ENHANCEMENT IN UV SENSING PROPERTIES OF Zno:Ag NANOSTRUCTURED FILMS BY SURFACE FUNCTIONALIZATION WITH NOBLE METALIC AND BIMETALLIC NANOPARTICLES
In this study, Ag-doped ZnO (ZnO:Ag) nanostructured films were functionalized with silver nanoparticles (Ag NPs), silver-platinum bimetallic nanoparticles (AgPt NPs) and silver-gold bimetallic NPs (AgAu NPs) using a gas phase PVD process based on a Haberland type gas aggregatio...
| Main Authors: | , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Technical University of Moldova
2018-09-01
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| Series: | Journal of Engineering Science (Chişinău) |
| Subjects: | |
| Online Access: | https://jes.utm.md/wp-content/uploads/sites/20/2019/02/JES-2018-3_41-51.pdf |
| _version_ | 1818083241109749760 |
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| author | Vasile Postica Alexander Vahl Nicolae Magariu Maik-Ivo Terasa Mathias Hoppe Bruno Viana Patrick Aschehoug Thierry Pauporté Ion Tiginyanu Oleksandr Polonskyi Victor Sontea Lee Chow Lorenz Kienle Rainer Adelung Franz Faupel Oleg Lupan |
| author_facet | Vasile Postica Alexander Vahl Nicolae Magariu Maik-Ivo Terasa Mathias Hoppe Bruno Viana Patrick Aschehoug Thierry Pauporté Ion Tiginyanu Oleksandr Polonskyi Victor Sontea Lee Chow Lorenz Kienle Rainer Adelung Franz Faupel Oleg Lupan |
| author_sort | Vasile Postica |
| collection | DOAJ |
| description | In this study, Ag-doped ZnO (ZnO:Ag) nanostructured films were functionalized with silver nanoparticles (Ag NPs), silver-platinum bimetallic nanoparticles (AgPt NPs) and silver-gold bimetallic NPs (AgAu NPs) using a gas phase PVD process based on a Haberland type gas aggregation cluster source and unipolar DC planar magnetron sputtering. Ultraviolet (UV) sensing investigations showed arespectable time constants reduction for rising and decaying photocurrents, as well as an increase for the UV response. Compared to a pristine nanostructured film the surface functionalization with Ag, AgPt and AgAu increased the UV response by factors of 2.7, 3.5 and 4, respectively. The increased performances of the here presented ZnO:Ag nanostructured films functionalized with monometallic and bimetallic NPs based photodetectors are explained by the increased lifetime of photogenerated electron –hole pairs, as well as the formation of nanoscale Schottky barriers at the interface of Au/ZnO:Ag and Pt/ZnO:Ag. |
| first_indexed | 2024-12-10T19:34:52Z |
| format | Article |
| id | doaj.art-1a691e40568d45339522116616ff19a8 |
| institution | Directory Open Access Journal |
| issn | 2587-3474 2587-3482 |
| language | English |
| last_indexed | 2024-12-10T19:34:52Z |
| publishDate | 2018-09-01 |
| publisher | Technical University of Moldova |
| record_format | Article |
| series | Journal of Engineering Science (Chişinău) |
| spelling | doaj.art-1a691e40568d45339522116616ff19a82022-12-22T01:36:10ZengTechnical University of MoldovaJournal of Engineering Science (Chişinău)2587-34742587-34822018-09-01XXV3415110.5281/zenodo.2557280ENHANCEMENT IN UV SENSING PROPERTIES OF Zno:Ag NANOSTRUCTURED FILMS BY SURFACE FUNCTIONALIZATION WITH NOBLE METALIC AND BIMETALLIC NANOPARTICLESVasile Postica0Alexander Vahl1Nicolae Magariu2Maik-Ivo Terasa3Mathias Hoppe4Bruno Viana5Patrick Aschehoug6Thierry Pauporté7Ion Tiginyanu8Oleksandr Polonskyi9Victor Sontea10Lee Chow11Lorenz Kienle12Rainer Adelung13Franz Faupel14Oleg Lupan15Technical University of MoldovaInstitute for Materials Science, Kiel University, GermanyTechnical University of