Size Dependence of the Band Gap of Core–Shell Tantalum and Tantalum Oxide (V) Nanoclusters
Monodisperse films of spherical tantalum oxide (V) nanoclusters and spherical tantalum nanoclusters with a tantalum oxide shell with diameters of 1.4–8 nm were obtained by magnetron sputtering. The size of the deposited nanoclusters was controlled using a quadrupole mass filter. The chemical composi...
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2024-12-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/15/1/14 |
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| author | Valentin A. Shilov Petr V. Borisyuk Diana V. Bortko Smagul Karazhanov Yuri Y. Lebedinskii Oleg S. Vasilyev |
| author_facet | Valentin A. Shilov Petr V. Borisyuk Diana V. Bortko Smagul Karazhanov Yuri Y. Lebedinskii Oleg S. Vasilyev |
| author_sort | Valentin A. Shilov |
| collection | DOAJ |
| description | Monodisperse films of spherical tantalum oxide (V) nanoclusters and spherical tantalum nanoclusters with a tantalum oxide shell with diameters of 1.4–8 nm were obtained by magnetron sputtering. The size of the deposited nanoclusters was controlled using a quadrupole mass filter. The chemical composition was certified using the XPS method. Using the Reflected Electron Energy Loss Spectroscopy (REELS), the dependence of the band gap width on the nanocluster size was determined. It was found that starting from a certain nanocluster size, the band gap width increases as the nanocluster size decreases. Based on experimental data and a theoretical model, the effective mass of electrons dependence as a function of nanocluster size was obtained. |
| format | Article |
| id | doaj-art-85cb6cda612e4f6eb10bd57e7c664647 |
| institution | Kabale University |
| issn | 2079-4991 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj-art-85cb6cda612e4f6eb10bd57e7c6646472025-01-10T13:19:15ZengMDPI AGNanomaterials2079-49912024-12-011511410.3390/nano15010014Size Dependence of the Band Gap of Core–Shell Tantalum and Tantalum Oxide (V) NanoclustersValentin A. Shilov0Petr V. Borisyuk1Diana V. Bortko2Smagul Karazhanov3Yuri Y. Lebedinskii4Oleg S. Vasilyev5Department No. 78 Physical and Technical Problems of Metrology, National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, RussiaDepartment No. 78 Physical and Technical Problems of Metrology, National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, RussiaDepartment No. 78 Physical and Technical Problems of Metrology, National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, RussiaDepartment for Solar Energy Materials and Technologies, Institute for Energy Technology, 2027 Kjeller, NorwayDepartment No. 78 Physical and Technical Problems of Metrology, National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, RussiaDepartment No. 78 Physical and Technical Problems of Metrology, National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, RussiaMonodisperse films of spherical tantalum oxide (V) nanoclusters and spherical tantalum nanoclusters with a tantalum oxide shell with diameters of 1.4–8 nm were obtained by magnetron sputtering. The size of the deposited nanoclusters was controlled using a quadrupole mass filter. The chemical composition was certified using the XPS method. Using the Reflected Electron Energy Loss Spectroscopy (REELS), the dependence of the band gap width on the nanocluster size was determined. It was found that starting from a certain nanocluster size, the band gap width increases as the nanocluster size decreases. Based on experimental data and a theoretical model, the effective mass of electrons dependence as a function of nanocluster size was obtained.https://www.mdpi.com/2079-4991/15/1/14nanoclustersnanoparticlestantalumtantalum oxideband gapquadrupole mass filter |
| spellingShingle | Valentin A. Shilov Petr V. Borisyuk Diana V. Bortko Smagul Karazhanov Yuri Y. Lebedinskii Oleg S. Vasilyev Size Dependence of the Band Gap of Core–Shell Tantalum and Tantalum Oxide (V) Nanoclusters Nanomaterials nanoclusters nanoparticles tantalum tantalum oxide band gap quadrupole mass filter |
| title | Size Dependence of the Band Gap of Core–Shell Tantalum and Tantalum Oxide (V) Nanoclusters |
| title_full | Size Dependence of the Band Gap of Core–Shell Tantalum and Tantalum Oxide (V) Nanoclusters |
| title_fullStr | Size Dependence of the Band Gap of Core–Shell Tantalum and Tantalum Oxide (V) Nanoclusters |
| title_full_unstemmed | Size Dependence of the Band Gap of Core–Shell Tantalum and Tantalum Oxide (V) Nanoclusters |
| title_short | Size Dependence of the Band Gap of Core–Shell Tantalum and Tantalum Oxide (V) Nanoclusters |
| title_sort | size dependence of the band gap of core shell tantalum and tantalum oxide v nanoclusters |
| topic | nanoclusters nanoparticles tantalum tantalum oxide band gap quadrupole mass filter |
| url | https://www.mdpi.com/2079-4991/15/1/14 |
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