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Aier KM, Dhar JC. Surface modification of ZnO nanowires using single walled carbon nanotubes for efficient UV-visible broadband photodetection. NANOTECHNOLOGY 2023; 35:105205. [PMID: 38055963 DOI: 10.1088/1361-6528/ad12e5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 12/06/2023] [Indexed: 12/08/2023]
Abstract
A UV-visible broadband photodetector (PD) based on single walled carbon nanotube (SWCNT)/Zinc oxide nanowire (ZnO NW) hybrid is being reported. This work focuses on designing a stable, fast, efficient and reliable hybrid broadband PD by surface modification of ZnO NWs using SWCNT. The study shows that spectral response of the hybrid heterostructure (HS) spans beyond the UV spectrum and into the visible region which is due to the integration of SWCNTs. Photoluminescence (PL) study reveals surface plasmon (SP) mediated resonance phenomenon resulting in an increase in PL intensity. High nanotube charge carrier mobility and conductivity allows the hybrid HS to attain high values of spectral responsivity (Rλ= 187.77 A W-1), external quantum efficiency (EQE = 5.82 × 104%), specific detectivity (D* = 7.04 × 1011Jones) and small noise equivalent power (NEP = 4.77 × 10-12W) values for the SWCNT/ZnO NW hybrid HS. The device also gives quick rise (trise= 0.43 s) and fall (tfall= 0.60 s) time values.
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Affiliation(s)
- K Moatemsu Aier
- Department of Electronics and Communication Engineering, National Institute of Technology Nagaland, Chumukedima, Nagaland-797103, India
| | - Jay Chandra Dhar
- Department of Electronics and Communication Engineering, National Institute of Technology Nagaland, Chumukedima, Nagaland-797103, India
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2
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Acid-modified CNT/Zinc Oxide nanowires based high performance broadband photodetector. Sci Rep 2023; 13:3193. [PMID: 36823227 PMCID: PMC9950455 DOI: 10.1038/s41598-023-30426-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 02/22/2023] [Indexed: 02/25/2023] Open
Abstract
In this study, the authors have reported the impact of post-treatment via exposure to acid on single walled carbon nanotubes (SWNTs) thin film (TF) based SWNT/ZnO Nanowire (NW) broad band photodetector. The ZnO NWs were deposited on SWNT (with and without acid-treated) using a simple catalytic free process called glancing angle deposition (GLAD) technique. Acid-treated SWNT samples warranted the growth of high quality ZnO NWs over them. On fabricating photodetectors with the acid-treated ZnO NW/SWNT TF heterostructure (HS) gave better device performance as compared to the as-deposited ZnO NW/SWNT TF HS (without acid-treatment) sample. The acid-treated device showed a large responsivity (85.45 A/W), specific detectivity (0.859 × 1012 Jones) and with a low noise equivalent power of 3.9101 pW values. Moreover, the oxygen adsorption-desorption mechanism in SWNTs impacted the electrical resistance of the nanotubes which affected nanotube conductivity. The acid-treatment favoured relatively faster charge separation at the ZnO NW/SWNT heterojunction thus providing a fast device response (trise = 0.11 s, tfall = 0.39 s at + 5 V). The fabricated acid-treated device showed good broad band detection (250 nm-750 nm) which was explained with respect to the optical absorption profile of the sample.
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3
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Lou TJ, Wang JQ, Wang W, Wang T, Qian PF, Bao ZL, Jing LC, Yuan XT, Geng HZ. Tannic Acid‐Modified Single‐Walled Carbon nanotube/Zinc Oxide Nanoparticle Thin Films for UV‐Visible Semitransparent Photodiode Type Photodetectors. CHEMPHOTOCHEM 2022. [DOI: 10.1002/cptc.202100208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Tian-Jiao Lou
- TGU: Tiangong University … No. 399 Binshui West Road, Xiqing District, Tianjin Tianjin CHINA
| | - Jing-Qi Wang
- TGU: Tiangong University … No. 399 Binshui West Road, Xiqing District, Tianjin Tianjin CHINA
| | - Wenyi Wang
- TGU: Tiangong University … No. 399 Binshui West Road, Xiqing District, Tianjin Tianjin CHINA
| | - Tao Wang
- TGU: Tiangong University … No. 399 Binshui West Road, Xiqing District, Tianjin Tianjin CHINA
| | - Peng-Fei Qian
- TGU: Tiangong University … No. 399 Binshui West Road, Xiqing District, Tianjin Tianjin CHINA
| | - Ze-Long Bao
- TGU: Tiangong University … No. 399 Binshui West Road, Xiqing District, Tianjin Tianjin CHINA
| | - Li-Chao Jing
- TGU: Tiangong University … No. 399 Binshui West Road, Xiqing District, Tianjin Tianjin CHINA
| | - Xiao-Tong Yuan
- Tiangong University … No. 399 Binshui West Road, Xiqing District, Tianjin Tianjin CHINA
| | - Hong-Zhang Geng
- Tiangong University School of Material Science and Engineering No 399, Binshui West Rd., Xiqing Dist. 300387 Tianjin CHINA
