L R AS Published on Monday 6 February 2023 - n° 433 - Categories:R&D
R&D highlights: inverted perovskite solar cell, 20% cadmium selenium telluride, CIGS with silver, polymer cushion to protect the perovskite cell.
R&D highlights: inverted perovskite solar cell, 20% cadmium selenium telluride, CIGS with silver, polymer cushion to protect the perovskite cell.
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Researchers at the Helmholtz-Zentrum in Berlin have developed an inverted perovskite solar cell.
with an active surface area of 9.6 mm². They used polymer dipoles for interfacial engineering. The cell retained 96% of its initial power conversion efficiency after continuous monitoring of the maximum power point (MPP) for 1,000 hours.
A cadmium selenium telluride solar cell achieves 20% efficiency thanks to the bandgap gradient. Americans have increased the efficiency and open-circuit voltage of this cell.
Swiss researchers have built a thin-film solar cell based on copper, gallium, indium and selenium (CIGS), using a small amount of silver (Ag) to alloy the CIGS absorber. This process would improve efficiency, open-circuit voltage and fill factor, while compensating for the low band gap of the CIGS layer.
Germans have discovered a polymer compound that, when added to the precursor materials of perovskite thin films, wraps around the perovskite crystals, acting as a cushion to protect the perovskite structure from thermomechanical stresses. This increases the cell's efficiency to 24.6%.
A new 10 kWh lithium iron phosphate battery has been developed by V-Tac. It should operate for 5,000 cycles. It comes with a five-year guarantee.
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https://www.pv-magazine.com/2023/02/02/inverted-perovskite-solar-cell-with-24-1-efficiency/
https://www.pv-magazine.com/2023/01/31/silver-alloyed-cgis-solar-cell-with-18-7-efficiency/
https://www.pv-magazine.com/2023/01/31/new-lithium-iron-phosphate-batteries-for-rooftop-solar/
