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Chen X, Bagnall D, Nasiri N. Highly Porous ZnO/CNT Hybrid Microclusters for Superior UV Photodetection. ACS APPLIED MATERIALS & INTERFACES 2024; 16:27614-27626. [PMID: 38722974 DOI: 10.1021/acsami.4c02284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
The formation of nanoscale junctions among nanoparticles in self-assembled nanostructures is crucial for improving both interfacial conductivity and structural integrity. However, the inherent reliance on weak van der Waals forces to hold nanoparticles together poses challenges in developing commercially viable devices due to their inefficient carrier transport characteristics. This study presents the successful integration of carbon nanotubes (CNTs) into highly porous nanomicrocluster arrays of ZnO, resulting in the formation of cohesive and crack-free highly porous ZnO/CNT heterojunction films. This integration marks a significant improvement in UV photodetection performance, demonstrating a record-high photocurrent to dark current ratio of 3.3 × 106 and an exceptional responsivity of 18.5 A/W at a low bias of 0.5 V and under an ultra low light density of 25 μW/cm2. These findings underscore the efficacy of this high-performance structure as a versatile and scalable platform technology for the rapid, cost-effective fabrication of hybrid photodetectors in wearable and portable devices.
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Affiliation(s)
- Xiaohu Chen
- NanoTech Laboratory, School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney 2109, Australia
- Smart Green Cities Research Centre, Macquarie University, Sydney 2109, Australia
| | - Darren Bagnall
- Smart Green Cities Research Centre, Macquarie University, Sydney 2109, Australia
- School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney 2109, Australia
| | - Noushin Nasiri
- NanoTech Laboratory, School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney 2109, Australia
- Smart Green Cities Research Centre, Macquarie University, Sydney 2109, Australia
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2
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Bisht BP, Toutam V, Dhakate SR. 3D Printed Lattice Template by Material Extrusion Technique for Fabrication of Pixelated Photodetector. 3D PRINTING AND ADDITIVE MANUFACTURING 2023; 10:1394-1404. [PMID: 38116210 PMCID: PMC10726183 DOI: 10.1089/3dp.2022.0386] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Rigid and flexible, pixelated ultraviolet photodetectors (PD) based on ZnO have been fabricated by material extrusion 3D printing technique. The photoresponse is studied in an out-of-plane configuration. An open lattice structure is printed using PLA over ITO/Glass substrate for rigid, and TPU over ITO/PET substrate for flexible PDs. ZnO slurry is filled selectively into the columnar matrix by the microdispensing technique. The optical detector printed on ITO/Glass substrate shows a sensitivity of 25 and responsivity of 1.55 nA/mW with a rise and decay time of 1.6 and 0.6 s, respectively. Similarly, the flexible PD printed using TPU lattice shows a sensitivity of 9.5 and responsivity of 0.38 nA/mW with a rise and decay time of 1.8 and 0.6 s, respectively. The charge transport mechanism is studied using band diagram analysis. 3D printed open lattice structure is found to be a potential template for sensor fabrication. This work demonstrates the capability of material extrusion 3D printing with an open lattice structure for the fabrication of high-resolution pixelated PDs.