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Yadav PVK, Ajitha B, Kumar Reddy YA, Sreedhar A. Recent advances in development of nanostructured photodetectors from ultraviolet to infrared region: A review. CHEMOSPHERE 2021; 279:130473. [PMID: 33892456 DOI: 10.1016/j.chemosphere.2021.130473] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 03/10/2021] [Accepted: 03/30/2021] [Indexed: 05/25/2023]
Abstract
Herein, we aim to evaluate the photodetector performance of various nanostructured materials (thin films, 2-D nanolayers, 1-D nanowires, and 0-D quantum dots) in ultraviolet (UV), visible, and infrared (IR) regions. Specifically, semiconductor-based metal oxides such as ZnO, Ga2O3, SnO2, TiO2, and WO3 are the majority preferred materials for UV photodetection due to their broad band gap, stability, and relatively simple fabrication processes. Whereas, the graphene-based hetero- and nano-structured composites are considered as prominent visible light active photodetectors. Interestingly, graphene exhibits broad band spectral absorption and ultra-high mobility, which derives graphene as a suitable candidate for visible detector. Further, due to the very low absorption rate of graphene (2%), various materials have been integrated with graphene (rGO-CZS, PQD-rGO, N-SLG, and GO doped PbI2). In the case of IR photodetectors, quantum dot IR detectors prevails significant advantage over the quantum well IR detectors due to the 0-D quantum confinement and ability to absorb the light with any polarization. In such a way, we discussed the most recent developments on IR detectors using InAs and PbS quantum dot nanostructures. Overall, this review gives clear view on the development of suitable device architecture under prominent nanostructures to tune the photodetector performance from UV to IR spectral regions for wide-band photodetectors.
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Affiliation(s)
- P V Karthik Yadav
- Department of Physics, Indian Institute of Information Technology, Design and Manufacturing, Kancheepuram, Off Vandalur-Kelambakkam Road, Chennai, 600127, India
| | - B Ajitha
- Division of Physics, School of Advanced Sciences, Vellore Institute of Technology (VIT), Vandalur - Kelambakkam Road, Chennai, 600127, India
| | - Y Ashok Kumar Reddy
- Department of Physics, Indian Institute of Information Technology, Design and Manufacturing, Kancheepuram, Off Vandalur-Kelambakkam Road, Chennai, 600127, India.
| | - Adem Sreedhar
- Department of Physics, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, Gyeonggi-do, 461701, Republic of Korea.
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5
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Zappia M, Bianca G, Bellani S, Curreli N, Sofer Z, Serri M, Najafi L, Piccinni M, Oropesa-Nuñez R, Marvan P, Pellegrini V, Kriegel I, Prato M, Cupolillo A, Bonaccorso F. Two-Dimensional Gallium Sulfide Nanoflakes for UV-Selective Photoelectrochemical-type Photodetectors. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2021; 125:11857-11866. [PMID: 34276861 PMCID: PMC8279705 DOI: 10.1021/acs.jpcc.1c03597] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 04/28/2021] [Indexed: 06/13/2023]
Abstract
Two-dimensional (2D) transition-metal monochalcogenides have been recently predicted to be potential photo(electro)catalysts for water splitting and photoelectrochemical (PEC) reactions. Differently from the most established InSe, GaSe, GeSe, and many other monochalcogenides, bulk GaS has a large band gap of ∼2.5 eV, which increases up to more than 3.0 eV with decreasing its thickness due to quantum confinement effects. Therefore, 2D GaS fills the void between 2D small-band-gap semiconductors and insulators, resulting of interest for the realization of van der Waals type-I heterojunctions in photocatalysis, as well as the development of UV light-emitting diodes, quantum wells, and other optoelectronic devices. Based on theoretical calculations of the electronic structure of GaS as a function of layer number reported in the literature, we experimentally demonstrate, for the first time, the PEC properties of liquid-phase exfoliated GaS nanoflakes. Our results indicate that solution-processed 2D GaS-based PEC-type photodetectors outperform the corresponding solid-state photodetectors. In fact, the 2D morphology of the GaS flakes intrinsically minimizes the distance between the photogenerated charges and the surface area at which the redox reactions occur, limiting electron-hole recombination losses. The latter are instead deleterious for standard solid-state configurations. Consequently, PEC-type 2D GaS photodetectors display a relevant UV-selective photoresponse. In particular, they attain responsivities of 1.8 mA W-1 in 1 M H2SO4 [at 0.8 V vs reversible hydrogen electrode (RHE)], 4.6 mA W-1 in 1 M Na2SO4 (at 0.9 V vs RHE), and 6.8 mA W-1 in 1 M KOH (at 1.1. V vs RHE) under 275 nm illumination wavelength with an intensity of 1.3 mW cm-2. Beyond the photodetector application, 2D GaS-based PEC-type devices may find application in tandem solar PEC cells in combination with other visible-sensitive low-band-gap materials, including transition-metal monochalcogenides recently established for PEC solar energy conversion applications.
