Patent ID: 6927393
Filing Date: 2005-08-09
Classification: G01N

Abstract:
1. A method for the insitu monitoring and analyzing of parameters in the fabrication of electronic components comprising the steps of: providing a pressure vessel with opposed windows for transmission of an infrared light beam into and out of the vessel, the beam passing through the inside of the vessel; providing a workpiece to be treated in the vessel; providing one or more materials in the vessel for treating the substrate including a supercritical fluid, a high pressure liquid and optionally containing one or more solvents; providing an infrared spectrometer for generating and transmitting a beam of infrared light over a range of wavelengths through one of the windows into the pressure vessel, through the material contained in the vessel and out the opposed window; providing a reflective transmission mirror; providing a receiver for receiving reflected infrared light from the reflective transmission mirror; passing an infrared beam of light at a particular wavelength through one of the windows into the vessel, passing the beam through the vessel and out the opposed window at the reflective transmission mirror and receiving the reflected light beam in the receiver; detecting and analyzing the reflected infrared light; repeating the above over a desired wavelength range; and determining the composition of the material and other parameters in the vessel based on the detection and analysis of the reflected light beams.