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By employing the in-situ Fourier transform infrared (FTIR) spectroscopy and curve-fitting, we studied the evolution in the ordering of vacuum-deposited pentacene films. In the FTIR spectra, the thin film and bulk phases appeared at 903.2 cm−1 and 907.2 cm−1, respectively. The misoriented phase was also observed at 904.4 cm−1. The position and the intensity of each phase varied with the film thickness...
We have studied the morphology and optical properties of pentacene films in the thickness range of 300–600nm using atomic force microscopy and spectroscopic ellipsometry. The films were grown on native SiO 2 and glass substrates at room temperature and 80°C. Surface images showed that the films were formed by the grain growth. The grains were bigger when the films were grown at 80°C, but this...
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