The objective of the project is to develop a novel, high quality and cost-effective system providing on-site recovery of PV grade Si particles (99.9999%) during wafering process (both for slurry and diamond sawing) for direct re-injection in the PV production line. This breakthrough will be reached

• Research unit: INNOSUISSE
• Project number: 14708.2;7 PFIW-IW

Short description (German)

On-site Si recovery during PV wafering (OSIRE)

Short description (English)

The objective of the project is to develop a novel, high quality and cost-effective system providing on-site recovery of PV grade Si particles (99.9999%) during wafering process (both for slurry and diamond sawing) for direct re-injection in the PV production line. This breakthrough will be reached from a combination of fundamental process know-how development and machine engineering. As the recovery system leads to much lower cost (<10$/kg) to obtain poly-Si than conventional production method (15-20$/kg), the success of the project is extremely meaningful in reducing the cost of PV energy, which is at present the bottleneck for PV industry to compete with traditional energy sources.

Abstract (German)

The objective of the project is to develop a novel, high quality and cost-effective system providing on-site recovery of PV grade Si particles (99.9999%) during wafering process (both for slurry and diamond sawing) for direct re-injection in the PV production line. This breakthrough will be reached from a combination of fundamental process know-how development and machine engineering. As the recovery system leads to much lower cost (<10$/kg) to obtain poly-Si than conventional production method (15-20$/kg), the success of the project is extremely meaningful in reducing the cost of PV energy, which is at present the bottleneck for PV industry to compete with traditional energy sources.

Abstract (English)

The objective of the project is to develop a novel, high quality and cost-effective system providing on-site recovery of PV grade Si particles (99.9999%) during wafering process (both for slurry and diamond sawing) for direct re-injection in the PV production line. This breakthrough will be reached from a combination of fundamental process know-how development and machine engineering. As the recovery system leads to much lower cost (<10$/kg) to obtain poly-Si than conventional production method (15-20$/kg), the success of the project is extremely meaningful in reducing the cost of PV energy, which is at present the bottleneck for PV industry to compete with traditional energy sources.