The pursuit of higher conversion efficiencies is an eternal theme in the PV industry. Among all the links in the chain, cell technology is the most fundamental and decisive element. As we look beyond the established PERC technology, whether heterojunction or TOPCon will become the dominant “next-gen” solar cell among China’s manufacturing giants is emerging as a balancing act between incumbent and upstart, reports Vincent Shaw from Shanghai.
The 2021 edition of the International Technology Roadmap for Photovoltaics (ITRPV) was published today by German engineering association VDMA. The report, which forecasts technology trends across the solar industry, expects PERC to maintain its position as the dominant cell technology and notes that large wafer formats are here to stay.
AE Solar has launched a new 380-400 W solar PV panel series, “Thunder”, which features PERC monocrystalline technology and efficiencies of up to 21.3%.
A new paper from scientists at Germany’s Fraunhofer Institute for Solar Energy Systems (ISE) examines the entire history of PERC technology, from its beginnings in laboratories more than 40 years ago to today, where it represents the majority of all PV cell production. And this story is far from over, as ISE lays out a pathway to efficiencies of 26% as well as use as the bottom cell in a tandem device that it believes will keep PERC technology in mass production to 2030 and beyond.
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.
The in-country analyst has revised up its expectation for this year and says a healthy unsubsidized project pipeline will keep the numbers ticking over in 2021. The spending plans necessary to ramp up renewables targets in the next five-year plan, though, could put the nation on a collision course with the EU.
The Korean manufacturer today announced it wants to enforce a ruling made in the regional court of Düsseldorf in June which prohibited rival Jinko Solar from making, selling, importing and distributing products which the court ruled had infringed one of Hanwha’s passivation patents.
A Chinese research group has developed a PERC cell on a commercial 180-μm-thick monocrystalline silicon wafer with a standard size of 156 × 156 mm2. The cell has an open-circuit voltage (VOC) of 0.677 V, a short short-circuit current (ISC) of 9.63 A, and a fill factor of 80.30%.
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.