Abstract
Hydrogenated amorphous carbon-sulfur alloy thin films were grown by capacitively coupled radio frequency glow discharge decomposition of (CH4He) and (H2SHe) gas mixtures. Raman and infrared spectroscopies were used to probe the structure of the material. The Raman spectrum has two bands at 1360 and 1550 cm−1 ascribed to sp2 clusters. The stretching modes of the C-H bond appear as a broad band in the 2700 to 3200 cm−1 region. In addition, both IR and Raman spectra have a pronounced band at 670 cm−1, which is attributed to a C-S vibrational mode. The energy gap, (E04) ∼ 1.6 eV, is determined by photothermal deflection spectroscopy. The photoluminescence spectrum reveals a single band centered at about 1.3 eV. Gas evolution spectra are analyzed and interpreted in terms of structural features.
Published Version
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