Tongwei unveils 26.0 3%-efficient TOPCon solar cell with high sheet resistance

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Tongwei reported a TOPCon solar cell with certified power conversion efficiency of 26.03% and an open-circuit voltage of 746.5 mV. The cell uses a low-cost etching process to create a selective emitter intended to reduce recombination losses.

The solar cell was fabricated using a low-cost photoresist-based etching process to create a selective emitter with a sheet resistance of up to 1,600 Ω/sq in non-contacted regions, reducing recombination losses while maintaining effective electrical contacts. The TOPCon device achieved a certified power conversion efficiency of 26.03% and an open-circuit voltage of 746.5 mV. The post Tongwei unveils 26.0 3%-efficient TOPCon solar cell with high sheet resistance appeared first on pv magazine Global.