Carbon elimination from silicon kerf: Thermogravimetric analysis and mechanistic considerations.

ABSTRACT: 40% of ultrapure silicon is lost as kerf during slicing to produce wafers. Kerf is currently not being recycled due to engineering challenges and costs associated with removing its abundant impurities. Carbon left behind from the lubricant remains as one of the most difficult contaminants to remove in kerf without significant silicon oxidation. The present work enables to better understand the mechanism of carbon elimination in kerf which can aid the design of better processes for kef recycling and low cost photovoltaics. In this paper, we studied the kinetics of carbon elimination from silicon kerf in two atmospheres: air and N_2, under a regime of no-diffusion-limitation. We report the apparent activation energy in both atmospheres using three methods: Kissinger, and two isocon

SUBMITTER: Vazquez-Pufleau M 

PROVIDER: S-EPMC5241785 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature