Sol Proce solar wafer processing technology is the critical foundation upon which high-efficiency solar cells are built. Our wet processing systems deliver precise, repeatable results for every step of the wafer preparation sequence, from incoming raw wafer to diffusion-ready substrate.

Saw Damage Removal

Wire-saw cutting leaves a damaged crystal lattice layer on the wafer surface that significantly reduces cell efficiency if not properly removed. Sol Proce wet etching baths dissolve this damaged surface layer uniformly, leaving a smooth, defect-free wafer ready for texture etching and subsequent process steps.

Sol Proce Surface Texturing

Sol Proce alkaline and acid texturing processes create micro-pyramidal surface structures that dramatically reduce optical reflection from the wafer surface. For monocrystalline wafers, KOH-based anisotropic etching produces uniform pyramid textures; for multicrystalline wafers, Sol Proce acid texturing systems deliver isotropic surface roughening optimized for this crystal structure.

Wafer Cleaning and Contamination Removal

Sol Proce ozone-enhanced cleaning removes organic contamination, metallic impurities, and native oxide layers with minimal chemical consumption. Our ozone cleaning process delivers wafers with fewer surface defects and improved minority carrier lifetime compared to conventional cleaning sequences.

Edge Isolation and Rear Polishing

Sol Proce edge isolation equipment removes the parasitic p-n junction formed on wafer edges during diffusion, preventing shunting losses in finished solar cells. Rear-side polishing further reduces recombination at the silicon back surface, boosting open-circuit voltage and improving overall cell conversion efficiency.