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Dewetting Behavior of PS-ZnO Thin Film Coated on Ultrathin Au Layer Grown on Si Substrate
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Document Title
Dewetting Behavior of PS-ZnO Thin Film Coated on Ultrathin Au Layer Grown on Si Substrate
Author
Pangpaiboon N. Kotpech W. Ketkaew T. Arthibenyakul B. Klaewklar N. Chanprasopchai V. Sutthi C. Lapawae K. Sinthiptharakoon K.
Affiliations
Department of Industrial Physics and Medical Instrumentation Faculty of Applied Science King Mongkut抯 University of Technology North Bangkok Bangkok Thailand; Samsen Wittayalai School Bangkok Thailand; National Nanotechnology Center (NANOTEC) National Science and Technology Development Agency (NSTDA) Phathum Thani Thailand
Type
Article
Source Title
Current Applied Science and Technology
ISSN
25869396
Year
2023
Volume
23
Issue
6
Open Access
All Open Access Bronze
Publisher
King Mongkut s Institute of Technology Ladkrabang
DOI
10.55003/cast.2023.06.23.005
Abstract
Electronic packaging by coating device component surfaces with polymer thin film is an important step to protect the components from harsh environments. However along with the device miniaturization to improve its performance scaling down the coating film can cause a decrease in film durability. Therefore the thermal stability of pure polystyrene (PS) and zinc oxide-incorporated polystyrene (PS-ZnO) nano-thin films coated on gold (Au) layer with different nano thicknesses on Si substrate were examined to determine the smallest Au thickness at which the polymer films would exhibit optimal stability and to investigate the effects of the Au component on film resistance to thermal dewetting. With the requirement of having a transparent and conductive Au electrode the thickness of 20 nm was identified as the optimal value for the Au layer on which both the PS and PS-ZnO films could withstand environment temperatures at 150oC for up to a few hours while the PS-ZnO film exhibited outstanding thermal stability for over 10 days. Such excellent durability was ascribed to the physio-chemical framework in which the coating film can experience forces from the coated layers which potentially affect the mobility of polymer chains. Considering the increase of Au content and Au film roughness with increasing Au film thickness and realizing the similar surface adhesion forces of these Au layers several possible influences of the Au material on the stability of PS matrix were discussed. The findings provide an insight into heat-resistant coatings for nano-thin Au layers grown on Si which may also be of benefit in the design and understanding of relevant electronic protection and functional polymeric coatings. ? 2023 King Mongkut s Institute of Technology Ladkrabang. All rights reserved.
Industrial Classification
Knowledge Taxonomy Level 1
Knowledge Taxonomy Level 2
Knowledge Taxonomy Level 3
License
CC BY-NC-ND
Rights
Authors