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Affiliation(s)
- Marilena
I. Zappia
- BeDimensional
Spa., via Lungotorrente
Secca 3D, 16163 Genova, Italy
- Department
of Physics, University of Calabria, Via P. Bucci cubo 31/C, 87036 Rende, CS, Italy
| | - Gabriele Bianca
- Graphene
Labs, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
- Dipartimento
di Chimica e Chimica Industriale, Università
degli Studi di Genova, via Dodecaneso 31, 16146 Genoa, Italy
| | - Sebastiano Bellani
- BeDimensional
Spa., via Lungotorrente
Secca 3D, 16163 Genova, Italy
- Graphene
Labs, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
| | - Nicola Curreli
- Functional
Nanosystems, Istituto Italiano di Tecnologia (IIT), via Morego 30, 16163 Genova, Italy
| | - Zdeněk Sofer
- Department
of Inorganic Chemistry, University of Chemistry
and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Michele Serri
- Graphene
Labs, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
| | - Leyla Najafi
- BeDimensional
Spa., via Lungotorrente
Secca 3D, 16163 Genova, Italy
- Graphene
Labs, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
| | - Marco Piccinni
- Graphene
Labs, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
- Dipartimento
di Chimica e Chimica Industriale, Università
degli Studi di Genova, via Dodecaneso 31, 16146 Genoa, Italy
| | - Reinier Oropesa-Nuñez
- BeDimensional
Spa., via Lungotorrente
Secca 3D, 16163 Genova, Italy
- Department
of Material Science and Engineering, Uppsala
University, Box 534, 75121 Uppsala, Sweden
| | - Petr Marvan
- Department
of Inorganic Chemistry, University of Chemistry
and Technology Prague, Technická 5, 166 28 Prague 6, Czech Republic
| | - Vittorio Pellegrini
- BeDimensional
Spa., via Lungotorrente
Secca 3D, 16163 Genova, Italy
- Graphene
Labs, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
| | - Ilka Kriegel
- Functional
Nanosystems, Istituto Italiano di Tecnologia (IIT), via Morego 30, 16163 Genova, Italy
| | - Mirko Prato
- Materials
Characterization Facility, Istituto Italiano di Tecnologia, via Morego 30, Genova 16163, Italy
| | - Anna Cupolillo
- Department
of Physics, University of Calabria, Via P. Bucci cubo 31/C, 87036 Rende, CS, Italy
| | - Francesco Bonaccorso
- BeDimensional
Spa., via Lungotorrente
Secca 3D, 16163 Genova, Italy
- Graphene
Labs, Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy
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Choi MS, Park T, Kim WJ, Hur J. High-Performance Ultraviolet Photodetector Based on a Zinc Oxide Nanoparticle@Single-Walled Carbon Nanotube Heterojunction Hybrid Film. NANOMATERIALS 2020; 10:nano10020395. [PMID: 32102300 PMCID: PMC7075298 DOI: 10.3390/nano10020395] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 02/19/2020] [Accepted: 02/21/2020] [Indexed: 11/16/2022]
Abstract
A hybrid film consisting of zinc oxide nanoparticles (ZnO NPs) and carbon nanotubes (CNTs) is formed on a glass substrate using a simple and swift spin coating process for the use in ultraviolet photodetectors (UV PDs). The incorporation of various types of CNTs into ZnO NPs (ZnO@CNT) enhances the performance of UV PDs with respect to sensitivity, photoresponse, and long-term operation stability when compared with pristine ZnO NP films. In particular, the introduction of single-walled CNTs (SWNTs) exhibits a superior performance when compared with the multiwalled CNTs (MWNTs) because SWNTs can not only facilitate the stability of free electrons generated by the O2 desorption on ZnO under UV irradiation owing to the built-in potential between ZnO and SWNT heterojunctions, but also allow facile and efficient transport pathways for electrons through SWNTs with high aspect ratio and low defect density. Furthermore, among the various SWNTs (arc-discharged (A-SWNT), Hipco (H-SWNT), and CoMoCat (C-SWNT) SWNTs), we demonstrate the ZnO@A-SWNT hybrid film exhibits the best performance because of higher conductivity and aspect ratio in A-SWNTs when compared with those of other types of SWNTs. At the optimized conditions for the ZnO@A-SWNT film (ratio of A-SWNTs and ZnO NPs and electrode distance), ZnO@A-SWNT displays a sensitivity of 4.9 × 103 % with an on/off current ratio of ~104 at the bias of 2 V under the UV wavelength of 365 nm (0.47 mW/cm2). In addition, the stability in long-term operation and photoresponse time are significantly improved by the introduction of A-SWNTs into the ZnO NP film when compared with the bare ZnO NPs film.
