TOPCon

The n-type TOPCon solar module manufacturer is preparing to invest in a joint venture with state-controlled local partner PT Len Agra Energy to set up 1 GW of annual cell and panel capacity.

Scientists in Germany evaluated multiple silicon cell concepts based on both cost and efficiency in serving as the bottom layer in a perovskite-silicon tandem cell. The study, based on both simulation and experimental work, outlines advantages to various approaches with the silicon cell and concludes that in almost every case, perovskite-silicon tandem cells have the potential to bring solar costs down below what could be achieved with silicon alone.

Jolywood is one of the few PV manufacturers, who has placed its bet on TOPCon technology. Instead of focusing on the simplicity of the production process, Jolywood believes the conversion rate is more critical. With years of efforts, the company has established its leading position among TOPCon players. During the SNEC 2020 in Shanghai, pv magazine had the opportunity to interview Liu Zhifeng, Vice General Manager of Jolywood, and listened to his views on some hot topics, especially the cell tech route.

The Chinese manufacturer has claimed a world record for a large-size, contact-passivated solar cell. The result, certified by Germany’s Institute for Solar Energy Research in Hamelin, betters the company’s previous record by almost 0.6%.

The SOL 7 series comprises five products for Perc, Topcon and heterojunction devices.

The authorities in Beijing, concerned at ever greater solar production capacity announcements and oversupply fears, are preparing to introduce standards which would bring the recent mono Perc production explosion to a shuddering halt.

A research project in the Netherlands is seeking to assess the impact of large scale PV projects on soil quality and biodiversity. Principal scientist Wim Sinke, of Dutch research center TNO, says well-designed and operated and maintained solar parks could prove to have better outcomes than monoculture farming.

Chinese manufacturer Jolywood claims it has reached 23.5% cell efficiency on the production lines for its n-type TOPCon technology. The achievement, which has not been verified by a third party, represents a 0.3% improvement to Jolywood’s reported mass production efficiency.

Chinese solar manufacturer Talesun has announced plans to raise up to $226 million to expand PV cell and module production capacity by up to 2 GW, with a focus on heterojunction and TOPCon technologies.

TOPCon cell technology has become one of the two leading next-generation options after mono PERC. But for the n-type architecture to truly become a rival to PERC, high-quality and cost-effective production technologies must become settled.