD-TMD vertical heterostructures for their applications in next-generation electronic devices. However, the conventional synthesis process of TMD-TMD heterostructures has some critical limitations, such as nonreproducibility and low yield. In this paper, we synthesize wafer-scale MoS2-WS2 vertical heterostructures (MWVHs) using plasma-enhanced chemical vapor deposition (PE-CVD) via penetrative single-step sulfurization discovered by time-dependent analysis. This method is available for fabricating uniform large-area vertical heterostructures (4 in.) at a low temperature (300 °C). MWVHs were characterized using various spectroscopic and microscopic techniques, which revealed their uniform nanoscale polycrystallinity and the presence of vertical layers of MoS2 and WS2. In addition, wafer-scale MWVHs diodes were fabricated and demonstrated uniform performance by current mapping. Furthermore, mode I fracture tests were performed using large double cantilever beam specimens to confirm the separation of the MWVHs from the SiO2/Si substrate. Therefore, this study proposes a synthesis mechanism for TMD-TMD heterostructures and provides a fundamental understanding of the interfacial properties of TMD-TMD vertical heterostructures.
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Affiliation(s)
- Hyunho Seok
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Yonas Tsegaye Megra
- School of Mechanical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Chaitanya K Kanade
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jinill Cho
- School of Mechanical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Vinit K Kanade
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Minjun Kim
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Inkoo Lee
- School of Mechanical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Pil J Yoo
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Republic of Korea
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Hyeong-U Kim
- Plasma Engineering Laboratory, Korea Institute of Machinery and Materials, Daejeon 34103, Republic of Korea
| | - Ji Won Suk
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Republic of Korea
- School of Mechanical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
- Department of Smart Fabrication Technology, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Taesung Kim
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, Republic of Korea
- School of Mechanical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
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Porous metal-graphene oxide nanocomposite sensors with high ammonia detectability. J Colloid Interface Sci 2020; 589:401-410. [PMID: 33482537 DOI: 10.1016/j.jcis.2020.12.096] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 12/21/2020] [Accepted: 12/24/2020] [Indexed: 11/22/2022]
Abstract
Nickel oxide-graphene oxide (NiO-GO), zinc oxide-graphene oxide (ZnO-GO) and bismuth oxide-graphene oxide (Bi2O3-GO) metal oxide-graphene oxide nanocomposite (MO-GO NC) sensors, operable at room temperature, were synthesized via a simple and cost-effective microwave-assisted combustion method for chemiresistive gas sensor applications. From the measured structural, morphological, and elemental detection properties, the sensors are found capable of detecting various gases. The Bi2O3-GO NC sensor exhibited excellent response over NiO-GO (~20 at 50 ppm) and ZnO-GO NC (~60 at 50 ppm) sensors for detecting NH3. The response of the Bi2O3-GO NC sensor at 50 ppm NH3 in just 14 s operation duration was ~81.23, which is improved 25-fold and 13-fold compared to pristine GO sensors. Additionally, the as-developed Bi2O3-GO NC sensor demonstrates outstanding repeatability and recovery kinetics, attributed to porosity and the combined effects of MO and GO. The sensing mechanism of the Bi2O3-GO NC gas sensors is proposed herein. The superior sensing performance, including quick response and recovery of the Bi2O3-GO NC sensor is attributed to favorable charge transfer across the Bi2O3 and GO interface. The significance of relative humidity on sensing potential of the Bi2O3-GO NC sensor has also been studied and the sensor is confirmed to be unaffected by relative humidity.
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Moccia M, Antonacci A, Saviano M, Caratelli V, Arduini F, Scognamiglio V. Emerging technologies in the design of peptide nucleic acids (PNAs) based biosensors. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.116062] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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31
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Zhang D, Gao Q, Chen Y, Xia Y, Wang H, Wang H, Ni Y. Tunable Electronic Properties and Potential Applications of BSe/XS
2
(X=Mo, W) van der Waals Heterostructures. ADVANCED THEORY AND SIMULATIONS 2020. [DOI: 10.1002/adts.202000144] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Dingbo Zhang
- School of Physical Science and Technology, Key Laboratory of Advanced Technologies of Materials Southwest Jiaotong University Chengdu 610031 China
| | - Qiang Gao
- Institute of Semiconductors Chinese Academy of Science Beijing 100083 China
| | - Yuanzheng Chen
- School of Physical Science and Technology, Key Laboratory of Advanced Technologies of Materials Southwest Jiaotong University Chengdu 610031 China
| | - Yudong Xia
- School of Physical Science and Technology, Key Laboratory of Advanced Technologies of Materials Southwest Jiaotong University Chengdu 610031 China
| | - Hui Wang
- School of Physical Science and Technology, Key Laboratory of Advanced Technologies of Materials Southwest Jiaotong University Chengdu 610031 China
| | - Hongyan Wang
- School of Physical Science and Technology, Key Laboratory of Advanced Technologies of Materials Southwest Jiaotong University Chengdu 610031 China
| | - Yuxiang Ni
- School of Physical Science and Technology, Key Laboratory of Advanced Technologies of Materials Southwest Jiaotong University Chengdu 610031 China
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32
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Ma H, Fang H, Wu W, Zheng C, Wu L, Wang H. A highly transparent humidity sensor with fast response speed based on α-MoO 3 thin films. RSC Adv 2020; 10:25467-25474. [PMID: 35518604 PMCID: PMC9055238 DOI: 10.1039/d0ra03958f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 06/29/2020] [Indexed: 12/20/2022] Open
Abstract
Metal oxide based humidity sensors are important indicators in environmental monitoring. However, most of them are non-transparent and have a long response time, which cannot meet the application of real-time humidity sensing in transparent electronics. Here, we report a metal oxide humidity sensor based on chemically synthesized molybdenum oxide (α-MoO3) thin films. By a green reaction in an ice water bath, the stable precursor containing nanocrystalline colloids was obtained. Molybdenum oxide films with controllable morphology were fabricated through one-step spin coating. The α-MoO3 based humidity sensor exhibits extremely high transparency (85%) in the visible region and has short response and recovery times (0.97 and 12.11 s). In addition, it also shows high sensitivity, good logarithmic linearity and selectivity in a wide relative humidity range of 11% to 95%. The mechanism of humidity sensing was further studied by complex impedance spectroscopy. This novel metal oxide humidity sensor combined with high transparency and fast response speed is expected to broaden the application ranges of humidity sensors.
