Instability and Dewetting of Conducting-Insulating Polymer Thin-Film Bilayers

✍ Scribed by Santanu Chattopadhyay; J. Carson Meredith

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 178 KB
• Volume: 25
• Category: Article
• ISSN: 1022-1336
• DOI: 10.1002/marc.200300150

✦ Synopsis

Abstract

Communication: Combinatorial thickness‐gradient libraries are used to explore stability and dewetting in thin bilayers of polystyrene (PS) on poly(3‐octylthiophene) (P3OT) on Si. At low P3OT thicknesses (90–175 nm), P3OT screens the unfavorable van der Waals (VDW) interactions between PS and Si, and the instability onset thickness of PS is depressed from 56 to 23 nm. A dramatic and unexpected transition to a VDW‐unstable interface is discovered at P3OT thicknesses above 175 nm.

A digital image of a representative bilayer library.

magnified imageA digital image of a representative bilayer library.