heterojunction

US scientists have tested a range of modern cell designs under strong ultraviolet light and have found that many of them, including p-type PERC and n-type heterojunction cells, are more susceptible to degradation than older back surface field designs. They noted that the rear side of bifacial cells may be particularly vulnerable.

Norwegian startup Over Easy Solar AS is launching a vertical PV system for rooftop applications at this year’s Smarter E in Munich, Germany.

With polysilicon production capacity having been rapidly rolled out after last year’s shortages, China analyst Frank Haugwitz has suggested global manufacturing capability for the ethylene vinyl acetate used on PV panels could struggle to keep pace with what is expected to be another record year of demand for solar.

The PV industry in 2021 has largely been defined by disruption: Price increases from raw materials to final shipping have led to shortages in PV module supply and project delays the world over. Despite these upsets, innovation has continued at pace, and the year has seen plenty of technological twists and turns that are sure to spell good news for solar in the long run. Read on for a look back at some of the biggest developments.

Should heterojunction solar technologies be temporarily shelved? Could copper plating replace screen-printed silver conductive surfaces in cells? Why are tandem cells a likely successor to PERC? Brett Hallam recently sat down with Natalie Filatoff in Sydney to explain the findings of a new study by UNSW that sought to answer these controversial questions.

Scientists in Germany analyzed the main sources of performance loss in a silicon heterojunction cell, and developed several optimization strategies to improve overall performance. By adding a second layer of amorphous silicon at the rear of the device, and a magnesium fluoride anti-reflective layer, they were able to boost cell efficiency by around 1% to reach 24.51%.

Meyer Burger plans to open a U.S. factory with an initial production capacity of 400 MW per year, with the potential to scale it up to multiple gigawatts of capacity.

Energy commissioner Kadri Simson has opened the 38th European solar technology conference and exhibition with a positive message for the industry. A week of tech and innovation events have got under way at this year’s event, which is again being held online.

The controlling shareholder of Russian PV manufacturer Hevel Solar says it has started construction on a gigafactory to manufacture solar ingots, wafers and heterojunction (HJT) cells in the Kaliningrad exclave of Russia, between Lithuania and Poland.

…but cell manufacturer Aikosolar is expecting a reversal in fortune for the first half of the year and has blamed rising solar panel material costs.