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Affiliation(s)
- Hailong Ma
- State Key Laboratory for Mechanical Behavior of Materials, School of Material Science and Engineering, Xi'an Jiaotong University Xi'an 710049 China
| | - Huajing Fang
- State Key Laboratory for Mechanical Behavior of Materials, School of Material Science and Engineering, Xi'an Jiaotong University Xi'an 710049 China
| | - Wenting Wu
- State Key Laboratory for Mechanical Behavior of Materials, School of Material Science and Engineering, Xi'an Jiaotong University Xi'an 710049 China
| | - Cheng Zheng
- School of Electronic and Information Engineering, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University Xi'an 710049 China
| | - Liangliang Wu
- School of Electronic and Information Engineering, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University Xi'an 710049 China
| | - Hong Wang
- Department of Materials Science and Engineering, Shenzhen Engineering Research Center for Novel Electronic Information Materials and Devices, Southern University of Science and Technology Shenzhen 518055 China
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33
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Han X, Xing J, Xu H, Huang Y, Li D, Lu J, Li P, Wu Y. Remarkable improved photoelectric performance of SnS 2 field-effect transistor with Au plasmonic nanostructures. NANOTECHNOLOGY 2020; 31:215201. [PMID: 32018240 DOI: 10.1088/1361-6528/ab72bf] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The development of photoelectric devices for high integration and miniaturization in the semiconductor industry can be pushed forward by the thriving research of two-dimensional layered metal dichalcogenides (2D-LMDs). SnS2 nanosheets have an evident photoresponse to both ultraviolet and partial visible light, but only with a fair photoelectric performance limited by their atomic-layer thickness. Here, we report a convenient and simple method to dramatically enhance the electrical and photoelectric performance of the SnS2 flake. By integrating SnS2 with Au plasmonic nanostructures, the photocurrent (I ph) increased by over 20 times. The corresponding responsivity (R), light gain (G), and detectivity (D*) have been improved by ∼2200%, 2200% and 600%, respectively. The responsivity and detectivity of the Au NPs-SnS2 field-effect transistor (FET) at 532 nm are 1125.9 A W-1 and 2.12 × 1011 Jones. Though atomically thin, the hybrid SnS2 photodetector, benefiting from local surface plasmonic resonance, achieves an excellent photoelectric performance that is not usually possible with a pristine SnS2-only device.
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Affiliation(s)
- Xu Han
- School of Science, China University of Geosciences, Beijing 100083, People's Republic of China. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
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34
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Printable Highly Stable and Superfast Humidity Sensor Based on Two Dimensional Molybdenum Diselenide. Sci Rep 2020; 10:5509. [PMID: 32218460 PMCID: PMC7099085 DOI: 10.1038/s41598-020-62397-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 03/12/2020] [Indexed: 11/08/2022] Open
Abstract
Transition metal dichalcogenides (TMDCs) are promising materials for sensing applications, due to their exceptional high performance in nano-electronics. Inherentely, the chemical and thermal responses of TMDCs are highly stable, hence, they pave way for real time sensor applications. This article proposes inceptively a stable and superfast humidity sensor using two-dimensional (2D) Molybdenum diselenide (MoSe2) through printed technlogies. The 2D MoSe2 ink is synthesized through wet grinding to achieve few-layered nano-flakes. Inter digital electrodes (IDEs) are fabricated via screen-printing on Polyethylene terephthalate (PET) substrate and thin film of MoSe2 nano-flakes is fabricated through spin coating. The impedance and capacitance response are recorded at 1 kHz between temperature levels ranging from 20-30 °C. The impedance and capacitance hysteresis results are recorded <1.98% and <2.36%, respectively, ensuring very good repeatability during humidification and dehumidification. The stability of impedance and capacitance response are recorded with maximum error rate of ~ 0.162% and ~ 0.183%, respectively. The proposed sensor shows fast impedance response time (Tres) of ~ 0.96 s, and recovery time (Trec) of ~ 1.03 s, which has Tres of ~ 1.87 s, and Trec of ~ 2.13 s for capacitance. It is aimed to develop a high performance and stable humidity sensor for various monitoring applications.
