Browsing by Author "Leu, Jihperng (Jim)"

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Effect of Bridging and Terminal Alkyl Groups on Structural and Mechanical Properties of Porous Organosilicate Films
(2017-01-01)
Nenashev, R.
;
Wang, Yingjie
;
Liu, Chunhui
;
Kotova, N.
;
Vorotilov, K.
Chemical composition, pore structure and mechanical properties of porous organosilicate low-k films with terminal and bridging organic groups are studied. It is shown that BTMSE based low-k films with alkyl bridge between the Si atoms have non-uniform pore structure with internal voids (ink-bottle like pores) while the films with terminal alkyl groups have pores with cylindrical shape. All studied spin-on deposited films have better mechanical properties than PECVD films with similar chemical composition and porosity. The best mechanical properties showed alkyl bridged low-k films. Moreover, the Young's modulus increases with BTMSE content because of higher concentration of bridging bonds. (c) The Author(s) 2017. Published by ECS. All rights reserved.