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Affiliation(s)
- Myung-Soo Choi
- Department of Chemical and Biological Engineering, Gachon University, Seongnam-si, Gyeonggi-do 13120, Korea; (M.-S.C.); (T.P.)
| | - Taehyun Park
- Department of Chemical and Biological Engineering, Gachon University, Seongnam-si, Gyeonggi-do 13120, Korea; (M.-S.C.); (T.P.)
| | - Woo-Jae Kim
- Department of Chemical Engineering and Material Science, Ewha Womans University, Seoul 03760, Korea
- Correspondence: (W.J.); (J.H.); Tel.: +82-2-3277-4372 (W.J.); +82-2-750-5593 (J.H.)
| | - Jaehyun Hur
- Department of Chemical and Biological Engineering, Gachon University, Seongnam-si, Gyeonggi-do 13120, Korea; (M.-S.C.); (T.P.)
- Correspondence: (W.J.); (J.H.); Tel.: +82-2-3277-4372 (W.J.); +82-2-750-5593 (J.H.)
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7
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Butanovs E, Vlassov S, Kuzmin A, Piskunov S, Butikova J, Polyakov B. Fast-Response Single-Nanowire Photodetector Based on ZnO/WS 2 Core/Shell Heterostructures. ACS APPLIED MATERIALS & INTERFACES 2018; 10:13869-13876. [PMID: 29619827 DOI: 10.1021/acsami.8b02241] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The surface plays an exceptionally important role in nanoscale materials, exerting a strong influence on their properties. Consequently, even a very thin coating can greatly improve the optoelectronic properties of nanostructures by modifying the light absorption and spatial distribution of charge carriers. To use these advantages, 1D/1D heterostructures of ZnO/WS2 core/shell nanowires with a-few-layers-thick WS2 shell were fabricated. These heterostructures were thoroughly characterized by scanning and transmission electron microscopy, X-ray diffraction, and Raman spectroscopy. Then, a single-nanowire photoresistive device was assembled by mechanically positioning ZnO/WS2 core/shell nanowires onto gold electrodes inside a scanning electron microscope. The results show that a few layers of WS2 significantly enhance the photosensitivity in the short wavelength range and drastically (almost 2 orders of magnitude) improve the photoresponse time of pure ZnO nanowires. The fast response time of ZnO/WS2 core/shell nanowire was explained by electrons and holes sinking from ZnO nanowire into WS2 shell, which serves as a charge carrier channel in the ZnO/WS2 heterostructure. First-principles calculations suggest that the interface layer i-WS2, bridging ZnO nanowire surface and WS2 shell, might play a role of energy barrier, preventing the backward diffusion of charge carriers into ZnO nanowire.
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Affiliation(s)
- Edgars Butanovs
- Institute of Solid State Physics , University of Latvia , Kengaraga Street 8 , LV-1063 Riga , Latvia
| | - Sergei Vlassov
- Institute of Physics , University of Tartu , W. Ostwaldi 1 , 50411 Tartu , Estonia
| | - Alexei Kuzmin
- Institute of Solid State Physics , University of Latvia , Kengaraga Street 8 , LV-1063 Riga , Latvia
| | - Sergei Piskunov
- Institute of Solid State Physics , University of Latvia , Kengaraga Street 8 , LV-1063 Riga , Latvia
| | - Jelena Butikova
- Institute of Solid State Physics , University of Latvia , Kengaraga Street 8 , LV-1063 Riga , Latvia
| | - Boris Polyakov
- Institute of Solid State Physics , University of Latvia , Kengaraga Street 8 , LV-1063 Riga , Latvia
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Saravanan A, Huang BR, Kathiravan D, Prasannan A. Natural Biowaste-Cocoon-Derived Granular Activated Carbon-Coated ZnO Nanorods: A Simple Route To Synthesizing a Core-Shell Structure and Its Highly Enhanced UV and Hydrogen Sensing Properties. ACS APPLIED MATERIALS & INTERFACES 2017; 9:39771-39780. [PMID: 29052978 DOI: 10.1021/acsami.7b11051] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Granular activated carbon (GAC) materials were prepared via simple gas activation of silkworm cocoons and were coated on ZnO nanorods (ZNRs) by the facile hydrothermal method. The present combination of GAC and ZNRs shows a core-shell structure (where the GAC is coated on the surface of ZNRs) and is exposed by systematic material analysis. The as-prepared samples were then fabricated as dual-functional sensors and, most fascinatingly, the as-fabricated core-shell structure exhibits better UV and H2 sensing properties than those of as-fabricated ZNRs and GAC. Thus, the present core-shell structure-based H2 sensor exhibits fast responses of 11% (10 ppm) and 23.2% (200 ppm) with ultrafast response and recovery. However, the UV sensor offers an ultrahigh photoresponsivity of 57.9 A W-1, which is superior to that of as-grown ZNRs (0.6 A W-1). Besides this, switching photoresponse of GAC/ZNR core-shell structures exhibits a higher switching ratio (between dark and photocurrent) of 1585, with ultrafast response and recovery, than that of as-grown ZNRs (40). Because of the fast adsorption ability of GAC, it was observed that the finest distribution of GAC on ZNRs results in rapid electron transportation between the conduction bands of GAC and ZNRs while sensing H2 and UV. Furthermore, the present core-shell structure-based UV and H2 sensors also well-retained excellent sensitivity, repeatability, and long-term stability. Thus, the salient feature of this combination is that it provides a dual-functional sensor with biowaste cocoon and ZnO, which is ecological and inexpensive.
