Luminescence study of amorphous hydrogenated carbon grown with varying self-bias voltagesSolid State Communications (1992)
As a function of increasing self-bias voltage across the plasma, the following changes are observed in the grown amorphous hydrogenated carbon thin films: the photoluminescence intensity decreases while the peak position shifts only silightly to lower energy; the optical bandgap decreases; the hydrogen concentration decreases; and the carbon dangling bond electron spin resonance signal increases. We explain all these trends in terms of increased number of electron collisions in the plasma that break more carbon-hydrogen bonds in precursor ions and molecules, leading to larger clusters of graphite-like cores coated with hydrogen in the grown films.
Publication DateApril 1, 1992
Citation InformationJeremy Viehland, S. Lin, Bernard J. Feldman, Kimberly Kilgore, et al.. "Luminescence study of amorphous hydrogenated carbon grown with varying self-bias voltages" Solid State Communications Vol. 82 Iss. 2 (1992) p. 79 - 81
Available at: http://works.bepress.com/bernard-feldman/49/