Vibrational and morphological properties of Sn-doped CdS films deposited by ultrasonic spray pyrolysis method |
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Authors: | Tülay Özer Sabiha Aksay Salih Kose |
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Affiliation: | 1. Department of Physics, Anadolu University, TR-26470 Eski?ehir, Turkey;2. Department of Physics, Eski?ehir Osmangazi University, TR-26480 Eski?ehir, Turkey |
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Abstract: | Cd1?xSnxS films (x=0.0, 0.1 and 0.2) were prepared by the ultrasonic spray pyrolysis (USP) method on the glass substrate at 300 °C. Effect of Sn doping on the vibrational and morphological properties of CdS films has been investigated by scanning electron microscopy (SEM), atomic force microscopy (AFM), FT-IR and Raman spectroscopy. The SEM and AFM measurements showed that the surface morphology of the films was affected by the tin incorporation. The Raman (200–700 cm?1) and FT-IR (400–4000 cm?1) spectra of Cd1?xSnxS were recorded. The Raman spectrum for Cd1?xSnxS films is dominated by an intense band at 300 cm?1, assigned to the first-order longitudinal optic phonon and the second-order phonon peak 599 cm?1. The absorption peaks in the FT-IR spectra of Cd1?xSnxS located at 540–700 and 1004–1045 cm?1 can be assigned to the Cd–S and C–O stretching frequencies, respectively. Raman and FT-IR spectra shows decrease in the peak intensity with increasing Sn concentration. |
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