ISRA Vision passes 2.5 GW milestone with PERC inspection tool

Share

Passivated emitter and rear contact (PERC) technology is becoming increasingly common in mainstream PV cell production. A major advantage of the technology is that it can be deployed and an upgrade to many existing cell production lines. However, the technology brings with it some challenges for cell manufacturers including in the inspection of the cell rear side after passivation, laser opening, and firing.

Germany's ISRA Vision claims to have developed an inspection tool that can accurately detect faults that may occur with the laser opening and contacting process, through deploying light at multiple wavelengths to provide a detailed image of the backside of the cell. The company reports that its CHROME+ process then combines the information from the various illuminations resulting in only "sharply defined contours of a contact or defect" show up.

An advantage of the technique, ISRA claims, is that pseudo defects are not incorrectly defined, and previously undetected print defects show up. This avoids "unsatisfactory classifying," says ISRA.

Alongside the multiple light source CHROME+ technology, ISRA says that its complementary operation software allows for the tailored application of the technology. A CAD-style editor is incorporated in the CHROME+ tool which can define and then apply various parameters pertaining to contacting print shapes, which then can be rolled out across multiple lines. Specific inspection processes and defect classes can be incorporated by manufacturers into the editor program.

"This ensures… easy ramp-up of new production lines and allows for unitary quality standards of a cell type in which all of a manufacturer's plants and subsidiaries worldwide."

This content is protected by copyright and may not be reused. If you want to cooperate with us and would like to reuse some of our content, please contact: editors@pv-magazine.com.

Popular content

Chinese developer switches on world’s largest perovskite-based PV plant

09 December 2024 MicroQuanta, a Chinese perovskite solar specialist, has commissioned a 8.2 MW PV facility based on its 90 W perovskite panels in eastern China.

Share

Leave a Reply

Please be mindful of our community standards.

Your email address will not be published. Required fields are marked *

By submitting this form you agree to pv magazine using your data for the purposes of publishing your comment.

Your personal data will only be disclosed or otherwise transmitted to third parties for the purposes of spam filtering or if this is necessary for technical maintenance of the website. Any other transfer to third parties will not take place unless this is justified on the basis of applicable data protection regulations or if pv magazine is legally obliged to do so.

You may revoke this consent at any time with effect for the future, in which case your personal data will be deleted immediately. Otherwise, your data will be deleted if pv magazine has processed your request or the purpose of data storage is fulfilled.

Further information on data privacy can be found in our Data Protection Policy.

This website uses cookies to anonymously count visitor numbers. View our privacy policy.

The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this.

Close