Growth and characterization of thin films prepared from perfluoro-isopropyl-substituted perfluorophthalocyanines

• Published in: Thin solid films 2009-06, Vol.517 (15), p.4379-4384
• Main Authors: Keil, C., Tsaryova, O., Lapok, L., Himcinschi, C., Wöhrle, D., Hild, O.R., Zahn, D.R.T., Gorun, S.M., Schlettwein, D.
• Format: Article
• Language: English
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Conductivity; Cross-disciplinary physics: materials science; rheology; Electrical properties of specific thin films; Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures; Ellipsometry; Exact sciences and technology; Growth mechanism; Materials science; Methods of deposition of films and coatings; film growth and epitaxy; Optical spectroscopy; Organic semiconductors; Physical vapor deposition; Physics; Surface and interface electron states; Theory and models of film growth; Vapor phase epitaxy; growth from vapor phase
• ISSN: 0040-6090; 1879-2731
• DOI: 10.1016/j.tsf.2009.01.070

Vapor deposition of perfluorinated phthalocyanines with bulky perfluorpropyl groups (F 64Pc) yielded intensely colored thin films (20–100 nm) despite the large molecular weight. In situ electrical conduction and optical transmission measurements revealed an almost negligible extent of intermolecular electronic coupling. Such quasi-independent character of molecules in solids was confirmed by detailed spectroscopic ellipsometry. The influence of the bulky peripheral groups on the packing in the films and on the electronic and optical properties of the films as well as potential applications of this class of strong electron acceptors are discussed.