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Affiliation(s)
- Bhanu Prakash Bisht
- Academy of Scientific and Innovative Research (AcSIR), CSIR-National Physical Laboratory, New Delhi, India
- Advanced Materials and Device Metrology Division, CSIR-National Physical Laboratory, New Delhi, India
| | - Vijaykumar Toutam
- Academy of Scientific and Innovative Research (AcSIR), CSIR-National Physical Laboratory, New Delhi, India
- Advanced Materials and Device Metrology Division, CSIR-National Physical Laboratory, New Delhi, India
| | - Sanjay R. Dhakate
- Academy of Scientific and Innovative Research (AcSIR), CSIR-National Physical Laboratory, New Delhi, India
- Advanced Materials and Device Metrology Division, CSIR-National Physical Laboratory, New Delhi, India
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3
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Ma S, Dahiya AS, Dahiya R. Out-of-Plane Electronics on Flexible Substrates Using Inorganic Nanowires Grown on High-Aspect-Ratio Printed Gold Micropillars. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2210711. [PMID: 37178312 DOI: 10.1002/adma.202210711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 02/06/2023] [Indexed: 05/15/2023]
Abstract
Out-of-plane or 3D electronics on flexible substrates are an interesting direction that can enable novel solutions such as efficient bioelectricity generation and artificial retina. However, the development of devices with such architectures is limited by the lack of suitable fabrication techniques. Additive manufacturing (AM) can but often fail to provide high-resolution, sub-micrometer 3D architectures. Herein, the optimization of a drop-on-demand (DoD), high-resolution electrohydrodynamic (EHD)-based jet printing method for generating 3D gold (Au) micropillars is reported. Libraries of Au micropillar electrode arrays (MEAs) reaching a maximum height of 196 µm and a maximum aspect ratio of 52 are printed. Further, by combining AM with the hydrothermal growth method, a seedless synthesis of zinc oxide (ZnO) nanowires (NWs) on the printed Au MEAs is demonstrated. The developed hybrid approach leads to hierarchical light-sensitive NW-connected networks exhibiting favorable ultraviolet (UV) sensing as demonstrated via fabricating flexible photodetectors (PDs). The 3D PDs exhibit an excellent omnidirectional light-absorption ability and thus, maintain high photocurrents over wide light incidence angles (±90°). Lastly, the PDs are tested under both concave and convex bending at 40 mm, showing excellent mechanical flexibility.
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Affiliation(s)
- Sihang Ma
- James Watt School of Engineering, University of Glasgow, Glasgow, G12 8QQ, UK
| | | | - Ravinder Dahiya
- Bendable Electronics and Sustainable Technologies (BEST) Group, Electrical and Computer Engineering Department, Northeastern University, Boston, MA, 02115, USA
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4
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Hu J, Chen J, Ma T, Li Z, Hu J, Ma T, Li Z. Research advances in ZnO nanomaterials-based UV photode tectors: a review. NANOTECHNOLOGY 2023; 34:232002. [PMID: 36848670 DOI: 10.1088/1361-6528/acbf59] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 02/27/2023] [Indexed: 06/18/2023]
Abstract
Ultraviolet photodetectors (UV PDs) have always been the research focus of semiconductor optoelectronic devices due to their wide application fields and diverse compositions. As one of the best-known n-type metal oxides in third-generation semiconductor electronic devices, ZnO nanostructures and their assembly with other materials have received extensive research. In this paper, the research progress of different types of ZnO UV PDs is reviewed, and the effects of different nanostructures on ZnO UV PDs are summarized in detail. In addition, physical effects such as piezoelectric photoelectric effect, pyroelectric effect, and three ways of heterojunction, noble metal local surface plasmon resonance enhancement and formation of ternary metal oxides on the performance of ZnO UV PDs were also investigated. The applications of these PDs in UV sensing, wearable devices, and optical communication are displayed. Finally, the possible opportunities and challenges for the future development of ZnO UV PDs are prospected.
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Affiliation(s)
- Jinning Hu
- School of Science, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China
| | - Jun Chen
- Key Laboratory of Advanced Displaying Materials and Devices, Ministry of Industry and Information Technology, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China
| | - Teng Ma
- School of Science, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China
| | - Zhenhua Li
- School of Science, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China
| | - J Hu
- School of Science, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China
| | - T Ma
- School of Science, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China
| | - Z Li
- School of Science, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China
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5
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Gassoumi B, Dlala NA, Echabaane M, Karayel A, Özkınalı S, Castro M, Melendez F, Ghalla H, Nouar L, Madi F, Chaabane RB. Stability, spectroscopic, electrochemistry and QTAIM analysis of Cu-Zn n-1O n clusters for glucose sensing application: A study on theoretical and experimental insights. Heliyon 2022; 8:e12387. [PMID: 36582723 PMCID: PMC9793285 DOI: 10.1016/j.heliyon.2022.e12387] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/17/2022] [Accepted: 12/08/2022] [Indexed: 12/23/2022] Open
Abstract
Clusters of (ZnO)n (n = 2-4) have been shown to play a central role in the detection of glucose entity based on the existence of photo-induced electrons (PE), which facilitates the interaction between (ZnO)n clusters and glucose entity guests. The electrochemistry experiment has confirmed the detection of glucose by the title clusters. The optimization, energetic parameters, and vibrational frequency calculations have indicated that the Cu-Znn-1On-glucose are more stable than the (ZnO)n-glucose complexes. It has been demonstrated that the Cu doping enhanced the chemical behavior of the clusters and formed a high intramolecular charge transfer (ICT) in the system. The glucose sensing by all the forms of Cu-Znn-1On clusters showed that the Cu-Zn3O4, Cu-Wurtzite, and Cu-Rocksalt clusters are the most suitable for adsorbing the glucose guest. The HOMO/LUMO iso-surfaces of the complexes showed that the electron concentrations are localized in the d orbitals and mainly in the form of the d10 orbitals around Zn atoms. The molecular electrostatic potential (MEP) has clearly indicated that a high charge transfer occurs between the copper and the oxygen atoms, which facilitate the adsorption of glucose. The reactivity parameters also indicated that the Wurtzite-glucose complex has a high electrophilicity index (ω), which means a good acceptor behavior to interact with glucose. Additionally, the bond between the (ZnO)n clusters and the glucose polar element has been studied in detail by using QTAIM theory. Finally, the theoretical and experimental studies prove that the Cu-Znn-1On clusters are very suitable and competent compounds for detecting glucose.
