Characteristics and durability of fluoropolymer thin films

被引:8
作者
Cheneler, David [2 ]
Bowen, James [1 ]
Evans, Stephen D. [3 ]
Gorzny, Marcin [3 ]
Adams, Michael J. [1 ]
Ward, Michael C. L. [2 ]
机构
[1] Univ Birmingham, Dept Chem Engn, Birmingham B15 2TT, W Midlands, England
[2] Univ Birmingham, Dept Mech Engn, Birmingham B15 2TT, W Midlands, England
[3] Univ Leeds, Dept Phys & Astron, Leeds LS2 9JT, W Yorkshire, England
基金
英国工程与自然科学研究理事会;
关键词
Fluoropolymer; Atomic force microscopy; X-ray photoelectron spectroscopy; Wetting; Etchant; pH; PLASMA COPOLYMERIZATION; CHEMICAL-STRUCTURE; GROWTH; OCTAFLUOROCYCLOBUTANE; TMAH;
D O I
10.1016/j.polymdegradstab.2010.12.022
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The use of plasma-polymerised fluoropolymer (CFxOy) thin films in the manufacture of micro-electromechanical systems (MEMS) devices is well-established, being employed in the passivation step of the deep reactive ion etching (DRIE) process, for example. This paper presents an investigation of the effect of exposure to organic and aqueous liquid media on plasma-polymerised CFxOy thin films. Atomic force microscopy (AFM), scanning electron microscopy (SEM), ellipsometry, X-ray photoelectron spectroscopy (XPS) and dynamic wetting measurements were all employed as characterisation techniques. Highly basic aqueous solutions, including known silicon etchants, were found to cause delamination via degradation of the countersurface below the CFxOy thin film. Films were found to be stable in organic solvents, acidic aqueous solutions and slightly basic aqueous solutions. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码:561 / 565
页数:5
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