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http://dx.doi.org/10.5762/KAIS.2010.11.11.4468

Relationship between Dielectric Constant and Increament of Si-O bond in SiOC Film  

Oh, Teresa (Division of Semiconductor Design, Cheongju University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.11, no.11, 2010 , pp. 4468-4472 More about this Journal
Abstract
SiOC films made by the inductively coupled plasma chemical vapor deposition were researched the relationship between the dielectric constant and the chemical shift. SiOC film obtained by plasma method had the main Si-O-C bond with the molecule vibration mode in the range of $930{\sim}1230\;cm^{-1}$ which consists of C-O and Si-O bonds related to the cross link formation according to the dissociation and recombination. The C-O bond originated from the elongation effect by the neighboring highly electron negative oxygen atoms at terminal C-H bond in Si-$CH_3$ of $1270cm^{-1}$. However, the Si-O bond was formed from the second ionic sites recombined after the dissociation of Si-$CH_3$ of $1270cm^{-1}$. The increase of the Si-O bond induced the redshift as the shift of peak in FTIR spectra because of the increase of right shoulder in main bond. These results mean that SiOC films become more stable and stronger than SiOC film with dominant C-O bond. So it was researched that the roughness was also decreased due to the high degree of amorphous structure at SiOC film with the redshift after annealing.
Keywords
SiOC film; Polarization; Blueshift; Hardness; Dielectric constant;
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