SILICON-ON CERAMIC PROCESS Silicon Sheet Growth and Device Development for the Large-Area Silicon Sheet and Ceil Development Tasks of the Low-Cost Solar Array Project

摘要

The objective of this research program is to investigate the technical and economic fea¬sibility of producing solar-cell-quality sheet silicon. We plan to do this by coating one surface of carbonized ceramic substrates with a thin layer of large-grain polycrystalline silicon from the melt.nDuring the quarter, we demonstrated signigicant progress in several areas:n• We succeeded in fabricating a 10-cm² cell having 9. 9 percent conversion effi¬ciency (AMI. AR).n• The Honeywell-sponsored SCIM coating development succeeded in producing a 225-cm² layer of sheet silicon (IS inches x 2 inches).n• 100um-thick coatings at pull speed of 0.15 cm/sec were obtained, although approximately 50 percent of the layer exhibited dendritic growth.