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35
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Lei Y, Wang S, Xing J, Xu H, Han J, Liu W. High-Performance UV–Vis Photodetectors Based on a Lead-Free Hybrid Perovskite Crystal (MV)[SbI3Cl2]. Inorg Chem 2020; 59:4349-4356. [DOI: 10.1021/acs.inorgchem.9b03277] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yunlin Lei
- College of Physics and Materials Science, Tianjin Normal University, Tianjin 300387, China
| | - Shouyu Wang
- College of Physics and Materials Science, Tianjin Normal University, Tianjin 300387, China
| | - Jie Xing
- School of Sciences, China University of Geosciences, Beijing 100083, China
| | - Hong Xu
- School of Sciences, China University of Geosciences, Beijing 100083, China
| | - Jing Han
- College of Physics and Materials Science, Tianjin Normal University, Tianjin 300387, China
| | - Weifang Liu
- Tianjin Key Laboratory of Low-Dimensional Materials, Physics and Preparing Technology, Faculty of Science, Tianjin University, Tianjin 300072, China
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36
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Understanding the excitation wavelength dependent spectral shift and large exciton binding energy of tungsten disulfide quantum dots and its interaction with single-walled carbon nanotubes. J Colloid Interface Sci 2020; 561:519-532. [DOI: 10.1016/j.jcis.2019.11.027] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 10/18/2019] [Accepted: 11/07/2019] [Indexed: 12/27/2022]
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37
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Guo J, Peng R, Du H, Shen Y, Li Y, Li J, Dong G. The Application of Nano-MoS 2 Quantum Dots as Liquid Lubricant Additive for Tribological Behavior Improvement. NANOMATERIALS 2020; 10:nano10020200. [PMID: 31979331 PMCID: PMC7074879 DOI: 10.3390/nano10020200] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 01/10/2020] [Accepted: 01/21/2020] [Indexed: 01/21/2023]
Abstract
Molybdenum disulfide quantum dots (MoS2 QDs) are a promising lubricant additive for enhanced engine efficiency. In this study, MoS2 QDs were used as lubricating oil additives for ball-on-disc contact and had adequate dispersity in paroline oil, due to their super small particle size (~3 nm). Tribological results indicate that the friction coefficient of paroline oil with 0.3 wt.% MoS2 QDs reached 0.061, much lower than that of pure paroline oil (0.169), which is due to the formation of a stable tribo-film formed by the MoS2, MoO3, FeS, and FeSO4 composite within the wear track. Synergistic lubrication effects of the tribo-film and ball-bearing effect cooperatively resulted in the lowest friction and wear.
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Affiliation(s)
- Junde Guo
- School of Mechatronic Engineering, Xi’an Technological University, Xi’an 710021, China; (R.P.); (Y.S.)
- Correspondence: (J.G.); (J.L.); (G.D.)
| | - Runling Peng
- School of Mechatronic Engineering, Xi’an Technological University, Xi’an 710021, China; (R.P.); (Y.S.)
| | - Hang Du
- School of Mechatronic Engineering, Xi’an Technological University, Xi’an 710021, China; (R.P.); (Y.S.)
| | - Yunbo Shen
- School of Mechatronic Engineering, Xi’an Technological University, Xi’an 710021, China; (R.P.); (Y.S.)
| | - Yue Li
- Institute of Machinery Manufacturing Technology, China Association of Employment Promotion, Mianyang 621900, China
| | - Jianhui Li
- School of Science, Xi’an Jiaotong University, Xi’an 710049, China
- Correspondence: (J.G.); (J.L.); (G.D.)
| | - Guangneng Dong
- Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi’an Jiaotong University, Xi’an 710049, China
- Correspondence: (J.G.); (J.L.); (G.D.)
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38
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He Q, Zhou J, Tang W, Hao Y, Sun L, Zhu C, Xu F, Chen J, Wu Y, Wu Z, Xu B, Liu G, Li X, Zhang C, Kang J. Deeply Exploring Anisotropic Evolution toward Large-Scale Growth of Monolayer ReS 2. ACS APPLIED MATERIALS & INTERFACES 2020; 12:2862-2870. [PMID: 31850729 DOI: 10.1021/acsami.9b18623] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Among large numbers of transition metal dichalcogenides (TMDCs), monolayer rhenium disulfide (ReS2) is of particular interest due to its unique structural anisotropy, which opens up unprecedented opportunities in dichroic atomical electronics. Understanding the domain structure and controlling the anisotropic evolution of ReS2 during the growth is considered critical for increasing the domain size toward a large-scale growth of monolayer ReS2. Herein, by employing angle-resolved Raman spectroscopy, we reveal that the hexagonal ReS2 domain is constructed by six well-defined subdomains with each b-axis parallel to the diagonal of the hexagon. By further combining the first-principles calculations and the transmission electron microscopy (TEM) characterization, a dislocation-involved anisotropic evolution is proposed to explain the formation of the domain structures and understand the limitation of the domain size. Based on these findings, growth rates of different crystal planes are well controlled to enlarge the domain size, and moreover, single-crystal domains with a triangle shape are obtained. With the improved domain size, large-scale uniform, strictly monolayer ReS2 films are grown further. Scalable field-effect transistor (FET) arrays are constructed, which show good electrical performances comparable or even superior to that of the single domains reported at room temperature. This work not only sheds light on comprehending the novel growth mechanism of ReS2 but also offers a robust and controllable strategy for the synthesis of large-area and high-quality two-dimensional materials with low structural symmetry.
