Influence of the molecular structure of copper phthalocyanines on their ordering in thin films and photoluminescence and absorption spectra
| Autor: | A. G. Kolos’ko, A. V. Ziminov, E. I. Terukov, A. V. Fenukhin, S. M. Ramsh, T. A. Yurre, V. L. Berkovits, V. P. Ulin, Jean-Paul Kleider, A. G. Kazanskiĭ |
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| Rok vydání: | 2007 |
| Předmět: |
Photoluminescence
Materials science Absorption spectroscopy business.industry Band gap Photoconductivity chemistry.chemical_element Condensed Matter Physics Copper Electronic Optical and Magnetic Materials Crystallography chemistry Optoelectronics Absorption (chemistry) Thin film business Luminescence |
| Zdroj: | Physics of the Solid State. 49:272-277 |
| ISSN: | 1090-6460 1063-7834 |
| DOI: | 10.1134/s1063783407020151 |
| Popis: | Thin films consisting of copper phthalocyanine (CuPc) molecules and copper phthalocyanine molecular complexes with different structures on glass and glass-ceramic substrates are studied using reflectance anisotropy, photoluminescence, and photoconductivity (constant photocurrent method) spectroscopies. It is established that, in the studied films, the CuPc molecules and CuPc molecules containing peripheral phthalimide substituents are located in planes virtually parallel to the surface of the substrate. In thin films consisting of μ-peroxo dimer complexes, the angle between the CuPc molecular planes and the surface of the substrate is close to 90°. The thin films formed by CuPc molecules containing peripheral phthalimide substituents are characterized by the highest luminescence intensity in the range of ∼ 1.12 eV and the lowest absorption intensity in the range of energies less than the band gap. These properties are explained by the lower concentration of non-radiative recombination centers in the film. |
| Databáze: | OpenAIRE |
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