Title :
Silicon on graphite cloth
Author :
Rand, J.A. ; Cotter, J.E. ; Thomas, C.J. ; Ingram, A.E. ; Bai, Y.B. ; Ruffins, T.R. ; Barnett, A.M.
Author_Institution :
AstroPower Inc., Newark, DE, USA
Abstract :
A new polycrystalline silicon solar cell has been developed that utilizes commercially available graphite cloth as a substrate. This solar cell has achieved an energy conversion efficiency of 13.4% (AM1.5G). It is believed that this is a record efficiency for a silicon solar cell formed on a graphite substrate. The silicon-on-fabric structure is comprised of a thin layer of polycrystalline silicon grown directly on the graphite fabric substrate. The structure is fabricated by a low-cost ribbon process that avoids the expense and waste of wafering. The fabric substrate gives structural support to the thin device. Critical to the achievement of device quality silicon layers is control over impurities in the graphite fabric. The silicon-on-fabric technology has the potential to supply lightweight, low-cost solar cells to weight-sensitive markets at a fraction of the cost of conventionally thinned wafers
Keywords :
elemental semiconductors; graphite; semiconductor materials; semiconductor thin films; silicon; solar cells; substrates; 13.4 percent; C; Si; energy conversion efficiency; graphite cloth; graphite substrate; low-cost ribbon process; polycrystalline silicon solar cell; silicon-on-fabric structure; thin layer; Conducting materials; Contamination; Costs; Energy conversion; Fabrication; Fabrics; Joining materials; Photovoltaic cells; Silicon; Substrates;
Conference_Titel :
Photovoltaic Energy Conversion, 1994., Conference Record of the Twenty Fourth. IEEE Photovoltaic Specialists Conference - 1994, 1994 IEEE First World Conference on
Conference_Location :
Waikoloa, HI
Print_ISBN :
0-7803-1460-3
DOI :
10.1109/WCPEC.1994.519959
