First synthesis of silicon nanocrystals in amorphous silicon nitride from a preceramic polymer
We report the first synthesis of silicon nanocrystals embedded in a silicon nitride matrix through a direct pyrolysis of a preceramic polymer (perhydropolysilazane). Structural analysis carried out by XRD, XPS, Raman and TEM reveals the formation of silicon quantum dots and correlates the microstruc...
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| Veröffentlicht in: | Nanotechnology 2019-06, Vol.30 (25), p.255601-255601 |
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| container_issue | 25 |
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| container_title | Nanotechnology |
| container_volume | 30 |
| creator | Biesuz, M Bettotti, P Signorini, S Bortolotti, M Campostrini, R Bahri, M Ersen, O Speranza, G Lale, A Bernard, S Sorarù, G D |
| description | We report the first synthesis of silicon nanocrystals embedded in a silicon nitride matrix through a direct pyrolysis of a preceramic polymer (perhydropolysilazane). Structural analysis carried out by XRD, XPS, Raman and TEM reveals the formation of silicon quantum dots and correlates the microstructures with the annealing temperature. The photoluminescence of the nanocomposites was investigated by both linear and nonlinear measurements. Furthermore we demonstrate an enhanced chemical resistance of the nitride matrix, compared to the typical oxide one, in both strongly acidic and basic environments. The proposed synthesis via polymer pyrolysis is a striking innovation potentially allowing a mass-scale production nitride embedded Si nanocrystals. |
| doi_str_mv | 10.1088/1361-6528/ab0cc8 |
| format | Article |
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Structural analysis carried out by XRD, XPS, Raman and TEM reveals the formation of silicon quantum dots and correlates the microstructures with the annealing temperature. The photoluminescence of the nanocomposites was investigated by both linear and nonlinear measurements. Furthermore we demonstrate an enhanced chemical resistance of the nitride matrix, compared to the typical oxide one, in both strongly acidic and basic environments. 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| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link |
| subjects | Chemical Sciences Engineering Sciences Material chemistry Materials photoluminescence polymer pyrolysis Si nanodots silicon nitride |
| title | First synthesis of silicon nanocrystals in amorphous silicon nitride from a preceramic polymer |
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