Patent ID: 8184288
Filing Date: 2012-05-22
Classification: G01N,H01J

Abstract:
1. A method of depositing a silicon-containing material by utilizing a multi-step fill-in process in a deposition machine, comprising: repeating a D (deposition) step and an E (etching) step at least one time to fill a trench, wherein a radical-containing source is utilized as plasma source in the E step; and monitoring a plurality of spectrums along time during the D step and the E step, wherein the step of monitoring the plurality of spectrums along time during the D step comprising: obtaining a spectrum intensity of a deposited position the silicon-containing material to be filled in the trench from an OES system during the D step; and gauging a time point of starting deposition according to variation in the spectrum intensity of the silicon-containing material in the trench; and the step of monitoring the plurality of spectrums along time during the E step comprising: obtaining a spectrum intensity of a etched position the silicon-containing material to be etched in the trench from the OES system during the E step; and gauging a time point when the etched position being damaged according to variation in spectrum intensity of the etched position obtained from the OES system during the E step.