Deposition of ordered phthalocyanine films by spin coating

Abstract

Thin films of octaalkyl-substituted phthalocyanines were prepared by spin coating. The films were remarkably smooth and showed optical absorption spectra with Davydov splitting, characteristic of crystalline order, similar to those of structurally related compounds prepared by the Langmuir–Blodgett technique. The crystallinity was confirmed by X-ray diffraction. The technique may have advantages for device fabrication.