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Affiliation(s)
- Adhimoorthy Saravanan
- Graduate Institute of Electro-Optical Engineering and Department of Electronic and Computer Engineering and ‡Materials Science Engineering, National Taiwan University of Science and Technology , Taipei 106, Taiwan, R.O.C
| | - Bohr-Ran Huang
- Graduate Institute of Electro-Optical Engineering and Department of Electronic and Computer Engineering and ‡Materials Science Engineering, National Taiwan University of Science and Technology , Taipei 106, Taiwan, R.O.C
| | - Deepa Kathiravan
- Graduate Institute of Electro-Optical Engineering and Department of Electronic and Computer Engineering and ‡Materials Science Engineering, National Taiwan University of Science and Technology , Taipei 106, Taiwan, R.O.C
| | - Adhimoorthy Prasannan
- Graduate Institute of Electro-Optical Engineering and Department of Electronic and Computer Engineering and ‡Materials Science Engineering, National Taiwan University of Science and Technology , Taipei 106, Taiwan, R.O.C
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Li G, Suja M, Chen M, Bekyarova E, Haddon RC, Liu J, Itkis ME. Visible-Blind UV Photodetector Based on Single-Walled Carbon Nanotube Thin Film/ZnO Vertical Heterostructures. ACS APPLIED MATERIALS & INTERFACES 2017; 9:37094-37104. [PMID: 28948759 DOI: 10.1021/acsami.7b07765] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Ultraviolet (UV) photodetectors based on heterojunctions of conventional (Ge, Si, and GaAs) and wide bandgap semiconductors have been recently demonstrated, but achieving high UV sensitivity and visible-blind photodetection still remains a challenge. Here, we utilized a semitransparent film of p-type semiconducting single-walled carbon nanotubes (SC-SWNTs) with an energy gap of 0.68 ± 0.07 eV in combination with a molecular beam epitaxy grown n-ZnO layer to build a vertical p-SC-SWNT/n-ZnO heterojunction-based UV photodetector. The resulting device shows a current rectification ratio of 103, a current photoresponsivity up to 400 A/W in the UV spectral range from 370 to 230 nm, and a low dark current. The detector is practically visible-blind with the UV-to-visible photoresponsivity ratio of 105 due to extremely short photocarrier lifetimes in the one-dimensional SWNTs because of strong electron-phonon interactions leading to exciton formation. In this vertical configuration, UV radiation penetrates the top semitransparent SC-SWNT layer with low losses (10-20%) and excites photocarriers within the n-ZnO layer in close proximity to the p-SC-SWNT/n-ZnO interface, where electron-hole pairs are efficiently separated by a high built-in electric field associated with the heterojunction.
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Affiliation(s)
- Guanghui Li
- Department of Chemical and Environmental Engineering, ‡Center for Nanoscale Science and Engineering, §Department of Electrical and Computer Engineering, and ∥Department of Chemistry, University of California , Riverside, California 92521, United States
| | - Mohammad Suja
- Department of Chemical and Environmental Engineering, ‡Center for Nanoscale Science and Engineering, §Department of Electrical and Computer Engineering, and ∥Department of Chemistry, University of California , Riverside, California 92521, United States
| | - Mingguang Chen
- Department of Chemical and Environmental Engineering, ‡Center for Nanoscale Science and Engineering, §Department of Electrical and Computer Engineering, and ∥Department of Chemistry, University of California , Riverside, California 92521, United States
| | - Elena Bekyarova
- Department of Chemical and Environmental Engineering, ‡Center for Nanoscale Science and Engineering, §Department of Electrical and Computer Engineering, and ∥Department of Chemistry, University of California , Riverside, California 92521, United States
| | - Robert C Haddon
- Department of Chemical and Environmental Engineering, ‡Center for Nanoscale Science and Engineering, §Department of Electrical and Computer Engineering, and ∥Department of Chemistry, University of California , Riverside, California 92521, United States
| | - Jianlin Liu
- Department of Chemical and Environmental Engineering, ‡Center for Nanoscale Science and Engineering, §Department of Electrical and Computer Engineering, and ∥Department of Chemistry, University of California , Riverside, California 92521, United States
| | - Mikhail E Itkis
- Department of Chemical and Environmental Engineering, ‡Center for Nanoscale Science and Engineering, §Department of Electrical and Computer Engineering, and ∥Department of Chemistry, University of California , Riverside, California 92521, United States
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Matsuzawa Y, Takada Y, Jintoku H, Kihara H, Yoshida M. Photopatterned Single-Walled Carbon Nanotube Films Utilizing the Adsorption/Desorption Processes of Photofunctional Dispersants. ACS APPLIED MATERIALS & INTERFACES 2016; 8:28400-28405. [PMID: 27718547 DOI: 10.1021/acsami.6b06169] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We describe the application of photodetachable and recyclable dispersants for single-walled carbon nanotubes (SWNTs) in the fabrication of photopatterned SWNT thin films. Because adsorption and desorption of the dispersants on the SWNT surfaces affect not only their dispersibility in water but also their solubility, SWNT photopatterns were obtained on glass substrates in only three steps, i.e., casting the SWNT/dispersant solution, UV-light exposure of the casted SWNT/dispersant films through a photomask, and subsequent rinsing with neutral water. This patterning procedure is simple and scalable and will enable us to prepare microfabricated SWNT thin films.
