Eco-friendly Cleaning Fluid
Wetter Is Better
The range of etching, texturizing, doping, and cleaning mono- and polycrystalline solar cells available from BASF has been extended to include the innovative and eco-friendly cleaning fluid SELURIS Clean.
Treatment with this fluid prior to phosphoric acid doping provides both final pre-dope wafer cleaning and efficient surface hydrophilization, facilitating dopant wetting. This promotes homogeneous distribution of phosphoric acid on the wafer. Post-doping treatment (phosphoric acid or POCl3 process) with the cleaning fluid offers efficient removal of phosphorus silicate glass residues and of the less active emitter zone (dead layer), leaving a clean and high performing emitter.