The fabrication and characterization of benzocyclobutene (BCB 4022-35) polymer thin films by spin coating method

The rapid, radical and qualified changes in electronic communication industry pay a critical role in investigation of the properties of polymer. Understanding properties of polymer films has been necessary for the successful using of soft materials in technological applications. In this thesis, Benzocyclobutene (BCB 4022-35) polymer thin films that have high transparency, easy workability, high physical, chemical, mechanical, thermal stability and adjustable refractive index were fabricated by spin coating technique. The final thicknesses and refractive indices for various coating speeds and curing times were characterized by Prism Coupling System and profilometer. The final thicknesses of BCB thin films were changed from 2.60 to 5.22 ? m. The refractive indices of BCB thin film at 632.8 nm and 1553 nm was 1.5845 and 1.5606 respectively. In addition, the extent of curing for BCB thin films was determined by FTIR spectrometry. As a result of this thesis, the basic features of BCB thin films were high accuracy determined. The BCB thin films that fabricated high quality are a suitable material for optical applications. This knowledge allows the fabrication of optical waveguides.