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National Renewable Energy Laboratory

Indonesian government has vastly underestimated solar potential

A Jakarta thinktank says the authorities need to significantly raise their clean energy ambitions as even the most conservative estimates of the volume of solar capacity the nation could host far outstrip the 207 GW the energy ministry has suggested.

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New approach to III-V tandems sets 32.9% efficiency record

A collaboration between the U.S. National Renewable Energy Laboratory and Australia’s University of New South Wales has yielded a new efficiency record of 32.9% for a tandem cell device utilizing III-V materials. Key to the achievement was a new technique enabling the researchers to take advantage of “quantum wells” in the material that serve to trap charges and enable tuning of the cell bandgap to absorb more of the light spectrum.

Perovskite-based solar window tech from NREL

NREL’s new solar window darkens in the heat of the sun, producing electricity via embedded perovskite film. The tech is based on formamidinium-based metal halide perovskite, an inherently thermochromic material exhibiting significant optical changes.

A stress test for all seasons

Scientists led by the U.S. National Renewable Energy Laboratory (NREL) have developed a new stress testing protocol for PV modules, one designed to simultaneously expose modules to multiple stresses, as they likely would be in the field. Putting modules through this test, the researchers have already been able to reveal new information regarding backsheet degradation, and they promise new insights into other degradation mechanisms both known and unknown as well.

Nextracker inks 1 GW supply deal and claims up to 12% bifacial yield gain

The 1 GW fifth phase of the Mohammed bin Rashid Al Maktoum Solar Park in Dubai will feature NX Horizon trackers with the deal announced after the manufacturer published new bifacial yield gain claims.

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New world record for large-area organic PV module efficiency

Scientists in Germany have achieved 12.6% efficiency with a 26 sq cm organic panel and 11.7% for a 204 sq cm device. The feats were achieved with a new module layout and a slower, high-resolution, short-pulse laser structuring process.

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Designer molecules enable ‘two for one’ efficiency boost

Scientists in the U.S. have come a step closer to taking advantage of singlet fission – a phenomenon seen in certain solar cell materials that promises to greatly increase energy yield. By designing and testing various molecules, the group was able to better understand the fundamental processes behind the mechanism and optimize materials to better take advantage of it.

PV module recycling should prioritize high-purity silicon recovery

Recovering silicon of the quality required for reuse in panels is at the heart of mitigating device carbon footprints. R&D efforts should be ramped up now, says an international research group, so the technology is in place when huge volumes of modules begin to need replacing.

The cost of building stronger PV systems

Scientists in the U.S. have estimated the expense of strengthening solar systems. The researchers stressed that the upfront investment needed to take 13 key measures may be outweighed by the benefits.

French bifacial standards measure up

A global assessment of bifacial testing methods conducted in Singapore has endorsed the approach taken by France’s Institut National de l’Énergie Solaire.

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