JA Solar’s Bycium+ cell has achieved a significant breakthrough, reaching a new high in cell efficiency and setting a new record with an open-circuit voltage of 748.6mV – the highest in the commercial TOPCon PV cell sector. Certified by the German Institute for Solar Energy Research in Hamelin (ISFH), the new record demonstrates a passivation level on a par with HJT PV cells and surpasses the BC cell’s open-circuit voltage record. The milestone not only demonstrates the potential of TOPCon technology but also establishes a new benchmark for the development of crystalline silicon PV cells.
The improvement in PV cell efficiency typically focuses on two areas: optical and electrical gain. Electrical gain is driven by reducing recombination losses and contact resistance. Open-circuit voltage is directly linked to recombination and is a key indicator of a cell’s performance. Higher open-circuit voltage leads to better efficiency and affects a module’s temperature coefficient.
“This milestone with our Bycium+ cell is not just a testament to JA Solar’s commitment to technological innovation, but also a contribution to advancing the PV industry as a whole,” commented executive president Aiqing Yang. “By setting a new benchmark for TOPCon cell open-circuit voltage, we aim to inspire broader progress across the industry, driving the development of high-performance, cost-effective PV solutions that accelerate the global transition to clean energy.”
