N type TOPCon solar cell technology is one of the most popular solar technology. This is due to its higher efficiency, lower degradation. Infolink consulting expects a market share for TOPCon solar modules >60% in 2024.
Below is a typical fabrication process flow for n-type TOPCon solar cells, as of 2024.
*As of 2024, selective emitter has been gradually phased out upon the introduction of new laser firing processes (the last process step)