Combination of surface- and interference-enhanced Raman scattering by CuS nanocrystals on nanopatterned Au structures
We present the results of a Raman study of optical phonons in CuS nanocrystals (NCs) with a low areal density fabricated through the Langmuir–Blodgett technology on nanopatterned Au nanocluster arrays using a combination of surface- and interference-enhanced Raman scattering (SERS and IERS, respecti...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Beilstein-Institut
2015-03-01
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| Series: | Beilstein Journal of Nanotechnology |
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| Online Access: | https://doi.org/10.3762/bjnano.6.77 |
| _version_ | 1819171634306613248 |
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| author | Alexander G. Milekhin Nikolay A. Yeryukov Larisa L. Sveshnikova Tatyana A. Duda Ekaterina E. Rodyakina Victor A. Gridchin Evgeniya S. Sheremet Dietrich R. T. Zahn |
| author_facet | Alexander G. Milekhin Nikolay A. Yeryukov Larisa L. Sveshnikova Tatyana A. Duda Ekaterina E. Rodyakina Victor A. Gridchin Evgeniya S. Sheremet Dietrich R. T. Zahn |
| author_sort | Alexander G. Milekhin |
| collection | DOAJ |
| description | We present the results of a Raman study of optical phonons in CuS nanocrystals (NCs) with a low areal density fabricated through the Langmuir–Blodgett technology on nanopatterned Au nanocluster arrays using a combination of surface- and interference-enhanced Raman scattering (SERS and IERS, respectively). Micro-Raman spectra of one monolayer of CuS NCs deposited on a bare Si substrate reveal only features corresponding to crystalline Si. However, a new relatively strong peak occurs in the Raman spectrum of CuS NCs on Au nanocluster arrays at 474 cm−1. This feature is related to the optical phonon mode in CuS NCs and manifests the SERS effect. For CuS NCs deposited on a SiO2 layer this phonon mode is also observed due to the IERS effect. Its intensity changes periodically with increasing SiO2 layer thickness for different laser excitation lines and is enhanced by a factor of about 30. CuS NCs formed on Au nanocluster arrays fabricated on IERS substrates combine the advantages of SERS and IERS and demonstrate stronger SERS enhancement allowing for the observation of Raman signals from CuS NCs with an ultra-low areal density. |
| first_indexed | 2024-12-22T19:54:24Z |
| format | Article |
| id | doaj.art-925c3a152fb54d959884713f85baa514 |
| institution | Directory Open Access Journal |
| issn | 2190-4286 |
| language | English |
| last_indexed | 2024-12-22T19:54:24Z |
| publishDate | 2015-03-01 |
| publisher | Beilstein-Institut |
| record_format | Article |
| series | Beilstein Journal of Nanotechnology |
| spelling | doaj.art-925c3a152fb54d959884713f85baa5142022-12-21T18:14:28ZengBeilstein-InstitutBeilstein Journal of Nanotechnology2190-42862015-03-016174975410.3762/bjnano.6.772190-4286-6-77Combination of surface- and interference-enhanced Raman scattering by CuS nanocrystals on nanopatterned Au structuresAlexander G. Milekhin0Nikolay A. Yeryukov1Larisa L. Sveshnikova2Tatyana A. Duda3Ekaterina E. Rodyakina4Victor A. Gridchin5Evgeniya S. Sheremet6Dietrich R. T. Zahn7A. V. Rzhanov Institute of Semiconductor Physics, pr. Lavrentieva, 13, Novosibirsk 630090, RussiaA. V. Rzhanov Institute of Semiconductor Physics, pr. Lavrentieva, 13, Novosibirsk 630090, RussiaA. V. Rzhanov Institute of Semiconductor Physics, pr. Lavrentieva, 13, Novosibirsk 630090, RussiaA. V. Rzhanov Institute of Semiconductor Physics, pr. Lavrentieva, 13, Novosibirsk 630090, RussiaA. V. Rzhanov Institute of Semiconductor Physics, pr. Lavrentieva, 13, Novosibirsk 630090, RussiaA. V. Rzhanov Institute of Semiconductor Physics, pr. Lavrentieva, 13, Novosibirsk 630090, RussiaA. V. Rzhanov Institute of Semiconductor Physics, pr. Lavrentieva, 13, Novosibirsk 630090, RussiaA. V. Rzhanov Institute of Semiconductor Physics, pr. Lavrentieva, 13, Novosibirsk 630090, RussiaWe present the results of a Raman study of optical phonons in CuS nanocrystals (NCs) with a low areal density fabricated through the Langmuir–Blodgett technology on nanopatterned Au nanocluster arrays using a combination of surface- and interference-enhanced Raman scattering (SERS and IERS, respectively). Micro-Raman spectra of one monolayer of CuS NCs deposited on a bare Si substrate reveal only features corresponding to crystalline Si. However, a new relatively strong peak occurs in the Raman spectrum of CuS NCs on Au nanocluster arrays at 474 cm−1. This feature is related to the optical phonon mode in CuS NCs and manifests the SERS effect. For CuS NCs deposited on a SiO2 layer this phonon mode is also observed due to the IERS effect. Its intensity changes periodically with increasing SiO2 layer thickness for different laser excitation lines and is enhanced by a factor of about 30. CuS NCs formed on Au nanocluster arrays fabricated on IERS substrates combine the advantages of SERS and IERS and demonstrate stronger SERS enhancement allowing for the observation of Raman signals from CuS NCs with an ultra-low areal density.https://doi.org/10.3762/bjnano.6.77copper sulfide (CuS) nanocrystalsinterference-enhanced Raman spectroscopyphononssurface-enhanced Raman spectroscopy |
| spellingShingle | Alexander G. Milekhin Nikolay A. Yeryukov Larisa L. Sveshnikova Tatyana A. Duda Ekaterina E. Rodyakina Victor A. Gridchin Evgeniya S. Sheremet Dietrich R. T. Zahn Combination of surface- and interference-enhanced Raman scattering by CuS nanocrystals on nanopatterned Au structures Beilstein Journal of Nanotechnology copper sulfide (CuS) nanocrystals interference-enhanced Raman spectroscopy phonons surface-enhanced Raman spectroscopy |
| title | Combination of surface- and interference-enhanced Raman scattering by CuS nanocrystals on nanopatterned Au structures |
| title_full | Combination of surface- and interference-enhanced Raman scattering by CuS nanocrystals on nanopatterned Au structures |
| title_fullStr | Combination of surface- and interference-enhanced Raman scattering by CuS nanocrystals on nanopatterned Au structures |
| title_full_unstemmed | Combination of surface- and interference-enhanced Raman scattering by CuS nanocrystals on nanopatterned Au structures |
| title_short | Combination of surface- and interference-enhanced Raman scattering by CuS nanocrystals on nanopatterned Au structures |
| title_sort | combination of surface and interference enhanced raman scattering by cus nanocrystals on nanopatterned au structures |
| topic | copper sulfide (CuS) nanocrystals interference-enhanced Raman spectroscopy phonons surface-enhanced Raman spectroscopy |
| url | https://doi.org/10.3762/bjnano.6.77 |
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