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Affiliation(s)
- B. Gassoumi
- Laboratory of Advanced Materials and Interfaces (LIMA), University of Monastir, Faculty of Science of Monastir, Avenue of Environment, 5000 Monastir, Tunisia
- Corresponding author.
| | - N. Aouled Dlala
- Quantum and Statistical Physics Laboratory, Faculty of Sciences, University of Monastir, 5079 Monastir, Tunisia
| | - M. Echabaane
- Laboratory of Advanced Materials and Interfaces (LIMA), University of Monastir, Faculty of Science of Monastir, Avenue of Environment, 5000 Monastir, Tunisia
- NANOMISENE Lab, LR16CRMN01, Centre for Research on Microelectronics and Nanotechnology CRMN of Technopark of Sousse, B.P. 334, Sahloul, 4034 Sousse, Tunisia
| | - A. Karayel
- Department of Physics, Faculty of Arts and Sciences, Hitit University, Çorum, Turkey
- Corresponding author.
| | - S. Özkınalı
- Department of Chemistry, Faculty of Arts and Sciences, Hitit University, Çorum, Turkey
| | - M.E. Castro
- Centro de Química del Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, 18 sur y Av. San, Claudio, Col. San Manuel Puebla C. P. 72570, Mexico
| | - F.J. Melendez
- Lab. de Química Teórica, Centro de Investigación, Depto. de Fisicoquímica, Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Edif. FCQ10, 22 Sur y San Claudio, Ciudad Universitaria, Col. San Manuel, C.P 72570, Puebla, Mexico
| | - H. Ghalla
- Quantum and Statistical Physics Laboratory, Faculty of Sciences, University of Monastir, 5079 Monastir, Tunisia
| | - L. Nouar
- Laboratory of Computational Chemistry and Nanostructures, Department of Material Sciences, Faculty of Mathematical, Informatics and Material Sciences, University of 8 May 1945, Guelma, Algeria
| | - F. Madi
- Laboratory of Computational Chemistry and Nanostructures, Department of Material Sciences, Faculty of Mathematical, Informatics and Material Sciences, University of 8 May 1945, Guelma, Algeria
| | - R. Ben. Chaabane
- Laboratory of Advanced Materials and Interfaces (LIMA), University of Monastir, Faculty of Science of Monastir, Avenue of Environment, 5000 Monastir, Tunisia
- Corresponding author.