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Affiliation(s)
| | | | | | - Yufeng Hao
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Collaborative Innovation Center of Advanced Microstructures, and Jiangsu Key Laboratory of Artificial Functional Materials , Nanjing University , Nanjing 210093 , P. R. China
- Haian Institute of New Technology , Nanjing University , Haian 226600 , P. R. China
- School of Physics and Microelectronics , Zhengzhou University , Zhengzhou , Henan 450001 , P. R. China
| | - Litao Sun
- SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of the Ministry of Education , Southeast University , Nanjing 210096 , P. R. China
| | - Chongyang Zhu
- SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of the Ministry of Education , Southeast University , Nanjing 210096 , P. R. China
| | - Feng Xu
- SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of the Ministry of Education , Southeast University , Nanjing 210096 , P. R. China
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Shinde PV, Shinde NM, Shaikh SF, Lee D, Yun JM, Woo LJ, Al-Enizi AM, Mane RS, Kim KH. Room-temperature synthesis and CO 2-gas sensitivity of bismuth oxide nanosensors. RSC Adv 2020; 10:17217-17227. [PMID: 35693914 PMCID: PMC9122568 DOI: 10.1039/d0ra00801j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 04/12/2020] [Indexed: 11/21/2022] Open
Abstract
Room-temperature (27 °C) synthesis and carbon dioxide (CO2)-gas-sensor applications of bismuth oxide (Bi2O3) nanosensors obtained via a direct and superfast chemical-bath-deposition method (CBD) with different surface areas and structures, i.e., crystallinities and morphologies including a woollen globe, nanosheet, rose-type, and spongy square plate on a glass substrate, are reported. Moprhologies of the Bi2O3 nanosensors are tuned through polyethylene glycol, ethylene glycol, and ammonium fluoride surfactants. The crystal structure, type of crystallinity, and surface appearance are determined from the X-ray diffraction patterns, X-ray photoelectron spectroscopy spectra, and high-resolution transmission electron microscopy images. The room-temperature gas-sensor applications of these Bi2O3 nanosensors for H2, H2S, NO2, SO2, and CO2 gases are monitored from 10 to 100 ppm concentrations, wherein Bi2O3 nanosensors of different physical properties demonstrate better performance and response/recovery time measurement for CO2 gas than those for the other target gases employed. Among various sensor morphologies, the nanosheet-type Bi2O3 sensor has exhibited at 100 ppm concentration of CO2 gas, a 179% response, 132 s response time, and 82 s recovery time at room-temperature, which is credited to its unique surface morphology, high surface area, and least charge transfer resistance. This suggests that the importance of the surface morphology, surface area, and crystallinity of the Bi2O3 nanosensors used for designing room-temperature operable CO2 gas sensors for commercial benefits. Room-temperature (27 °C) synthesis and carbon dioxide (CO2)-gas-sensing applications of bismuth oxide (Bi2O3) nanosensors obtained via a direct and superfast chemical-bath-deposition method (CBD) with different surface areas and structures.![]()
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Affiliation(s)
- Pritamkumar V. Shinde
- Global Frontier R&D Centre for Hybrid Interface Materials
- Pusan National University
- Busan 609-735
- Republic of Korea
| | - Nanasaheb M. Shinde
- National Core Research Centre
- Pusan National University
- Busan 609-735
- Republic of Korea
| | | | - Damin Lee
- School of Materials Science and Engineering
- Pusan National University
- Busan 609-735
- Republic of Korea
| | - Je Moon Yun
- National Core Research Centre
- Pusan National University
- Busan 609-735
- Republic of Korea
| | - Lee Jung Woo
- School of Materials Science and Engineering
- Pusan National University
- Busan 609-735
- Republic of Korea
| | - Abdullah M. Al-Enizi
- Department of Chemistry
- College of Science
- King Saud University
- Riyadh 11451
- Saudi Arabia
| | - Rajaram S. Mane
- Global Frontier R&D Centre for Hybrid Interface Materials
- Pusan National University
- Busan 609-735
- Republic of Korea
- School of Physical Sciences
| | - Kwang Ho Kim
- Global Frontier R&D Centre for Hybrid Interface Materials
- Pusan National University
- Busan 609-735
- Republic of Korea
- National Core Research Centre
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40
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Liu H, Zhu X, Sun X, Zhu C, Huang W, Zhang X, Zheng B, Zou Z, Luo Z, Wang X, Li D, Pan A. Self-Powered Broad-band Photodetectors Based on Vertically Stacked WSe 2/Bi 2Te 3 p-n Heterojunctions. ACS NANO 2019; 13:13573-13580. [PMID: 31697469 DOI: 10.1021/acsnano.9b07563] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Semiconducting p-n heterojunctions, serving as the basic unit of modern electronic devices, such as photodetectors, solar-energy conversion devices, and light-emitting diodes (LEDs), have been extensively investigated in recent years. In this work, high performance self-powered broad-band photodetectors were fabricated based on vertically stacked p-n heterojunctions though combining p-type WSe2 with n-type Bi2Te3 via van der Waals (vdW) epitaxial growth. Devices based on the p-n heterojunction show obvious current rectification behaviors in the dark and superior photovoltaic characteristics under light irradiation. A maximum short circuit current of 18 nA and open circuit voltage of 0.25 V can be achieved with the illumination light of 633 nm (power density: 26.4 mW/cm2), which are among the highest values compared with the ever reported 2D vdW heterojunctions synthesized by chemical vapor deposition (CVD) method. Benefiting from the broad-band absorption of the heterostructures, the detection range can be expanded from the visible to near-infrared (375-1550 nm). Moreover, ascribing to the efficient carriers separation process at the junction interfaces, the devices can be further employed as self-powered photodetectors, where a fast response time (∼210 μs) and high responsivity (20.5 A/W at 633 nm and 27 mA/W at 1550 nm) are obtained under zero bias voltage. The WSe2/Bi2Te3 p-n heterojunction-based self-powered photodetectors with high photoresponsivity, fast photoresponse time, and broad spectral response will find potential applications in high speed and self-sufficient broad-band devices.