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Affiliation(s)
- Yoko Matsuzawa
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 5-2 1-1-1 Higashi Tsukuba 305-8565 Japan
| | - Yuko Takada
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 5-2 1-1-1 Higashi Tsukuba 305-8565 Japan
| | - Hirokuni Jintoku
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 5-2 1-1-1 Higashi Tsukuba 305-8565 Japan
| | - Hideyuki Kihara
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 5-2 1-1-1 Higashi Tsukuba 305-8565 Japan
| | - Masaru Yoshida
- Research Institute for Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 5-2 1-1-1 Higashi Tsukuba 305-8565 Japan
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Tao Z, Huang YA, Liu X, Chen J, Lei W, Wang X, Pan L, Pan J, Huang Q, Zhang Z. High-Performance Photo-Modulated Thin-Film Transistor Based on Quantum dots/Reduced Graphene Oxide Fragment-Decorated ZnO Nanowires. NANO-MICRO LETTERS 2016; 8:247-253. [PMID: 30460284 PMCID: PMC6223684 DOI: 10.1007/s40820-016-0083-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Accepted: 01/25/2016] [Indexed: 05/27/2023]
Abstract
In this paper, a photo-modulated transistor based on the thin-film transistor structure was fabricated on the flexible substrate by spin-coating and magnetron sputtering. A novel hybrid material that composed of CdSe quantum dots and reduced graphene oxide (RGO) fragment-decorated ZnO nanowires was synthesized to overcome the narrow optical sensitive waveband and enhance the photo-responsivity. Due to the enrichment of the interface and heterostructure by RGO fragments being utilized, the photo-responsivity of the transistor was improved to 2000 A W-1 and the photo-sensitive wavelength was extended from ultraviolet to visible. In addition, a positive back-gate voltage was employed to reduce the Schottky barrier width of RGO fragments and ZnO nanowires. As a result, the amount of carriers was increased by 10 folds via the modulation of back-gate voltage. With these inherent properties, such as integrated circuit capability and wide optical sensitive waveband, the transistor will manifest great potential in the future applications in photodetectors.
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Affiliation(s)
- Zhi Tao
- School of Electronic Science and Engineering, Southeast University, Nanjing, 210096 People’s Republic of China
- State Key Laboratory of Precision Measurement Technology and Instruments, Collaborative Innovation Center for Micro/Nano Fabrication, Device and System; Department of Precision Instrument, Tsinghua University, Beijing, 100084 People’s Republic of China
| | - Yi-an Huang
- School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, 100876 People’s Republic of China
| | - Xiang Liu
- School of Electronic Science and Engineering, Southeast University, Nanjing, 210096 People’s Republic of China
| | - Jing Chen
- School of Electronic Science and Engineering, Southeast University, Nanjing, 210096 People’s Republic of China
| | - Wei Lei
- School of Electronic Science and Engineering, Southeast University, Nanjing, 210096 People’s Republic of China
| | - Xiaofeng Wang
- Institute of Semiconductors, Chinese Academy of Science, Beijing, 100083 People’s Republic of China
| | - Lingfeng Pan
- Institute of Semiconductors, Chinese Academy of Science, Beijing, 100083 People’s Republic of China
| | - Jiangyong Pan
- School of Electronic Science and Engineering, Southeast University, Nanjing, 210096 People’s Republic of China
| | - Qianqian Huang
- School of Electronic Science and Engineering, Southeast University, Nanjing, 210096 People’s Republic of China
- State Key Laboratory of Precision Measurement Technology and Instruments, Collaborative Innovation Center for Micro/Nano Fabrication, Device and System; Department of Precision Instrument, Tsinghua University, Beijing, 100084 People’s Republic of China
| | - Zichen Zhang
- State Key Laboratory of Precision Measurement Technology and Instruments, Collaborative Innovation Center for Micro/Nano Fabrication, Device and System; Department of Precision Instrument, Tsinghua University, Beijing, 100084 People’s Republic of China
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12
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Microwave Assisted Synthesis and Characterization of Nanostructure Zinc Oxide-Graphene Oxide and Photo Degradation of Brilliant Blue. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.matpr.2016.01.123] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Saravanan A, Huang B, Lin J, Keiser G, Lin I. Fast Photoresponse and Long Lifetime UV Photodetectors and Field Emitters Based on ZnO/Ultrananocrystalline Diamond Films. Chemistry 2015; 21:16017-26. [PMID: 26382200 DOI: 10.1002/chem.201501538] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Adhimoorthy Saravanan
- Graduate Institute of Electro‐Optical Engineering and Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan (Republic of China)
| | - Bohr‐Ran Huang
- Graduate Institute of Electro‐Optical Engineering and Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan (Republic of China)
| | - Jun‐Cheng Lin
- Graduate Institute of Electro‐Optical Engineering and Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan (Republic of China)
| | - Gerd Keiser
- Boston University, Department of Electrical and Computer Engineering, Boston, (United States)
| | - I‐Nan Lin
- Department of Physics, Tamkang University, Tamsui 251, Taiwan (Republic of China)
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14
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Song J, Zeng H. Transparent Electrodes Printed with Nanocrystal Inks for Flexible Smart Devices. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/anie.201501233] [Citation(s) in RCA: 124] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Jizhong Song
- State Key Laboratory of Mechanics and Control of Mechanical Structures, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016 (China)
- Institute of Optoelectronics and Nanomaterials, Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094 (China)
| | - Haibo Zeng
- State Key Laboratory of Mechanics and Control of Mechanical Structures, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016 (China)
- Institute of Optoelectronics and Nanomaterials, Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094 (China)
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15
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Song J, Zeng H. Transparente Elektroden aus Nanokristalltinten für flexible Bauelemente. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201501233] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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16
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Chen SP, Durán Retamal JR, Lien DH, He JH, Liao YC. Inkjet-printed transparent nanowire thin film features for UV photodetectors. RSC Adv 2015. [DOI: 10.1039/c5ra12617g] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Stable nanowire suspensions are inkjet-printed to form the all-printed transparent UV photodetectors with fast responses.
