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Silicon nanocrystal...
Silicon nanocrystals on amorphous silicon carbide alloy thin films : Control of film properties and nanocrystals growth
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- Barbe, Jeremy (författare)
- CEA, Liten, Grenoble, och Université de Toulouse, UPS, INPT, LAPLACE, Frankrike
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- Xie, Ling (författare)
- Uppsala universitet,Tillämpad materialvetenskap
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- Leifer, Klaus (författare)
- Uppsala universitet,Tillämpad materialvetenskap
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- Faucherand, Pascal (författare)
- CEA, Liten, Grenoble, Frankrike
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- Morin, Christine (författare)
- CEA, Liten, Grenoble Frankrike
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- Rapisarda, Dario (författare)
- CEA, Liten, Grenoble, Frankrike
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- De Vito, Eric (författare)
- CEA, Liten, Grenoble, Frankrike
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- Makasheva, Kremena (författare)
- Université de Toulouse, UPS, INPT, LAPLACE, Frankrike
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- Despax, Bernard (författare)
- Université de Toulouse, UPS, INPT, LAPLACE, Frankrike
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- Perraud, Simon (författare)
- CEA, Liten, Grenoble, Frankrike
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(creator_code:org_t)
- Elsevier, 2012
- 2012
- Engelska.
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Ingår i: Thin Solid Films. - : Elsevier. - 0040-6090 .- 1879-2731. ; 522, s. 136-144
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The present study demonstrates the growth of silicon nanocrystals on amorphous silicon carbide alloy thin films. Amorphous silicon carbide films [a-Si1 − xCx:H (with x < 0.3)] were obtained by plasma enhanced chemical vapor deposition from a mixture of silane and methane diluted in hydrogen. The effect of varying the precursor gas-flow ratio on the film properties was investigated. In particular, a wide optical band gap (2.3 eV) was reached by using a high methane-to-silane flow ratio during the deposition of the a-Si1 − xCx:H layer. The effect of short-time annealing at 700 °C on the composition and properties of the layer was studied by X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. It was observed that the silicon-to-carbon ratio in the layer remains unchanged after short-time annealing, but the reorganization of the film due to a large dehydrogenation leads to a higher density of SiC bonds. Moreover, the film remains amorphous after the performed short-time annealing. In a second part, it was shown that a high density (1 × 1012 cm− 2) of silicon nanocrystals can be grown by low pressure chemical vapor deposition on a-Si0.8C0.2 surfaces at 700 °C, from silane diluted in hydrogen. The influence of growth time and silane partial pressure on nanocrystals size and density was studied. It was also found that amorphous silicon carbide surfaces enhance silicon nanocrystal nucleation with respect to SiO2, due to the differences in surface chemical properties.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
Nyckelord
- Silicon nanocrystal
- silicon carbide
- thin film
- Teknisk fysik med inriktning mot materialvetenskap
- Engineering Science with specialization in Materials Science
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Barbe, Jeremy
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Xie, Ling
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Leifer, Klaus
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Faucherand, Pasc ...
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Morin, Christine
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Rapisarda, Dario
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visa fler...
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De Vito, Eric
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Makasheva, Kreme ...
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Despax, Bernard
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Perraud, Simon
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visa färre...
- Om ämnet
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Materialteknik
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och Annan materialte ...
- Artiklar i publikationen
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Thin Solid Films
- Av lärosätet
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Uppsala universitet