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Two-dimensional modeling of high plasma density inductively coupled sources for materials processing

Journal Article · · Journal of Vacuum Science and Technology. B, Microelectronics Processing and Phenomena; (United States)
DOI:https://doi.org/10.1116/1.587101· OSTI ID:5254060
; ;  [1]
  1. Department of Electrical and Computer Engineering, University of Illinois, Urbana, Illinois 61801 (United States)
Inductively coupled plasma sources are being developed to address the need for high plasma density (10[sup 11]--10[sup 12] cm[sup [minus]3]), low pressure (a few to 10--20 mTorr) etching of semiconductor materials. One such device uses a flat spiral coil of rectangular cross section to generate radio-frequency (rf) electric fields in a cylindrical plasma chamber, and capacitive rf biasing on the substrate to independently control ion energies incident on the wafer. To investigate these devices we have developed a two-dimensional hybrid model consisting of electromagnetic, electron Monte Carlo, and hydrodynamic modules; and an off line plasma chemistry Monte Carlo simulation. The results from the model for plasma densities, plasma potentials, and ion fluxes for Ar, O[sub 2], Ar/CF[sub 4]/O[sub 2] gas mixtures will be presented.
OSTI ID:
5254060
Journal Information:
Journal of Vacuum Science and Technology. B, Microelectronics Processing and Phenomena; (United States), Journal Name: Journal of Vacuum Science and Technology. B, Microelectronics Processing and Phenomena; (United States) Vol. 12:1; ISSN JVTBD9; ISSN 0734-211X
Country of Publication:
United States
Language:
English