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Affiliation(s)
- Shih-Pin Chen
- Department of Chemical Engineering
- National Taiwan University
- Taipei
- Taiwan
| | - José Ramón Durán Retamal
- Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
- King Abdullah University of Science and Technology (KAUST)
- Jeddah
- Saudi Arabia
| | - Der-Hsien Lien
- Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
- King Abdullah University of Science and Technology (KAUST)
- Jeddah
- Saudi Arabia
| | - Jr-Hau He
- Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
- King Abdullah University of Science and Technology (KAUST)
- Jeddah
- Saudi Arabia
| | - Ying-Chih Liao
- Department of Chemical Engineering
- National Taiwan University
- Taipei
- Taiwan
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17
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Lin KT, Chen HL, Lai YS, Liu YL, Tseng YC, Lin CH. Nanocrystallized CdS beneath the surface of a photoconductor for detection of UV light with picowatt sensitivity. ACS APPLIED MATERIALS & INTERFACES 2014; 6:19866-19875. [PMID: 25375995 DOI: 10.1021/am5052813] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this study, we demonstrated that the improvement of detection capability of cadmium sulfide (CdS) photoconductors in the ultraviolet (UV) regime is much larger than that in the visible regime, suggesting that the deep UV laser-treated CdS devices are very suitable for low-light detection in the UV regime. We determined that a nanocrystallized CdS photoconductor can behave as a picowatt-sensitive detector in the UV regime after ultra-shallow-region crystallization of the CdS film upon a single shot from a KrF laser. Photoluminescence and Raman spectra revealed that laser treatment increased the degree of crystallization of the CdS and led to the effective removal of defects in the region of a few tens nanometers beneath the surface of CdS, confirming the result by the transmission electron microscopy (TEM) images. Optical simulations suggested that UV light was almost completely absorbed in the shallow region beneath the surface of the CdS films, consistent with the observed region that underwent major crystal structure transformation. Accordingly, we noted a dramatic enhancement in responsivity of the CdS devices in the UV regime. Under a low bias voltage (1 mV), the treated CdS device provided a high responsivity of 74.7 A W(-1) and a detectivity of 1.0×10(14) Jones under illumination with a power density of 1.9 nW cm(-2). Even when the power of the UV irradiation on the device was only 3.5 pW, the device exhibited extremely high responsivity (7.3×10(5) A W(-1)) and detectivity (3.5×10(16) Jones) under a bias voltage of 1 V. Therefore, the strategy proposed in this study appears to have great potential for application in the development of CdS photoconductors for picowatt-level detection of UV light with low power consumption.
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Affiliation(s)
- Keng-Te Lin
- Department of Materials Science and Engineering, National Taiwan University , 1, Sec. 4, Roosevelt Road, Taipei, Taiwan
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18
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Yuksel R, Sarioba Z, Cirpan A, Hiralal P, Unalan HE. Transparent and flexible supercapacitors with single walled carbon nanotube thin film electrodes. ACS APPLIED MATERIALS & INTERFACES 2014; 6:15434-9. [PMID: 25127070 DOI: 10.1021/am504021u] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
We describe a simple process for the fabrication of transparent and flexible, solid-state supercapacitors. Symmetric electrodes made up of binder-free single walled carbon nanotube (SWCNT) thin films were deposited onto polydimethylsiloxane substrates by vacuum filtration followed by a stamping method, and solid-state supercapacitor devices were assembled using a gel electrolyte. An optical transmittance of 82% was found for 0.02 mg of SWCNTs, and a specific capacitance of 22.2 F/g was obtained. The power density can reach to 41.5 kW · kg(-1) and shows good capacity retention (94%) upon cycling over 500 times. Fabricated supercapacitors will be relevant for the realization of transparent and flexible devices with energy storage capabilities, displays and touch screens in particular.