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6
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Toto E, Laurenzi S, Santonicola MG. Recent Trends in Graphene/Polymer Nanocomposites for Sensing Devices: Synthesis and Applications in Environmental and Human Health Monitoring. Polymers (Basel) 2022; 14:1030. [PMID: 35267853 PMCID: PMC8914833 DOI: 10.3390/polym14051030] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 02/28/2022] [Accepted: 03/03/2022] [Indexed: 02/04/2023] Open
Abstract
Graphene-based nanocomposites are largely explored for the development of sensing devices due to the excellent electrical and mechanical properties of graphene. These properties, in addition to its large specific surface area, make graphene attractive for a wide range of chemical functionalization and immobilization of (bio)molecules. Several techniques based on both top-down and bottom-up approaches are available for the fabrication of graphene fillers in pristine and functionalized forms. These fillers can be further modified to enhance their integration with polymeric matrices and substrates and to tailor the sensing efficiency of the overall nanocomposite material. In this review article, we summarize recent trends in the design and fabrication of graphene/polymer nanocomposites (GPNs) with sensing properties that can be successfully applied in environmental and human health monitoring. Functional GPNs with sensing ability towards gas molecules, humidity, and ultraviolet radiation can be generated using graphene nanosheets decorated with metallic or metal oxide nanoparticles. These nanocomposites were shown to be effective in the detection of ammonia, benzene/toluene gases, and water vapor in the environment. In addition, biological analytes with broad implications for human health, such as nucleic bases or viral genes, can also be detected using sensitive, graphene-based polymer nanocomposites. Here, the role of the biomolecules that are immobilized on the graphene nanomaterial as target for sensing is reviewed.
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Affiliation(s)
- Elisa Toto
- Department of Chemical Engineering Materials Environment, Sapienza University of Rome, Via del Castro Laurenziano 7, 00161 Rome, Italy;
| | - Susanna Laurenzi
- Department of Astronautical Electrical and Energy Engineering, Sapienza University of Rome, Via Salaria 851-881, 00138 Rome, Italy;
| | - Maria Gabriella Santonicola
- Department of Chemical Engineering Materials Environment, Sapienza University of Rome, Via del Castro Laurenziano 7, 00161 Rome, Italy;
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7
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Mballo A, Ahaitouf A, Sundaram S, Srivastava A, Ottapilakkal V, Gujrati R, Vuong P, Karrakchou S, Kumar M, Li X, Halfaya Y, Gautier S, Voss PL, Salvestrini JP, Ougazzaden A. Natural Boron and 10B-Enriched Hexagonal Boron Nitride for High-Sensitivity Self-Biased Metal-Semiconductor-Metal Neutron Detectors. ACS OMEGA 2022; 7:804-809. [PMID: 35036747 PMCID: PMC8757347 DOI: 10.1021/acsomega.1c05458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 12/14/2021] [Indexed: 06/14/2023]
Abstract
Metal-semiconductor-metal (MSM) detectors based on Ti/Au and Ni/Au interdigitated structures were fabricated using 2.5 micrometer thick hexagonal boron nitride (h-BN) layer with both natural and 10B-enriched boron. Current-voltage (I-V) and current-time (I-t) curves of the fabricated detectors were recorded with (I N) and without (I d) neutron irradiation, allowing the determination of their sensitivity (S = (I N - I d)/I d = ΔI/I d). Natural and 10B-enriched h-BN detectors exhibited high neutron sensitivities of 233 and 367% at 0 V bias under a flux of 3 × 104 n/cm2/s, respectively. An imbalance in the distribution of filled traps between the two electric contacts could explain the self-biased operation of the MSM detectors. Neutron sensitivity is further enhanced with electrical biasing, reaching 316 and 1192% at 200 V and a flux of 3 × 104 n/cm2/s for natural and 10B-enriched h-BN detectors, respectively, with dark current as low as 2.5 pA at 200 V. The increased performance under bias has been attributed to a gain mechanism based on neutron-induced charge carrier trapping at the semiconductor/metal interface. The response of the MSM detectors under thermal neutron flux and bias voltages was linear. These results clearly indicate that the thin-film monocrystal BN MSM neutron detectors can be optimized to operate sensitively with the absence of external bias and generate stronger signal detection using 10B-enriched boron.
