1. Research School of Engineering; College of Engineering and Computer Science; Australian National University; Canberra ACT 2601 Australia
2. Florida Solar Energy Center; University of Central Florida; Cocoa FL 32922 USA
3. c-Si Division; U.S. Photovoltaic Manufacturing Consortium; Orlando FL 32826 USA
4. Department of Materials Science and Engineering; University of Central Florida; Orlando FL 32816 USA