Low thermal emissive surface properties of ZnO/polyimide composites prepared by pulsed laser deposition

TitleLow thermal emissive surface properties of ZnO/polyimide composites prepared by pulsed laser deposition
Publication TypeJournal Article
Year of Publication2011
AuthorsBabrekar, HA, Jejurikar, SM, Jog, JPrakash, Adhi, KP, Bhoraskar, SV
JournalApplied Surface Science
Volume257
Issue6
Pagination1824-1828
Date PublishedJAN
ISSN0169-4332
Keywordspulsed laser deposition, Thermal emissivity, Thin films, Zinc oxide
Abstract

We report the low thermal-emissive surface properties of composites of ZnO-polyimide. The composites were synthesized by depositing ZnO on polyimide surface by pulsed laser deposition technique. ZnO target was ablated at different incident energy densities and the substrate (polyimide) was held at elevated temperature. This facilitated the c-axis oriented growth of ZnO, which was inferred from the X-ray diffraction analysis. The composites consisted of multilayers having different electrical resistivities. The values of which are also estimated from Hagen-Rubens relation. The reduced infrared emissivities of the composite films, as compared to polyimide, were correlated to the increased carrier concentration and reduced surface resistivity estimated from the Hall measurements. (C) 2010 Elsevier B.V. All rights reserved.

DOI10.1016/j.apsusc.2010.08.083
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)2.46
Divison category: 
Polymer Science & Engineering