MoldovaInstitute for Materials Science, Kiel University, GermanyInstitute for Materials Science, Kiel University, Germany Institut de Recherche de Chimie Paris, France Institut de Recherche de Chimie Paris, France Institut de Recherche de Chimie Paris, FranceInstituteof Electronic Engineering and Nanotechnology, Chisinau, Republic of MoldovaInstitute for Materials Science, Kiel University, GermanyTechnical University of MoldovaUniversity of Central Florida, Orlando, FL 32816USAInstitute for Materials Science, Kiel University, GermanyInstitute for Materials Science, Kiel University, GermanyInstitute for Materials Science, Kiel University, GermanyTechnical University of MoldovaIn this study, Ag-doped ZnO (ZnO:Ag) nanostructured films were functionalized with silver nanoparticles (Ag NPs), silver-platinum bimetallic nanoparticles (AgPt NPs) and silver-gold bimetallic NPs (AgAu NPs) using a gas phase PVD process based on a Haberland type gas aggregation cluster source and unipolar DC planar magnetron sputtering. Ultraviolet (UV) sensing investigations showed arespectable time constants reduction for rising and decaying photocurrents, as well as an increase for the UV response. Compared to a pristine nanostructured film the surface functionalization with Ag, AgPt and AgAu increased the UV response by factors of 2.7, 3.5 and 4, respectively. The increased performances of the here presented ZnO:Ag nanostructured films functionalized with monometallic and bimetallic NPs based photodetectors are explained by the increased lifetime of photogenerated electron –hole pairs, as well as the formation of nanoscale Schottky barriers at the interface of Au/ZnO:Ag and Pt/ZnO:Ag.https://jes.utm.md/wp-content/uploads/sites/20/2019/02/JES-2018-3_41-51.pdfUV photodetectorzinc oxidesilver nanoparticlesnanostructured films |
| spellingShingle | Vasile Postica Alexander Vahl Nicolae Magariu Maik-Ivo Terasa Mathias Hoppe Bruno Viana Patrick Aschehoug Thierry Pauporté Ion Tiginyanu Oleksandr Polonskyi Victor Sontea Lee Chow Lorenz Kienle Rainer Adelung Franz Faupel Oleg Lupan ENHANCEMENT IN UV SENSING PROPERTIES OF Zno:Ag NANOSTRUCTURED FILMS BY SURFACE FUNCTIONALIZATION WITH NOBLE METALIC AND BIMETALLIC NANOPARTICLES Journal of Engineering Science (Chişinău) UV photodetector zinc oxide silver nanoparticles nanostructured films |
| title | ENHANCEMENT IN UV SENSING PROPERTIES OF Zno:Ag NANOSTRUCTURED FILMS BY SURFACE FUNCTIONALIZATION WITH NOBLE METALIC AND BIMETALLIC NANOPARTICLES |
| title_full | ENHANCEMENT IN UV SENSING PROPERTIES OF Zno:Ag NANOSTRUCTURED FILMS BY SURFACE FUNCTIONALIZATION WITH NOBLE METALIC AND BIMETALLIC NANOPARTICLES |
| title_fullStr | ENHANCEMENT IN UV SENSING PROPERTIES OF Zno:Ag NANOSTRUCTURED FILMS BY SURFACE FUNCTIONALIZATION WITH NOBLE METALIC AND BIMETALLIC NANOPARTICLES |
| title_full_unstemmed | ENHANCEMENT IN UV SENSING PROPERTIES OF Zno:Ag NANOSTRUCTURED FILMS BY SURFACE FUNCTIONALIZATION WITH NOBLE METALIC AND BIMETALLIC NANOPARTICLES |
| title_short | ENHANCEMENT IN UV SENSING PROPERTIES OF Zno:Ag NANOSTRUCTURED FILMS BY SURFACE FUNCTIONALIZATION WITH NOBLE METALIC AND BIMETALLIC NANOPARTICLES |
| title_sort | enhancement in uv sensing properties of zno ag nanostructured films by surface functionalization with noble metalic and bimetallic nanoparticles |
| topic | UV photodetector zinc oxide silver nanoparticles nanostructured films |
| url | https://jes.utm.md/wp-content/uploads/sites/20/2019/02/JES-2018-3_41-51.pdf |
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