Patent ID: 7719260

Claim:
An apparatus for evaluating an epitaxial layer of an epitaxial wafer, comprising: a pretreatment unit for pre-treating an epitaxial wafer having a semiconductor wafer and an epitaxial layer formed on the semiconductor wafer; a metal-electrode which can be made contact with or vapor-deposited on the surface of the epitaxial layer of the epitaxial wafer which has been pre-treated in the pretreatment unit; a measuring electrode which can be made contact with or vapor-deposited on the semiconductor wafer; and a measuring unit which is connected to each of the electrodes and is used to measure physical properties of the epitaxial layer, wherein the pretreatment unit comprises an applying device for applying a carbon-bearing compound to a surface of the epitaxial layer, and an irradiation device for irradiating ultraviolet light to the surface of the epitaxial layer in an oxygen-bearing atmosphere.