Jinko claims 24.79% efficiency for n-type monocrystalline cell


Chinese solar manufacturer JinkoSolar has achieved 24.79% conversion efficiency for an n-type, TOPCon, monocrystalline-silicon cell.

The company says the result, certified by Germany’s Institute for Solar Energy Research in Hamelin, is a world record for a large-size, contact-passivated cell. Jinko broke its own record in January, when it hit 24.2% efficiency.

In May 2018, Jinko’s best device had a reported efficiency of 23.95%, up from the 23.45% recorded in November 2017. Those landmarks were both certified by the Photovoltaic and Wind Power Systems Quality Test Center at the Chinese Academy of Sciences.

The latest Jinko cell features a 267.72cm2 monocrystalline silicon substrate grown using the Czochralski method.

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The manufacturer said it had applied several technologies to get the result, including passivating contacts, an advanced diffusion system, surface passivation and an advanced anti-reflection technique. Material upgrades were also integrated into the cell process, said Jinko. “The record-breaking monocrystalline silicon solar cell will be gradually applied to product production,” said the company.

In January, Jinko said its cell was based on its HOT design and featured tunnel-oxide passivating contact (TOPCon) technology.

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