TechnicalUp to date · Jan 15, 2026
TOPCon (Tunnel Oxide Passivated Contact)
An advanced silicon solar cell architecture that adds an ultra-thin oxide layer and doped polysilicon to reduce electron recombination at the contacts, improving efficiency to 24-26%.
Why It Matters
TOPCon is becoming the new standard cell technology, replacing PERC as the mainstream high-efficiency option. Most premium residential panels launched after 2024 use TOPCon cells.