Patent ID: 8435597
Filing Date: 2013-05-07
Classification: C30B,G01J,H01L

Abstract:
1. A method of manufacturing a diamond UV sensor element using a diamond single crystal as a light receiving portion and detecting a light based on the change of electric resistance caused by a light irradiated to the light receiving portion, including; (1) a step of hydrogenating the surface of the diamond single crystal in an atmosphere substantially containing hydrogen, and (2) a step of forming a light receiving portion by exposing the hydrogenated surface of the diamond single crystal into an atmosphere containing ozone or active oxygen, in which the step (2) is carried out in an atmosphere containing ozone or active oxygen formed by introducing an oxygen gas into a chamber containing a diamond single crystal hydrogenated at the surface and irradiating a UV light thereto, and a UV/visible light blind ratio that is a ratio between the value of a photocurrent flowing under the irradiation of a UV light and the value of a photocurrent flowing under the irradiation of a visible light on the surface of diamond single crystal is controlled by controlling the concentration of bonded hydrogen at the surface of the diamond single crystal by controlling a UV light intensity or a UV light irradiation time.