Chinese solar module manufacturer Longi Green Energy has unveiled new wafers designed for cell technologies such as tunnel oxide passivated contact (TOPCon), heterojunction (HJT), and back-contact (BC).
Wang Yichun, product R&D director for Longi’s wafer division, said that Tera wafers offer comprehensive platform compatibility, high resistance consistency, and effective impurity absorption as key advantages.
The manufacturer said it is currently offering multiple size specifications to meet market demand and accommodate different thickness requirements. It said the new wafers provide consistent axial resistance distribution, effectively reducing the resistivity variance between the head and tail of silicon rods.
This enhancement, from three times to less than 1.5 times under the same rod length, reportedly facilitates a more concentrated distribution of cell efficiency, resulting in the production of higher-grade cells and minimizing discrepancies on the module side. Enhanced metal impurity absorption capacity of the wafers reportedly offer substantial potential for further improvements in cell efficiency over traditional products.
Longi said its internal tests have shown a 16% increase in bending strength for the Tera wafers compared to conventional alternatives, significantly enhancing fracture resistance. This heightened durability allows for thinner products and reduces fragmentation rates in the manufacturing process.
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.
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.