Enhanced Photoluminescence of R6G Dyes from Metal Decorated Silicon Nanowires Fabricated through Metal Assisted Chemical Etching
In this study, we developed active substrates consisting of Ag-decorated silicon nanowires on a Si substrate using a single-step Metal Assisted Chemical Etching (MACE) process, and evaluated their performance in the identification of low concentrations of Rhodamine 6G using surface-enhanced photolum...
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MDPI AG
2023-02-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/16/4/1386 |
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| author | Ioannis Kochylas Anastasios Dimitriou Maria-Athina Apostolaki Maria-Christina Skoulikidou Vlassios Likodimos Spiros Gardelis Nikolaos Papanikolaou |
| author_facet | Ioannis Kochylas Anastasios Dimitriou Maria-Athina Apostolaki Maria-Christina Skoulikidou Vlassios Likodimos Spiros Gardelis Nikolaos Papanikolaou |
| author_sort | Ioannis Kochylas |
| collection | DOAJ |
| description | In this study, we developed active substrates consisting of Ag-decorated silicon nanowires on a Si substrate using a single-step Metal Assisted Chemical Etching (MACE) process, and evaluated their performance in the identification of low concentrations of Rhodamine 6G using surface-enhanced photoluminescence spectroscopy. Different structures with Ag-aggregates as well as Ag-dendrites were fabricated and studied depending on the etching parameters. Moreover, the addition of Au nanoparticles by simple drop-casting on the MACE-treated surfaces can enhance the photoluminescence significantly, and the structures have shown a Limit of Detection of Rhodamine 6G down to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mn>10</mn><mrow><mo>−</mo><mn>12</mn></mrow></msup></semantics></math></inline-formula> M for the case of the Ag-dendrites enriched with Au nanoparticles. |
| first_indexed | 2024-03-11T08:30:17Z |
| format | Article |
| id | doaj.art-439f217b6da840b0b35df39a39758bec |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T08:30:17Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-439f217b6da840b0b35df39a39758bec2023-11-16T21:49:04ZengMDPI AGMaterials1996-19442023-02-01164138610.3390/ma16041386Enhanced Photoluminescence of R6G Dyes from Metal Decorated Silicon Nanowires Fabricated through Metal Assisted Chemical EtchingIoannis Kochylas0Anastasios Dimitriou1Maria-Athina Apostolaki2Maria-Christina Skoulikidou3Vlassios Likodimos4Spiros Gardelis5Nikolaos Papanikolaou6Section of Condensed Matter Physics, Department of Physics, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, GreeceInstitute of Nanoscience and Nanotechnology, NCSR “Demokritos”, Aghia Paraskevi, 15310 Athens, GreeceSection of Condensed Matter Physics, Department of Physics, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, GreeceInstitute of Nanoscience and Nanotechnology, NCSR “Demokritos”, Aghia Paraskevi, 15310 Athens, GreeceSection of Condensed Matter Physics, Department of Physics, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, GreeceSection of Condensed Matter Physics, Department of Physics, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, GreeceInstitute of Nanoscience and Nanotechnology, NCSR “Demokritos”, Aghia Paraskevi, 15310 Athens, GreeceIn this study, we developed active substrates consisting of Ag-decorated silicon nanowires on a Si substrate using a single-step Metal Assisted Chemical Etching (MACE) process, and evaluated their performance in the identification of low concentrations of Rhodamine 6G using surface-enhanced photoluminescence spectroscopy. Different structures with Ag-aggregates as well as Ag-dendrites were fabricated and studied depending on the etching parameters. Moreover, the addition of Au nanoparticles by simple drop-casting on the MACE-treated surfaces can enhance the photoluminescence significantly, and the structures have shown a Limit of Detection of Rhodamine 6G down to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mn>10</mn><mrow><mo>−</mo><mn>12</mn></mrow></msup></semantics></math></inline-formula> M for the case of the Ag-dendrites enriched with Au nanoparticles.https://www.mdpi.com/1996-1944/16/4/1386surface enhanced photoluminescencesilver nanostructuresgold nanoparticlesRhodamine 6Gmetal-assisted chemical etching |
| spellingShingle | Ioannis Kochylas Anastasios Dimitriou Maria-Athina Apostolaki Maria-Christina Skoulikidou Vlassios Likodimos Spiros Gardelis Nikolaos Papanikolaou Enhanced Photoluminescence of R6G Dyes from Metal Decorated Silicon Nanowires Fabricated through Metal Assisted Chemical Etching Materials surface enhanced photoluminescence silver nanostructures gold nanoparticles Rhodamine 6G metal-assisted chemical etching |
| title | Enhanced Photoluminescence of R6G Dyes from Metal Decorated Silicon Nanowires Fabricated through Metal Assisted Chemical Etching |
| title_full | Enhanced Photoluminescence of R6G Dyes from Metal Decorated Silicon Nanowires Fabricated through Metal Assisted Chemical Etching |
| title_fullStr | Enhanced Photoluminescence of R6G Dyes from Metal Decorated Silicon Nanowires Fabricated through Metal Assisted Chemical Etching |
| title_full_unstemmed | Enhanced Photoluminescence of R6G Dyes from Metal Decorated Silicon Nanowires Fabricated through Metal Assisted Chemical Etching |
| title_short | Enhanced Photoluminescence of R6G Dyes from Metal Decorated Silicon Nanowires Fabricated through Metal Assisted Chemical Etching |
| title_sort | enhanced photoluminescence of r6g dyes from metal decorated silicon nanowires fabricated through metal assisted chemical etching |
| topic | surface enhanced photoluminescence silver nanostructures gold nanoparticles Rhodamine 6G metal-assisted chemical etching |
| url | https://www.mdpi.com/1996-1944/16/4/1386 |
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