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Affiliation(s)
- Huawei Liu
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering , Hunan University , Changsha , Hunan 410082 , China
- School of Physics and Electronics , Hunan University , Changsha , Hunan 410082 , China
| | - Xiaoli Zhu
- School of Physics and Electronics , Hunan University , Changsha , Hunan 410082 , China
| | - Xingxia Sun
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering , Hunan University , Changsha , Hunan 410082 , China
| | - Chenguang Zhu
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering , Hunan University , Changsha , Hunan 410082 , China
| | - Wei Huang
- School of Physics and Electronics , Hunan University , Changsha , Hunan 410082 , China
| | - Xuehong Zhang
- School of Physics and Electronics , Hunan University , Changsha , Hunan 410082 , China
| | - Biyuan Zheng
- School of Physics and Electronics , Hunan University , Changsha , Hunan 410082 , China
| | - Zixing Zou
- School of Physics and Electronics , Hunan University , Changsha , Hunan 410082 , China
| | - Ziyu Luo
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering , Hunan University , Changsha , Hunan 410082 , China
| | - Xiao Wang
- School of Physics and Electronics , Hunan University , Changsha , Hunan 410082 , China
| | - Dong Li
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering , Hunan University , Changsha , Hunan 410082 , China
| | - Anlian Pan
- Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Materials Science and Engineering , Hunan University , Changsha , Hunan 410082 , China
- School of Physics and Electronics , Hunan University , Changsha , Hunan 410082 , China
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41
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Esfandiari M, Mohajerzadeh S. Formation of large area WS 2 nanosheets using an oxygen-plasma assisted exfoliation suitable for optical devices. NANOTECHNOLOGY 2019; 30:425204. [PMID: 31300629 DOI: 10.1088/1361-6528/ab31b5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We report a facile method to realize large area two-dimensional tungsten disulfide nanosheets. The formation of such large WS2 sheets is feasible through sonication in water and dimethyl-sulfoxide (DMSO) solutions, leading to well-separated mono and few layer flakes. The exfoliation has been improved by extensive immersion in near-freezing water prior to probe sonication and subsequent addition of DMSO. By applying oxygen plasma before exfoliation, the size and distribution of sheets become more uniform and larger mono and double-layered structures with sizes of the order of 1 μm are achieved. Different analyses such as SEM, TEM, AFM, DLS and Raman spectroscopy have been employed to understand the mechanism of the exfoliation and study the effects of various parameters such as water temperature, duration and plasma power. The optical properties of WS2 sheets have been examined with a 532 nm laser illumination and demonstrate superior responsivity and detectivity of 0.59 A W-1 and 6.5 × 1010 cm Hz1/2 W-1, respectively.
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Affiliation(s)
- Mehrnaz Esfandiari
- Thin Film and Nanoelectronic Lab, School of Electrical and Computer Eng, College of Engineering, University of Tehran, Tehran, Iran
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42
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Kim S, Kim YC, Choi YJ, Woo HJ, Song YJ, Kang MS, Lee C, Cho JH. Vertically Stacked CVD-Grown 2D Heterostructure for Wafer-Scale Electronics. ACS APPLIED MATERIALS & INTERFACES 2019; 11:35444-35450. [PMID: 31456390 DOI: 10.1021/acsami.9b11206] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This paper demonstrates, for the first time, wafer-scale graphene/MoS2 heterostructures prepared by chemical vapor deposition (CVD) and their application in vertical transistors and logic gates. A CVD-grown bulk MoS2 layer is utilized as the vertical channel, whereas CVD-grown monolayer graphene is used as the tunable work-function electrode. The short vertical channel of the transistor is formed by sandwiching bulk MoS2 between the bottom indium tin oxide (ITO, drain electrode) and the top graphene (source electrode). The electron injection barriers at the graphene-MoS2 junction and ITO-MoS2 junction are modulated effectively through variation of the Schottky barrier height and its effective barrier width, respectively, because of the work-function tunability of the graphene electrode. The resulting vertical transistor with the CVD-grown MoS2/graphene heterostructure exhibits a current density exceeding 7 A/cm2, a subthreshold swing of 410 mV/dec, and an on-off current ratio exceeding 103. The large-area synthesis, transfer, and patterning processes of both semiconducting MoS2 and metallic graphene facilitate construction of a wafer-scale array of transistors and logic gates such as NOT, NAND, and NOR.
