Structural and Photoelectron Emission Properties of Chemical Vapor Deposition Grown Diamond Films

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The effects of methane (CH4), diborone (B2H6) and nitrogen (N2) concentrations on the structure and photoelectron emission properties of chemical vapor deposition (CVD) polycrystalline diamond films were studied. The diamond films were grown on single-crystal Si substrates using the hot-tungsten filament CVD technique. Raman spectroscopy and x-ray photoelectron spectroscopy (XPS) were used to characterize the different forms of carbon in the films, and the fraction of sp3 carbon to sp3 plus sp2 carbon at the surface of the films, respectively. Scanning electron microscopy (SEM) was used to characterize the surface morphology of the films. The photoelectron emission properties were determined ... continued below

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x, 158 leaves : ill.

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Akwani, Ikerionwu Asiegbu August 1998.

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  • Akwani, Ikerionwu Asiegbu

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The effects of methane (CH4), diborone (B2H6) and nitrogen (N2) concentrations on the structure and photoelectron emission properties of chemical vapor deposition (CVD) polycrystalline diamond films were studied. The diamond films were grown on single-crystal Si substrates using the hot-tungsten filament CVD technique. Raman spectroscopy and x-ray photoelectron spectroscopy (XPS) were used to characterize the different forms of carbon in the films, and the fraction of sp3 carbon to sp3 plus sp2 carbon at the surface of the films, respectively. Scanning electron microscopy (SEM) was used to characterize the surface morphology of the films. The photoelectron emission properties were determined by measuring the energy distributions of photoemitted electrons using ultraviolet photoelectron spectroscopy (UPS), and by measuring the photoelectric current as a function of incident photon energy.

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x, 158 leaves : ill.

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  • August 1998

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Akwani, Ikerionwu Asiegbu. Structural and Photoelectron Emission Properties of Chemical Vapor Deposition Grown Diamond Films, dissertation, August 1998; Denton, Texas. (digital.library.unt.edu/ark:/67531/metadc279053/: accessed July 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .