Researchers at Fraunhofer ISE have developed a perovskite-silicon tandem solar cell utilizing a TOPCon bottom cell with a standard textured front surface. Their results indicate that the TOPCon bottom cell achieves shunt resistivity comparable to heterojunction cells in tandem devices, supporting scalable and cost-effective industrial production.
Researchers at the Fraunhofer Institute for Solar Energy Systems (Fraunhofer ISE) in Germany have fabricated a perovskite-silicon tandem solar cell based on a TOPCon design and a bottom photovoltaic device with excellent passivation properties.
Lead author Mario Hanser told media, “We have fabricated the first perovskite-silicon tandem device that integrates a TOPCon bottom cell with an industry-standard textured front surface, achieving an efficiency of over 30%.” He added, “Demonstrating the compatibility of the TOPCon cell design and its lean process flow with perovskite-silicon tandem integration represents a significant step toward cost-effective mass production of industrial tandem solar cells.”