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Affiliation(s)
| | | | | | | | | | - Moon Sung Kang
- Department of Chemical and Biomolecular Engineering , Sogang University , Seoul 04107 , Korea
| | | | - Jeong Ho Cho
- Department of Chemical and Biomolecular Engineering , Yonsei University , Seoul 03722 , Korea
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43
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Huang F, Li J, Xu Z, Liu Y, Luo R, Zhang SW, Nie P, Lv Y, Zhao S, Su W, Li WD, Zhao S, Wei G, Kuo HC, Kang F. A Bilayer 2D-WS 2/Organic-Based Heterojunction for High-Performance Photodetectors. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1312. [PMID: 31540315 PMCID: PMC6781271 DOI: 10.3390/nano9091312] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 09/09/2019] [Accepted: 09/10/2019] [Indexed: 11/16/2022]
Abstract
Two-dimensional (2D) tungsten disulfide (WS2) has inspired great efforts in optoelectronics, such as in solar cells, light-emitting diodes, and photodetectors. However, chemical vapor deposition (CVD) grown 2D WS2 domains with the coexistence of a discontinuous single layer and multilayers are still not suitable for the fabrication of photodetectors on a large scale. An emerging field in the integration of organic materials with 2D materials offers the advantages of molecular diversity and flexibility to provide an exciting aspect on high-performance device applications. Herein, we fabricated a photodetector based on a 2D-WS2/organic semiconductor materials (mixture of the (Poly-(N, N'-bis-4-butylphenyl-N, N'-bisphenyl) benzidine and Phenyl-C61-butyric acid methyl ester (Poly-TPD/PCBM)) heterojunction. The application of Poly-TPD/PCBM organic blend film enhanced light absorption, electrically connected the isolated WS2 domains, and promoted the separation of electron-hole pairs. The generated exciton could sufficiently diffuse to the interface of the WS2 and the organic blend layers for efficient charge separation, where Poly-TPD was favorable for hole carrier transport and PCBM for electron transport to their respective electrodes. We show that the photodetector exhibited high responsivity, detectivity, and an on/off ratio of 0.1 A/W, 1.1 × 1011 Jones, and 100, respectively. In addition, the photodetector showed a broad spectral response from 500 nm to 750 nm, with a peak external quantum efficiency (EQE) of 8%. Our work offers a facile solution-coating process combined with a CVD technique to prepare an inorganic/organic heterojunction photodetector with high performance on silicon substrate.
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Affiliation(s)
- Feng Huang
- College of Materials & Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China.
| | - Jingzhou Li
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen 518055, China.
- Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518000, China.
| | - Zhuhua Xu
- College of Materials & Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China.
| | - Yuan Liu
- Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518000, China.
| | - Ripeng Luo
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen 518055, China.
- Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518000, China.
| | - Si-Wei Zhang
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen 518055, China.
- Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518000, China.
| | - Pengbo Nie
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen 518055, China.
- Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518000, China.
| | - Yanfei Lv
- College of Materials & Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China.
| | - Shixi Zhao
- Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518000, China.
| | - Weitao Su
- College of Materials & Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China.
| | - Wen-Di Li
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam, Hong Kong, China.
| | - Shichao Zhao
- College of Materials & Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China.
| | - Guodan Wei
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen 518055, China.
- Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518000, China.
| | - Hao-Chung Kuo
- Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan.
- Department of Electrical Engineering and Computer Sciences and Tsinghua-Berkeley Shenzhen Institute (TBSI), University of California at Berkeley, Berkeley, CA 94720, USA.
| | - Feiyu Kang
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen 518055, China.
- Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518000, China.
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44
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Xiao Y, Shen D, Zou G, Wu A, Liu L, Duley WW, Zhou YN. Self-powered, flexible and remote-controlled breath monitor based on TiO 2 nanowire networks. NANOTECHNOLOGY 2019; 30:325503. [PMID: 31013482 DOI: 10.1088/1361-6528/ab1b93] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Smart breath monitor devices with high stretchability, fast response/recovery times and self-powered characteristic are essential in the wearable medical and life science applications. In this work, we report on the development of a versatile high-performance humidity sensor based on TiO2 nanowire networks for self-powered sensing application of human breath monitoring. These sensors, with typical response times of ∼3.6 s and recovery times of ∼14 s, exhibit high sensitivity to water vapor and can yield an output voltage that is directly proportional to the humidity level of ambient environment. The structure of nanowire networks is highly flexible and maintains the output voltage even after 10 000 times bending. By combining this type of sensor with a commercial signal transmission and processing system, it shows the good basis for real-time/remote-controlled monitoring and analysis of human breath under a variety of respiratory conditions. Our results suggest a new class of humidity sensing for self-powered biomedical devices and open to new technologies in energy, electronics, and sensor applications.
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Affiliation(s)
- Yu Xiao
- Department of Mechanical Engineering, State Key Laboratory of Tribology, Key Laboratory for Advanced Manufacturing by Materials Processing Technology, Ministry of Education of PR China, Tsinghua University, Beijing 100084, People's Republic of China
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45
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Brune V, Hegemann C, Mathur S. Molecular Routes to Two-Dimensional Metal Dichalcogenides MX 2 (M = Mo, W; X = S, Se). Inorg Chem 2019; 58:9922-9934. [PMID: 31310512 DOI: 10.1021/acs.inorgchem.9b01084] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
New synthetic access to two-dimensional transition metal dichalcogenides (TMDCs) is highly desired to exploit their extraordinary semiconducting and optoelectronic properties for practical applications. We introduce here an entirely novel class of molecular precursors, [MIV(XEtN(Me)EtX)2] (MIV = MoIV, WIV, X = S, Se), enabling chemical vapor deposition of TMDC thin films. Molybdenum and tungsten complexes of dianionic tridentate pincer-type ligands (HXEt)2NR (R = methyl, tert-butyl, phenyl) produced air-stable monomeric dichalcogenide complexes, [W(SEtN(Me)EtS)2] and [Mo(SEtN(Me)EtS)2], displaying W and Mo centers in an octahedral environment of 4 S and 2 N donor atoms. Owing to their remarkable volatility and clean thermal decomposition, both Mo and W complexes, when used in the chemical vapor deposition (CVD) process, produced crystalline MoS2 and WS2 thin films. X-ray diffraction analysis and atomic-scale imaging confirmed the phase purity and 2D structural characteristics of MoS2 and WS2 films. The new set of ligands presented in this work open ups convenient access to a scalable and precursor-based synthesis of 2D transition metal dichalcogenides.
