Patent ID: 9658106
Date: 2017-05-23
CPC Classifications: G01J,H01J,H01L

Claim:
1. A plasma processing apparatus, comprising: a processing chamber into which a target substrate is loaded and in which a dopant is implanted into the target substrate using a plasma of a gas which contains an element used as the dopant; a wall probe connected to an electrode installed inside the processing chamber to measure a change in voltage corresponding to a density of charged particles in the plasma generated within the processing chamber; a window formed in a sidewall of the processing chamber; an OES (Optical Emission Spectrometer) which receives light of the dopant existing in the plasma through the window to measure a light emission intensity of the dopant existing in the plasma; and a control device which receives a measurement result obtained at the wall probe and a measurement result obtained at the OES to calculate a dose amount of the dopant implanted into the target substrate and to determine whether to perform a cleaning process for cleaning the process chamber.