'A dream technology': Japanese scientists might have unlocked the next generation of solar panels that stay cooler and last longer thanks to "spin-flip" material that achieves 130% energy conversion efficiency and here's how it works

Date:
Sun, 03 May 2026 17:35:00 +0000

Description:
Japanese scientists create new spin-flip material that could boost solar
panel efficiency by up to 130%.

FULL STORY ======================================================================Copy link Facebook X Whatsapp Reddit Pinterest Flipboard Threads Email Share this article 0 Join the conversation Follow us Add us as a preferred source on Google Newsletter Subscribe to our newsletter Spin-flip metal complexes capture duplicated excitons produced through singlet fission Proof-of-concept experiments reached over 110% to about 130% quantum yield Solid-state integration remains necessary before use in practical solar devices Japanese researchers have found a way to capture extra energy from sunlight using a metal-based system that reduces heat losses during conversion.

The work centers on a chemical structure known as a spin-flip emitter, built from molybdenum, that captures multiplied energy created during a process called singlet fission. The research was carried out by Kyushu University in Japan, in collaboration with Johannes Gutenberg University (JGU) Mainz in Germany. The findings were published in the Journal of the American Chemical Society . Article continues below You may like Re-engineered balsa wood can store heat and produce electricity in the dark Large solar farms in deserts may trigger rainfall, research suggests New AI tool speeds up design of efficient heat-to-electricity generators Energy easily stolen Solar cells already convert sunlight into electricity, but only part of the available energy ends up usable, leaving scientists hunting for ways to squeeze more output from the same incoming light.

One long-known ceiling comes from the mismatch between photon energies and
how semiconductors respond, which means some photons fail to trigger
electrons while others lose excess energy as heat.

This efficiency cap, known as the ShockleyQueisser limit, has pushed researchers to explore methods that reuse lost energy instead of letting it dissipate.

We have two main strategies to break through this limit, said Yoichi Sasaki, Associate Professor at Kyushu Universitys Faculty of Engineering. One is to convert lower-energy infrared photons into higher energy visible photons. The other, what we explore here, is to use SF to generate two excitons from a single exciton photon. Are you a pro? Subscribe to our newsletter Sign up to the TechRadar Pro newsletter to get all the top news, opinion, features and guidance your business needs to succeed! Contact me with news and offers from other Future brands Receive email from us on behalf of our trusted partners
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Singlet fission, described by the researchers as a dream technology for light conversion, plays a central role in the experiment because it allows one high-energy excitation to split into two lower-energy ones, theoretically doubling the number of usable energy carriers.

Capturing those duplicated excitons has been the harder problem, since competing energy transfer processes can redirect energy before it becomes useful.

The team addressed that bottleneck by pairing singlet fission materials with
a molybdenum-based near-infrared spin-flip emitter tuned to absorb specific triplet energy states. What to read next Quantum battery prototype charges faster as its size increases Meta to power data centers with space-based
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The energy can be easily stolen by a mechanism called Frster resonance energy transfer (FRET) before multiplication occurs, said Sasaki. We therefore
needed an energy acceptor that selectively captures the multiplied triplet excitons after fission.

Experiments using tetracene-based materials in solution produced quantum yields ranging from just over 110% to about 130%, meaning more energy
carriers were generated than incoming photons absorbed under laboratory conditions.

Results remain limited to solution testing rather than full solar devices, meaning practical application still depends on translating the chemistry into solid materials compatible with working panels.

Future work will focus on combining these materials into solid-state systems where energy transfer efficiency can be tested under conditions closer to
real solar cell operation.

The researchers point to possible applications beyond solar panels, including lighting technologies such as OLED , where managing exciton behavior plays a key role in performance.

Via Kyushu University Follow TechRadar on Google News and add us as a preferred source to get our expert news, reviews, and opinion in your feeds.



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Link to news story: https://www.techradar.com/pro/a-dream-technology-japanese-scientists-might-hav e-unlocked-the-next-generation-of-solar-panels-that-stay-cooler-and-last-longe r-thanks-to-spin-flip-material-that-achieves-130-percent-energy-conversion-eff iciency-and-heres-how-it-works


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