Spectral-Luminescent Properties of Deposited Rhodamine 6G Films |
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Authors: | V. V. Bryukhanov S. A. Elistratova V. C. Laurinas |
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Affiliation: | (1) Kaliningrad State Technical University, 1 Sovetskii Ave., Kaliningrad, 236000, Russia;(2) E. A. Buketov Karaganda State University, Karaganda, Kazakhstan |
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Abstract: | We have investigated the absorption and fluorescence spectra of Rhodamine 6G thin (20–100 nm) films vacuum-deposited on solid dielectric substrates: quartz and borosilicate glasses and polymer films. By the absorption spectra several molecular absorption centers — monomers, dimers, and complex associates — have been revealed. For the first time luminescence of vacuum-deposited Rhodamine 6G films has been obtained and investigated. We classified it as fluorescence of plane dimers and dimers of the house-of-cards type and also as luminescence of complex associates. The dependence of the spectral composition of the films on the excitation wavelength in the 293–353 K temperature range has been studied. It has been proposed that amorphous Rhodamine 6G films obtained by the vacuum deposition method contain crystalline zones and microclusters of adsorbed water molecules. |
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Keywords: | vacuum deposition film dimer quenching electron energy migration luminescence phosphorescence fluorescence complex associates |
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