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Affiliation(s)
- Veronika Brune
- Institute of Inorganic Chemistry , University of Cologne , Greinstraße 6 , D-50939 Cologne , Germany
| | - Corinna Hegemann
- Institute of Inorganic Chemistry , University of Cologne , Greinstraße 6 , D-50939 Cologne , Germany
| | - Sanjay Mathur
- Institute of Inorganic Chemistry , University of Cologne , Greinstraße 6 , D-50939 Cologne , Germany
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46
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Arote SA, Pathan AS, Hase YV, Bardapurkar PP, Gapale DL, Palve BM. Investigations on synthesis, characterization and humidity sensing properties of ZnO and ZnO-ZrO 2 composite nanoparticles prepared by ultrasonic assisted wet chemical method. ULTRASONICS SONOCHEMISTRY 2019; 55:313-321. [PMID: 30686602 DOI: 10.1016/j.ultsonch.2019.01.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 01/04/2019] [Accepted: 01/12/2019] [Indexed: 05/04/2023]
Abstract
In the present investigations, Zinc oxide (ZnO) and ZnO-ZrO2 composite nanoparticles were synthesized by ultrasonic assisted wet chemical method to investigate their structural, optical and humidity sensing properties. The synthesized nanoparticles were characterized by the techniques like X ray diffraction (XRD), UV-Vis absorption spectroscopy, Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS). XRD and EDS were employed to confirm the phase formation and phase purity respectively. SEM micrographs showed that morphology of the parent compound ZnO is considerably changed with varying concentration of ZrO2. The optical absorption spectra showed that optical absorption of ZnO decreases with increase in ZrO2 content in the composite. The observed band gap values for ZnO and ZnO-ZrO2 composites were higher as compared to the bulk sample. The humidity sensing performance was substantiated for all the samples and the result of effect of concentration of ZrO2 in ZnO-ZrO2 composites on sensitivity, response and recovery time are discussed in detail.
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Affiliation(s)
- Sandeep A Arote
- Department of Physics, S.N. Arts, D.J.M. Commerce and B.N.S. Science College Sangamner, Dist- Ahmednagar, 422 605, India.
| | - Abbas S Pathan
- Department of Physics, S.N. Arts, D.J.M. Commerce and B.N.S. Science College Sangamner, Dist- Ahmednagar, 422 605, India
| | - Yogesh V Hase
- Department of Physics, S.N. Arts, D.J.M. Commerce and B.N.S. Science College Sangamner, Dist- Ahmednagar, 422 605, India
| | - Pranav P Bardapurkar
- Department of Physics, S.N. Arts, D.J.M. Commerce and B.N.S. Science College Sangamner, Dist- Ahmednagar, 422 605, India
| | - Deepak L Gapale
- Department of Physics, S.N. Arts, D.J.M. Commerce and B.N.S. Science College Sangamner, Dist- Ahmednagar, 422 605, India
| | - Balasaheb M Palve
- Department of Physics, S.N. Arts, D.J.M. Commerce and B.N.S. Science College Sangamner, Dist- Ahmednagar, 422 605, India
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47
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Li H, Huang Z, Lang Y, Wang X, Zhu H, Shen Z, Guan H, Hong J, Gui X, Qiu W, Lu H, Dong J, Zhu W, Yu J, Luo Y, Chen Z. Broadband all-light-control with WS 2 coated microfibers. OPTICS EXPRESS 2019; 27:12817-12831. [PMID: 31052817 DOI: 10.1364/oe.27.012817] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 04/11/2019] [Indexed: 06/09/2023]
Abstract
All-optical light amplitude tuning functionality is demonstrated in a layered tungsten disulfide (WS2) nanosheets coated microfiber (MF) structure. Due to the strong light-matter interactions between WS2 nanosheets and the evanescent field around the MF, a large variation in the transmitted power can be observed under both external and internal pump light excitations over a broadband spectrum (~100 nm). A power variation rate of ~0.3744 dB/mW is obtained under external violet pump light excitation, whereas the power variation rate of similar devices in the state of the art are usually less than 0.3 dB/mW. In terms of the response time, a moderate rise/fall time of ∼20.5/19.6 ms is achieved, which is mainly limited by the employed structure fabrication methods. These results indicate that the optical transmitted power of the WS2 coated MF can be modulated by different pump light with the power in the order of mW, thus the proposed device might have potential applications in all optical controllable devices and sensors, etc.
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48
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Afanas'ev VV, Chiappe D, Perucchini M, Houssa M, Huyghebaert C, Radu I, Stesmans A. Impact of MoS 2 layer transfer on electrostatics of MoS 2/SiO 2 interface. NANOTECHNOLOGY 2019; 30:055702. [PMID: 30511667 DOI: 10.1088/1361-6528/aaf03f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Using internal photoemission of electrons from few-monolayer thin MoS2 films into SiO2 we found that the MoS2 layer transfer processing perturbs electroneutrality of the interface, leading to an increase of the electron barrier height by ≈0.5-1 eV as compared to the case of the same films synthesized directly on SiO2. This effect is associated with the formation of an interface dipole, tentatively ascribed to interaction of H2O molecules with the SiO2 surface resulting in the incorporation of silanol (SiOH) groups. This violation of the interface electroneutrality may account for additional electron scattering in ultrathin transferred films and threshold voltage instabilities. Post-transfer annealing in H2S is shown to reduce the transfer-induced interface degradation.