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Affiliation(s)
- Adama Mballo
- CNRS,
IRL 2958, GT−CNRS, 2 rue Marconi, 57070 Metz, France
| | - Ali Ahaitouf
- CNRS,
IRL 2958, GT−CNRS, 2 rue Marconi, 57070 Metz, France
- Georgia
Tech-Lorraine, 2 rue Marconi, 57070 Metz, France
| | - Suresh Sundaram
- CNRS,
IRL 2958, GT−CNRS, 2 rue Marconi, 57070 Metz, France
- Georgia
Tech-Lorraine, 2 rue Marconi, 57070 Metz, France
| | - Ashutosh Srivastava
- CNRS,
IRL 2958, GT−CNRS, 2 rue Marconi, 57070 Metz, France
- School
of Electrical and Computer Engineering, GT-Lorraine, Georgia Institute of Technology, 57070 Metz, France
| | | | - Rajat Gujrati
- CNRS,
IRL 2958, GT−CNRS, 2 rue Marconi, 57070 Metz, France
- School
of Electrical and Computer Engineering, GT-Lorraine, Georgia Institute of Technology, 57070 Metz, France
| | - Phuong Vuong
- CNRS,
IRL 2958, GT−CNRS, 2 rue Marconi, 57070 Metz, France
| | | | - Mritunjay Kumar
- Advanced
Semiconductor Laboratory, King Abdullah
University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia
| | - Xiaohang Li
- Advanced
Semiconductor Laboratory, King Abdullah
University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia
| | | | - Simon Gautier
- Institut
Lafayette, 2 rue Marconi, 57070 Metz, France
| | - Paul L. Voss
- CNRS,
IRL 2958, GT−CNRS, 2 rue Marconi, 57070 Metz, France
- School
of Electrical and Computer Engineering, GT-Lorraine, Georgia Institute of Technology, 57070 Metz, France
| | - Jean Paul Salvestrini
- CNRS,
IRL 2958, GT−CNRS, 2 rue Marconi, 57070 Metz, France
- Georgia
Tech-Lorraine, 2 rue Marconi, 57070 Metz, France
- School
of Electrical and Computer Engineering, GT-Lorraine, Georgia Institute of Technology, 57070 Metz, France
| | - Abdallah Ougazzaden
- CNRS,
IRL 2958, GT−CNRS, 2 rue Marconi, 57070 Metz, France
- School
of Electrical and Computer Engineering, GT-Lorraine, Georgia Institute of Technology, 57070 Metz, France
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8
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Thomas AM, Yoon C, Ippili S, Jella V, Yang TY, Yoon G, Yoon SG. High-Performance Flexible Ultraviolet Photodetectors Based on Facilely Synthesized Ecofriendly ZnAl:LDH Nanosheets. ACS APPLIED MATERIALS & INTERFACES 2021; 13:61434-61446. [PMID: 34908392 DOI: 10.1021/acsami.1c19313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Recent studies have focused on the development of efficient, flexible, and highly sensitive ultraviolet photodetectors (UV PDs) with various wide band-gap materials. In the present study, the application of environmentally friendly zinc-aluminum layered double hydroxide (ZnAl-CO3:LDH) is demonstrated for a high-performance, flexible UV PD. The vertically oriented ZnAl:LDH nanosheets (ZnAl:LDH Ns) are facilely synthesized by dipping the sputtered 10 wt % aluminum-doped zinc oxide thin films in deionized water at room temperature. Without passivation, the UV PDs exhibit an exceptional light-to-dark current ratio of 104 and a responsivity of ∼34.7 mA/W at a bias of 1 V. Moreover, the spectral responsivity and detectivity are enhanced to ∼148.3 mA/W and 2.5 × 1012 Jones, respectively, by passivating the ZnAl:LDH Ns with polydimethylsiloxane (PDMS), thus making the device suitable for application in UV detectors. In addition, the ambient atmosphere effect on PD performance, which elucidates the clear understanding of the PD working mechanism, is also investigated. The passivation of the Ns by PDMS also helps to enhance the mechanical robustness and long-term stability of the PD. The methodology demonstrated herein highlights the potential of the ZnAl:LDH material in realizing the next generation of flexible UV PDs.
