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Appl. Sci. 2017, 7(1), 56; doi:10.3390/app7010056

Impact on the Gas Barrier Property of Silicon Oxide Films Prepared by Tetramethylsilane-Based PECVD Incorporating with Ammonia

1
Institute of Electro-Optical and Materials Science, National Formosa University, Yunlin 63201, Taiwan
2
Industrial Technology Research Institute, Liujia, Tainan 734, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editors: Stephen D. Prior and Gianfranco Pacchioni
Received: 27 October 2016 / Revised: 13 December 2016 / Accepted: 28 December 2016 / Published: 5 January 2017
View Full-Text   |   Download PDF [3149 KB, uploaded 5 January 2017]   |  

Abstract

The gas barrier property of a silicon oxide (SiOx) film synthesized from plasma-enhanced chemical vapor deposition using the tetramethysilane (TMS)-oxygen gas mixture was modified by introducing ammonia gas in the glow discharge. The change in the glow discharge with the ammonia gas incorporation was monitored by an optical emission spectrometer (OES). Structures, chemical bond configurations, and material properties of the resulting films were investigated. The introduced ammonia gas in the TMS-oxygen plasma resulted in emission lines dominated by the N2 and CN species with the suppression of the OH and oxygen-related radicals, thereby introducing nitrogen and carbon atoms in the deposited film. A silicon oxynitride (SiOxNy) film had the best surface morphology and the lowest residual internal stress was achievable by controlling the reactant gas flow ratio of the ammonia and oxygen. The barrier property to the water vapor permeation of the silicon oxide film (~1.65 g/m2/day) deposited onto the polyethylene terephthalate (PET) substrate was thus greatly improved to 0.06 g/m2/day for the film synthesized from an adequate TMS-oxygen-ammonia gas mixture. View Full-Text
Keywords: silicon oxide; gas barrier; optical emission spectrometer; silicon oxynitride; TMS-oxygen-ammonia gas mixture silicon oxide; gas barrier; optical emission spectrometer; silicon oxynitride; TMS-oxygen-ammonia gas mixture
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Liu, H.-W.; Chen, T.-H.; Chang, C.-H.; Lu, S.-K.; Lin, Y.-C.; Liu, D.-S. Impact on the Gas Barrier Property of Silicon Oxide Films Prepared by Tetramethylsilane-Based PECVD Incorporating with Ammonia. Appl. Sci. 2017, 7, 56.

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