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- W1979309622 abstract "We have investigated the influence of the growth parameters (substrate temperature and deposition rate) and the aging process on the optical properties of C70 thin films, by means of absorption and photoluminescence spectra. The Urbach energy, obtained from the absorption spectra, indicates that the substrate temperature influences the film optical properties more than the deposition rate. The luminescence spectra suggest the important role of the disorder in the radiative efficiency. The main structures of the emission spectra have been assigned to an intramolecular polaron–exciton. The analysis of the temperature dependence of the photoluminescence spectra of the as-deposited samples shows that the vibronic transitions are dominant at low temperature, whereas the singlet purely electronic recombination (due to Frenkel-type exciton) is visible at a sufficiently high temperature. On the contrary, in the aged samples this purely electronic transition is well resolved from low to high temperature. This anomalous behaviour is discussed and attributed to the disorder introduced in the film." @default.
- W1979309622 created "2016-06-24" @default.
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- W1979309622 date "2007-06-01" @default.
- W1979309622 modified "2023-09-24" @default.
- W1979309622 title "Role of the deposition parameters and aging on the optical and photoluminescence properties of C70 films" @default.
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- W1979309622 doi "https://doi.org/10.1016/j.tsf.2007.02.086" @default.
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