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- W1980600309 abstract "Abstract Unhydrogenated amorphous carbon (a-C) films were prepared by a laser beam technique. Optical absorption, photoluminescence (PL) and the dependence of PL spectra on the incident laser intensity were studied. The optical gap, peak energy of the PL spectrum and band tail width change with preparation bias voltage. At room temperature PL spectra exhibit a superlinear behaviour at lower incident intensity, linear behaviour at higher intensities, and a large blue shift of peak energy with increasing excitation intensity. These results can be qualitatively explained in the light of the distribution of gap states and tail state population." @default.
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- W1980600309 date "1993-04-01" @default.
- W1980600309 modified "2023-09-27" @default.
- W1980600309 title "Optical absorption and photoluminescence of unhydrogenated amorphous carbon films" @default.
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- W1980600309 doi "https://doi.org/10.1016/0040-6090(93)90212-8" @default.
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