Title

Orientation studies of Si-phthalocyanine sulfonic acids cast on SiOx substrates

Document Type

Article

Publication Date

2-1-2003

Abstract

Layers of dihydroxy silicon phthalocyanine tetrasulfonic acid and oligo-μ-oxo silicon phthalocyanine tetrasulfonic acid were prepared by solution-casting methods. The purity of the material was checked by X-ray photoemission spectroscopy. The orientation of the molecules in respect to the substrate plane was investigated by angle-dependent near-edge X-ray absorption fine-structure spectroscopy. The morphology was characterized by atomic force microscopy. Most samples exhibited a significant orientation that was accompanied by crystalline structures; others had no orientation at all with a dominant amorphous morphology. This behavior indicates that several preparation parameters affect the crystallinity and the orientation of the phthalocyanines.

Publication Source (Journal or Book title)

Applied Physics A: Materials Science and Processing

First Page

177

Last Page

182

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