Plasma-Assisted Chemical Vapor Deposition of Titanium Oxide Layer at Room-Temperature

• 作者: Hiromi Suzuki Risa Akutsu Satoshi Yamauchi
• 来源期刊: 结晶过程及技术期刊(英文)
• 学科: 化学
• 关键词: PCVD AMORPHOUS TITANIUM-OXIDE FTIR HYDROXYL HYDROPHILICITY
• 年，卷（期）: 2014,（1）
• 页码范围: 20-26
• 页数: 7页
• 分类号: O6

摘要

Plasma-assisted chemical vapor deposition (PCVD) at pressure as low as 3 mtorr using titanium-tetra-isopropoxide (TTIP) and oxygen mixed gas plasma generated by 13.56 MHz radio frequency power (RF-power) below 70 W were applied to deposit titanium-oxide layer at temperature under 40°C. Plasma optical emission spectroscopy and FTIR indicated that density of OH group in the amorphous layer was related to the density of OH or H2O in the plasma and the species was formed on electrode to induce the RF-power. Hydrophilicity on the layer was dependent on the density of chemisorbed OH, but was degraded by the excess OH. The PCVD-TiOx coating was demonstrated on polyethylene terephthalate and showed good hydrophilic property with the contact angle of water about 5°.