Abstract
ABSTRACTAn extensive study on 02 effects on RIE of PECVD a-Si:H and SiNx has been carried out. Mixtures of CF2Cl2/HCI and CF2Cl2/CF3Cl were used as base gases. The addition of O2 into these gases changed the film etch rate and etch selectivity in different ways. Process results were interpreted by examining the plasma phase chemistry, the ion bombardment energy, and ESCA surface chemical states.
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