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The Chinese manufacturer claims that its Bycium+ photovoltaic cell has reached an open circuit voltage of 748.6 mV. The result has been confirmed by the Solar Energy Research Institute in Hamelin, Germany.
JA Solar has announced that it has achieved a record open circuit voltage for a solar cell based on tunnel oxide passivated contact (TOPCon) technology.
The result was independently certified by Germanys Institute for Solar Energy Research Hamelin (ISFH), according to the Chinese PV module manufacturer.
JA Solar said the result was achieved for its Bycium+ solar cell, which achieved a power conversion efficiency of 26.07%, an open circuit voltage of 748.6 mV, a short circuit current of 13.71 mA and a fill factor of 83.82%.
“The new record demonstrates a passivation level comparable to that of heterojunction (HJT) PV cells and surpasses the open circuit voltage record of the rear contact (BC) cell,” says the manufacturer. “This milestone not only demonstrates the immense potential of TOPCon technology, but also sets a new benchmark for the development of crystalline silicon PV cells.”
The company attributed the result to the passivation structure of its TOPCon cells, which it said minimizes surface, mass and metal recombination. “By integrating innovations in metallization, new materials and processes, JA Solar has achieved a record high open circuit voltage,” it said, without giving further technical details.
The previous world record for open-circuit voltage for a TOPCon cell was set by Chinas DAS Solar in January. At the time, the Chinese manufacturer said it had achieved an open-circuit voltage of 742 mV, with a conversion efficiency of 26.33%.
The National Photovoltaic Industry Testing and Measurement Center of China (NPVM) confirmed the result. |
