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Chemical, optical, vibrational and luminescent properties of hydrogenated silicon-rich oxynitride films |
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| Authors: | Sandeep Kohli Jeremy A. Theil Richard K. Ahrenkiel Peter K. Dorhout |
| Affiliation: | a Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA b Agilent Technologies, MS 51L-GW, 5301 Stevens Creek Boulevard, Santa Clara, CA 95051, USA c Measurements and Characterization Division, National Renewable Energy Laboratory, 1617 Cole Boulevard, Golden, CO 80401, USA |
| Abstract: | X-ray photoelectron spectroscopy, spectroscopic ellipsometry, Fourier transform infrared and room temperature photoluminescence spectroscopy has been used to investigate the chemical, optical, vibrational and luminescent properties of Plasma Enhanced Chemical Vapor Deposited SiOxNy/H (0.17≤x≤0.96; 0.07≤y≤0.27), hydrogenated silicon-rich oxynitride (SRON). The linear dependence of the refractive index of the SRON films on the O/Si ratio was established. The photoluminescence from the SRON films were attributed to the embedded amorphous silicon clusters in the films. The dependence of luminescence maximum values on the O/Si and O/N ratios has been explored. We postulate that at O/Si ratio of 0.18 and an O/N ratio of 2.0 (SiO0.18N0.09) the film underwent a transformation from silicon-rich oxynitride to a-Si/H film with oxygen and nitrogen impurities. |
| Keywords: | 78.20.Ci 78.30.&minus jl 79.60.&minus i |
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