Fraunhofer Institute for Solar Energy Systems ISEThe field of metallization and patterning is very closely linked to all other areas within solar cell manufacture. Different processes can be used to print a range of media either onto the entire surface or in extremely precise patterns. By replacing silver with copper, it is possible to achieve high cell efficiencies and outstanding long-term stability while simultaneously reducing costs. Optical alignment systems enable patterns to be printed onto wafers with pinpoint accuracy, for example to manufacture interdigitated contact structures or selective emitters. The quantitative evaluation of process results is possible thanks to comprehensive characterization options.
Single-surface in-line copper deposition on silicon solar cells with lightinduced electroplating.
© Achim Käflein