Patent ID: 6727108
Filing Date: 2004-04-27
Classification: H01L

Abstract:
An optical evaluation method for evaluating processing performed with respect to a substrate having a semiconductor region in a chamber, said method comprising the steps of:supplying measurement light to the semiconductor region of said substrate in said chamber; intermittently supplying exciting light to said semiconductor region; and calculating a change rate of a reflectance of the measurement light by dividing a difference between the respective reflectances of the measurement light in the presence and absence of said exciting light supplied to said semiconductor region by the reflectance of the measurement light in the absence of the exciting light, wherein said processing is a process of introducing an impurity into said semiconductor region, the change rate of the reflectance of the measurement light at a specified energy value of the measurement light which provides a near extremal value in a spectrum of the change rate of the reflectance of the measurement light is calculated in said step of calculating the change rate of the reflectance, said specified energy value of the measurement light is any value included in a range of 2.9 to 3.7 eV, and said semiconductor region includes silicon.