Abstract
Abstract Photochemical surface modification of polycrystalline diamond films was achieved. Clean, hydrogen-terminated diamond films were chlorinated by UV irradiation in Cl 2 (g). Amine-terminated diamond films were produced by irradiating the chlorinated diamond films in NH 3 (g). The modified surfaces were characterized by X-ray photoelectron spectroscopy and diffuse-reflectance Fourier transform infrared spectroscopy. The results of current-voltage ( I-V ) measurements indicated that surface modification by chlorine affected the ohmic nature of the gold-diamond contact, the contact resistance and the diamond surface conductivity.
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