Mullite-based substrates for polycrystalline silicon thin-film solar cells

The use of polycrystalline silicon thin-him on inexpensive ceramic substrat es for solar cells is one of the most promising approaches to realize both their high performance and cost reduction. Mullite-based ceramics prepared from kaolin-alumina are appropriate for cost-effective substrates for the p olycrystalline silicon thin-him solar cells. They fulfill requirements such as thermal and mechanical stability up to 1200 degrees C and no thermal ex pansion mismatch with silicon.