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Affiliation(s)
- V V Afanas'ev
- Department of Physics and Astronomy, University of Leuven, B-3001 Leuven, Belgium
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49
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Afsar M, Rafiq MA, Jamil A, Fareed S, Siddique F, Tok AIY, Hasan MMU. Development of High-Performance Bismuth Sulfide Nanobelts Humidity Sensor and Effect of Humid Environment on its Transport Properties. ACS OMEGA 2019; 4:2030-2039. [PMID: 31459454 PMCID: PMC6648427 DOI: 10.1021/acsomega.8b01854] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 01/08/2019] [Indexed: 06/10/2023]
Abstract
Orthorhombic phase bismuth sulfide (Bi2S3) nanobelts were prepared via liquid-solid phase reaction method. Bi2S3 nanobelts were observed to be preferentially oriented along the (101) plane. Direct band gap (2.95 eV) and characteristic wavelength (λmax = 342 nm) were extracted through UV-visible spectroscopy. Specific surface area (9.8 m2/g) and pore size (2.5-120 nm) were evaluated through Brunauer-Emmett-Teller (BET) analysis. Relative humidity (RH) sensing properties were studied in the range of 11-97% RH at ambient conditions. The response of the sensor increases linearly with increase in RH. Fast response time (8-10 s) and recovery time (15 s) were observed. Reproducible and large response was also observed between 11 and 97% RH. Small hysteresis (<5%) and long-term stability during 30 days were confirmed. As a function of frequency, capacitance, alternating current conductivity, and electrical complex modulus in the frequency range of 20-2 MHz were studied at 11-97% RH. The sensing mechanism was also studied.
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Affiliation(s)
- Muhammad
Faheem Afsar
- Department of Physics and Applied
Mathematics and Department of Metallurgy and Materials
Engineering, Pakistan Institute of Engineering
and Applied Sciences, Nilore, Islamabad 45650, Pakistan
- School
of Materials Science and Engineering, Nanyang
Technological University, Singapore 639798, Singapore
| | - M. A. Rafiq
- Department of Physics and Applied
Mathematics and Department of Metallurgy and Materials
Engineering, Pakistan Institute of Engineering
and Applied Sciences, Nilore, Islamabad 45650, Pakistan
| | - Arifa Jamil
- Department of Physics and Applied
Mathematics and Department of Metallurgy and Materials
Engineering, Pakistan Institute of Engineering
and Applied Sciences, Nilore, Islamabad 45650, Pakistan
| | - Sajid Fareed
- Department of Physics and Applied
Mathematics and Department of Metallurgy and Materials
Engineering, Pakistan Institute of Engineering
and Applied Sciences, Nilore, Islamabad 45650, Pakistan
| | - Fizza Siddique
- Department of Physics and Applied
Mathematics and Department of Metallurgy and Materials
Engineering, Pakistan Institute of Engineering
and Applied Sciences, Nilore, Islamabad 45650, Pakistan
| | - A. I. Y. Tok
- School
of Materials Science and Engineering, Nanyang
Technological University, Singapore 639798, Singapore
| | - Muhammad Masood ul Hasan
- Department of Physics and Applied
Mathematics and Department of Metallurgy and Materials
Engineering, Pakistan Institute of Engineering
and Applied Sciences, Nilore, Islamabad 45650, Pakistan
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50
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Meng Z, Stolz RM, Mendecki L, Mirica KA. Electrically-Transduced Chemical Sensors Based on Two-Dimensional Nanomaterials. Chem Rev 2019; 119:478-598. [PMID: 30604969 DOI: 10.1021/acs.chemrev.8b00311] [Citation(s) in RCA: 256] [Impact Index Per Article: 51.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Electrically-transduced sensors, with their simplicity and compatibility with standard electronic technologies, produce signals that can be efficiently acquired, processed, stored, and analyzed. Two dimensional (2D) nanomaterials, including graphene, phosphorene (BP), transition metal dichalcogenides (TMDCs), and others, have proven to be attractive for the fabrication of high-performance electrically-transduced chemical sensors due to their remarkable electronic and physical properties originating from their 2D structure. This review highlights the advances in electrically-transduced chemical sensing that rely on 2D materials. The structural components of such sensors are described, and the underlying operating principles for different types of architectures are discussed. The structural features, electronic properties, and surface chemistry of 2D nanostructures that dictate their sensing performance are reviewed. Key advances in the application of 2D materials, from both a historical and analytical perspective, are summarized for four different groups of analytes: gases, volatile compounds, ions, and biomolecules. The sensing performance is discussed in the context of the molecular design, structure-property relationships, and device fabrication technology. The outlook of challenges and opportunities for 2D nanomaterials for the future development of electrically-transduced sensors is also presented.
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Affiliation(s)
- Zheng Meng
- Department of Chemistry, Burke Laboratory , Dartmouth College , Hanover , New Hampshire 03755 , United States
| | - Robert M Stolz
- Department of Chemistry, Burke Laboratory , Dartmouth College , Hanover , New Hampshire 03755 , United States
| | - Lukasz Mendecki
- Department of Chemistry, Burke Laboratory , Dartmouth College , Hanover , New Hampshire 03755 , United States
| | - Katherine A Mirica
- Department of Chemistry, Burke Laboratory , Dartmouth College , Hanover , New Hampshire 03755 , United States
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