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Affiliation(s)
- Recep Yuksel
- Department of Micro and Nanotechnology, Middle East Technical University , Ankara 06800, Turkey
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19
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Zhu Y, Zhang X, Li R, Li Q. Planar-defect-rich zinc oxide nanoparticles assembled on carbon nanotube films as ultraviolet emitters and photocatalysts. Sci Rep 2014; 4:4728. [PMID: 24740315 PMCID: PMC3989556 DOI: 10.1038/srep04728] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Accepted: 03/31/2014] [Indexed: 11/09/2022] Open
Abstract
Structural defects in zinc oxide (ZnO) nanoparticles are complex and hard to be controlled during the synthesis, however, diversifying the chemical and physical performances. Here we report a rapid and low-temperature deposition method to fabricate planar-defect-rich ZnO nanoparticles on freestanding and aligned carbon nanotube films, different from common treatments which remove structural defects as many as possible. The defect energy states are very close to the valence band of ZnO and serve as recombination centers for a nearly monochromatic ultraviolet luminescence within a wavelength range of 373–376 nm. The absence of point defects, especially of oxygen vacancies whose energy level is <1 eV below the conduction band, allows photoinduced electrons and holes to take parts in possible photocatalytic reactions rather than to recombine at the shallow energy levels of planar defects.
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Affiliation(s)
- Yunqing Zhu
- Key Laboratory of Nano-Devices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Ruoshui Road 398, Suzhou 215123, China
| | - Xiaohua Zhang
- Key Laboratory of Nano-Devices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Ruoshui Road 398, Suzhou 215123, China
| | - Ru Li
- Key Laboratory of Nano-Devices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Ruoshui Road 398, Suzhou 215123, China
| | - Qingwen Li
- Key Laboratory of Nano-Devices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Ruoshui Road 398, Suzhou 215123, China
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20
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Liu X, Du H, Sun XW. High-performance photoresponse of carbon-doped ZnO/reduced graphene oxide hybrid nanocomposites under UV and visible illumination. RSC Adv 2014. [DOI: 10.1039/c3ra46864j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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21
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Zhang G, Sun JL, Wei J, Sun H, Zhu JL. Significantly enhanced photoresponse in carbon nanotube film/TiO2 nanotube array heterojunctions by pre-electroforming. NANOTECHNOLOGY 2013; 24:465203. [PMID: 24158786 DOI: 10.1088/0957-4484/24/46/465203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Traditional TiO2 based photodetectors (PDs) suffer from high dark resistance, which increases loss of photoexcited charge carriers. Here, we report a new and simple way to improve the performance of PDs based on double-walled carbon nanotube (DWCNT)/TiO2 nanotube heterojunctions. Highly ordered TiO2 nanotube arrays were fabricated using a two-step anodic oxidation method, and coated with a DWCNT film, which functioned as a semitransparent electrode and a photoactive layer. Via pre-electroforming, the device was switched from a high resistance state (HRS) to a low resistance state (LRS). At an applied bias of 1 V, the dark resistance was reduced from 926 to 0.67 kΩ, as a result of the formation of oxygen vacancy related conducting filaments. The photoresponse (ΔI = Ip - Id, where Ip and Id represents photocurrent and dark current, respectively) of the PD in LRS reached 816.76 μA W(-1) under 532 nm laser illumination and 802.89 μA W(-1) under 1064 nm laser irradiation, which is 965 and 3980 times higher, respectively, than those obtained from the HRS device under the same conditions. This strategy for enhancing the photoresponse of TiO2 based PDs may have applications in further improving the power conversion efficiency of dye-sensitized solar cells.
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Affiliation(s)
- Guowei Zhang
- Department of Physics and State Key Lab of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, People's Republic of China
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22
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Lin P, Yan X, Zhang Z, Shen Y, Zhao Y, Bai Z, Zhang Y. Self-powered UV photosensor based on PEDOT:PSS/ZnO micro/nanowire with strain-modulated photoresponse. ACS APPLIED MATERIALS & INTERFACES 2013; 5:3671-6. [PMID: 23532753 DOI: 10.1021/am4008775] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Developing tailored micro/nanostructure interfaces is an effective way to make novel optoelectronic devices or enhance their performances. Here we report the fabrication of a PEDOT:PSS/ZnO micro/nanowire-based self-powered UV photosensor. The generation of photocurrent at zero bias is attributed to the separation of photogenerated electron-hole pairs within the built-in electric field at the PEDOT:PSS/ZnO interface upon UV light illumination. Furthermore, the piezotronic effect on the UV photoresponsivity under different strains is investigated, which is due to the modification of energy band diagram at the p-n heterojunction by strain-induced piezoelectric polarization. This study demonstrates a prospective approach to engineering the performance of a photodetector through straining and may offer theoretical supporting in future optoelectronic device fabrication and modification.
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Affiliation(s)
- Pei Lin
- State Key Laboratory for Advanced Metals and Materials, School of Materials Science and Engineering, Beijing 100083, People's Republic of China
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