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Affiliation(s)
- Alphi Maria Thomas
- Department of Materials Science and Engineering, Chungnam National University, Daeduk Science Town, 34134 Daejeon, Republic of Korea
| | - Chongsei Yoon
- School of Electrical Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Swathi Ippili
- Department of Materials Science and Engineering, Chungnam National University, Daeduk Science Town, 34134 Daejeon, Republic of Korea
| | - Venkatraju Jella
- Department of Materials Science and Engineering, Chungnam National University, Daeduk Science Town, 34134 Daejeon, Republic of Korea
| | - Tae-Youl Yang
- Department of Materials Science and Engineering, Chungnam National University, Daeduk Science Town, 34134 Daejeon, Republic of Korea
| | - Giwan Yoon
- School of Electrical Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Soon-Gil Yoon
- Department of Materials Science and Engineering, Chungnam National University, Daeduk Science Town, 34134 Daejeon, Republic of Korea
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9
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Zheng Z, Liu K, Chen X, Qiao B, Ma H, Liu D, Liu L, Shen D. High-performance flexible UV photodetector based on self-supporting ZnO nano-networks fabricated by substrate-free chemical vapor deposition. NANOTECHNOLOGY 2021; 32:475201. [PMID: 34371489 DOI: 10.1088/1361-6528/ac1bda] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 08/08/2021] [Indexed: 05/24/2023]
Abstract
Self-supporting ZnO nano-networks have been demonstrated by a substrate-free chemical vapor deposition process for the application as flexible ultraviolet (UV) photodetector. The device shows a responsivity of ∼300 mA W-1over a wide wavelength range from 254 to 365 nm and a high UV/visible rejection ratio of more than 104. More interestingly, a short 90%-10% decay time of <0.12 s can be observed in the air atmosphere, and the current can fully recover to its original dark value within 1 s after switching off the light. The quick response speed should be associated with the wire-wire junction barriers and the adsorption/desorption process of oxygen molecules on the oxygen vacancies near the surface of the ZnO. In addition, the photocurrent, the dark current and the response speed of the ZnO nano-networks flexible UV photodetector nearly stay the same under different bending conditions, suggesting the excellent photoelectric stability and repeatability. Such a simple and cheap way for fabricating self-supporting ZnO-based devices has broad application prospects in the fields of flexible and wearable electronic devices.
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Affiliation(s)
- Zhiyao Zheng
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Kewei Liu
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Xing Chen
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China
| | - Baoshi Qiao
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Hongyu Ma
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Deming Liu
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China
| | - Lei Liu
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Dezhen Shen
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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10
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Zhang P, Zhang Y, Wang W, Gao L, Li G, Zhang S, Lu J, Yu Y, Zhang J. Multispectral photodetectors based on 2D material/Cs 3Bi 2I 9heterostructures with high detectivity. NANOTECHNOLOGY 2021; 32:415202. [PMID: 34225260 DOI: 10.1088/1361-6528/ac1130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 07/05/2021] [Indexed: 06/13/2023]
Abstract
Group VA metal halide-based perovskites have emerged as intensively explored Pb-free perovskites, owing to their excellent environmental stability and low-toxicity. However, the relatively low carrier mobility and high photocarrier recombination rates restrict their applications in photodetectors. One promising approach to achieve higher performance is to integrate these Pb-free perovskites with 2D materials to form heterostructures. Here, we report on the high sensitivity photodetectors based on MoS2/Cs3Bi2I9and graphene/Cs3Bi2I9heterostructures for multispectral regions. The heterostructures combine the high carrier mobility of 2D materials with superior light-harvesting properties of perovskites, as well as the effective built-in electric filed at the junction area, leading to efficient photocarrier separation and extraction. The specific detectivity of MoS2/Cs3Bi2I9device reaches 1.15 × 1013Jones for the detection of ultraviolet (UV) light of 325 nm, which is four orders of magnitude higher than UV detectors built on GaN. As a result of the efficient dark current suppression, the specific detectivity of graphene/Cs3Bi2I9photodetector can be promoted to 5.24 × 1011Jones, 1.33 × 1011Jones, and 1.12 × 1011Jones for the detection of 325 nm, 447 nm, and 532 nm light, respectively.
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Affiliation(s)
- Peng Zhang
- School of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 211189, People's Republic of China
| | - Yong Zhang
- School of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 211189, People's Republic of China
| | - Wenhui Wang
- School of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 211189, People's Republic of China
| | - Lei Gao
- School of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 211189, People's Republic of China
| | - Gefei Li
- School of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 211189, People's Republic of China
| | - Sheng Zhang
- School of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 211189, People's Republic of China
| | - Junpeng Lu
- School of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 211189, People's Republic of China
| | - Yuanfang Yu
- School of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 211189, People's Republic of China
| | - Jialin Zhang
- School of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 211189, People's Republic of China
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