Spark Discharge Synthesis and Characterization of Ge/Sn Janus Nanoparticles
Germanium–tin nanoparticles are promising materials for near- and mid-infrared photonics thanks to their tunable optical properties and compatibility with silicon technology. This work proposes modifying the spark discharge method to produce Ge/Sn aerosol nanoparticles during the simultaneous erosio...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-05-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/10/1701 |
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| author | Anna A. Lizunova Vladislav I. Borisov Dana Malo Andrey G. Musaev Ekaterina I. Kameneva Alexey A. Efimov Ivan A. Volkov Arseny I. Buchnev Ivan A. Shuklov Victor V. Ivanov |
| author_facet | Anna A. Lizunova Vladislav I. Borisov Dana Malo Andrey G. Musaev Ekaterina I. Kameneva Alexey A. Efimov Ivan A. Volkov Arseny I. Buchnev Ivan A. Shuklov Victor V. Ivanov |
| author_sort | Anna A. Lizunova |
| collection | DOAJ |
| description | Germanium–tin nanoparticles are promising materials for near- and mid-infrared photonics thanks to their tunable optical properties and compatibility with silicon technology. This work proposes modifying the spark discharge method to produce Ge/Sn aerosol nanoparticles during the simultaneous erosion of germanium and tin electrodes. Since tin and germanium have a significant difference in the potential for electrical erosion, an electrical circuit damped for one period was developed to ensure the synthesis of Ge/Sn nanoparticles consisting of independent germanium and tin crystals of different sizes, with the ratio of the atomic fraction of tin to germanium varying from 0.08 ± 0.03 to 0.24 ± 0.07. We investigated the elemental and phase composition, size, morphology, and Raman and absorbance spectra of the nanoparticles synthesized under different inter-electrode gap voltages and the presence of additional thermal treatment directly in a gas flow at 750 °C. The research shows that the in-flow thermal treatment of aerosol-agglomerated nanoparticles produced special individual bicrystalline Janus Ge/Sn nanoparticles with an average size of 27 nm and a decreasing absorption function with a changing slope at 700 nm. |
| first_indexed | 2024-03-11T03:26:38Z |
| format | Article |
| id | doaj.art-a24a3caeba9c4e5998e627f555e73c3d |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-11T03:26:38Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-a24a3caeba9c4e5998e627f555e73c3d2023-11-18T02:43:31ZengMDPI AGNanomaterials2079-49912023-05-011310170110.3390/nano13101701Spark Discharge Synthesis and Characterization of Ge/Sn Janus NanoparticlesAnna A. Lizunova0Vladislav I. Borisov1Dana Malo2Andrey G. Musaev3Ekaterina I. Kameneva4Alexey A. Efimov5Ivan A. Volkov6Arseny I. Buchnev7Ivan A. Shuklov8Victor V. Ivanov9Moscow Institute of Physics and Technology, 141701 Dolgoprudny, RussiaMoscow Institute of Physics and Technology, 141701 Dolgoprudny, RussiaMoscow Institute of Physics and Technology, 141701 Dolgoprudny, RussiaMoscow Institute of Physics and Technology, 141701 Dolgoprudny, RussiaMoscow Institute of Physics and Technology, 141701 Dolgoprudny, RussiaMoscow Institute of Physics and Technology, 141701 Dolgoprudny, RussiaMoscow Institute of Physics and Technology, 141701 Dolgoprudny, RussiaMoscow Institute of Physics and Technology, 141701 Dolgoprudny, RussiaMoscow Institute of Physics and Technology, 141701 Dolgoprudny, RussiaMoscow Institute of Physics and Technology, 141701 Dolgoprudny, RussiaGermanium–tin nanoparticles are promising materials for near- and mid-infrared photonics thanks to their tunable optical properties and compatibility with silicon technology. This work proposes modifying the spark discharge method to produce Ge/Sn aerosol nanoparticles during the simultaneous erosion of germanium and tin electrodes. Since tin and germanium have a significant difference in the potential for electrical erosion, an electrical circuit damped for one period was developed to ensure the synthesis of Ge/Sn nanoparticles consisting of independent germanium and tin crystals of different sizes, with the ratio of the atomic fraction of tin to germanium varying from 0.08 ± 0.03 to 0.24 ± 0.07. We investigated the elemental and phase composition, size, morphology, and Raman and absorbance spectra of the nanoparticles synthesized under different inter-electrode gap voltages and the presence of additional thermal treatment directly in a gas flow at 750 °C. The research shows that the in-flow thermal treatment of aerosol-agglomerated nanoparticles produced special individual bicrystalline Janus Ge/Sn nanoparticles with an average size of 27 nm and a decreasing absorption function with a changing slope at 700 nm.https://www.mdpi.com/2079-4991/13/10/1701germanium–tin nanoparticlesspark discharge synthesisaerosolthermal treatmentabsorptionRaman spectroscopy |
| spellingShingle | Anna A. Lizunova Vladislav I. Borisov Dana Malo Andrey G. Musaev Ekaterina I. Kameneva Alexey A. Efimov Ivan A. Volkov Arseny I. Buchnev Ivan A. Shuklov Victor V. Ivanov Spark Discharge Synthesis and Characterization of Ge/Sn Janus Nanoparticles Nanomaterials germanium–tin nanoparticles spark discharge synthesis aerosol thermal treatment absorption Raman spectroscopy |
| title | Spark Discharge Synthesis and Characterization of Ge/Sn Janus Nanoparticles |
| title_full | Spark Discharge Synthesis and Characterization of Ge/Sn Janus Nanoparticles |
| title_fullStr | Spark Discharge Synthesis and Characterization of Ge/Sn Janus Nanoparticles |
| title_full_unstemmed | Spark Discharge Synthesis and Characterization of Ge/Sn Janus Nanoparticles |
| title_short | Spark Discharge Synthesis and Characterization of Ge/Sn Janus Nanoparticles |
| title_sort | spark discharge synthesis and characterization of ge sn janus nanoparticles |
| topic | germanium–tin nanoparticles spark discharge synthesis aerosol thermal treatment absorption Raman spectroscopy |
| url | https://www.mdpi.com/2079-4991/13/10/1701 |
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