Spray Pyrolysis - a Versatile Technique for Thin Film Deposition in PV
Different applications of spray coating and spray pyrolysis processes in photovoltaics are presented in this paper. These include the deposition of thin dielectric layers (AlOx, TiOx, ZnO) and layer stacks, the deposition of TCOs and spray coating of organic solutions. The applications range from optically active layers to absorber layers and transparent conductive adhesives in tandem solar cells. Sprayed layers and layer stacks have been shown to be suitable for coating of thin ITO in silicon heterojunction solar cells, for MorphoColor® coating of glass panes and for double layer ARCs in standard solar cells. A sprayed IZO interconnect has been demonstrated in III-V on silicon tandem solar cells.