Hanergy sets new heterojunction module efficiency record

The Chinese thin-film manufacturer has claimed a world record 25.11% efficiency with a full size silicon heterojunction module, beating its own record. The achievement has been confirmed by Germany’s Institute for Solar Energy Research Hamelin.

Hanergy has announced its Chengdu Research and Development Center has broken its own world record for silicon heterojunction (HJT) efficiency, achieving 25.11% on a module with a surface area of more than two meters. The achievement surpasses Hanergy’s previous 24.85% mark on a similarly sized HJT module, set in August, and edges closer to the HJT cell efficiency record of 26.7% held for several years by Japanese producer Kaneka.

#ICYMI: Hanergy’s SHJ [silicon heterojunction] technology sets a new world record for 6-in silicon batteries with 25.11% conversion efficiency.#GoSolar #IndustryIlluminated #solar #energy #RenewableEnergy pic.twitter.com/4zYiuj60pj

— Hanergy (@HanergyGlobal) 15 November 2019

The record-setting module uses mass-production technology including indium tin oxide film and screen-printed electrodes. As with the CIGS efficiency record set recently by Hanergy subsidiary Miasolé, the company was keen to note the module was produced on a production line using only processes that can be transferred to large scale output.

“Our SHJ technology is a source of great pride … Despite only three years developing SHJ technology this recent breakthrough shows that our heterojunction division continues to make great progress and that the field of SHJ holds great significance to our business,” said Xu Xiaohua, CEO of Hanergy’s heterojunction division. He added, the technology will be important for both large scale ground mount and rooftop solar.

While the technology is nothing new – having been produced commercially by Panasonic for more than 20 years – heterojunction has caught the eye of the manufacturing industry in recent years as a potential next step up from PERC [passivated-emitter, rear-contact] modules.

Though questions remain over the complications involved in bringing HJT technology to scale, factories in Europe and Asia have come online this year and market share is expected to reach 5% next year. Further ahead, improvements in efficiency and production cost optimization are expected to help unleash the technology’s potential.

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