Scientists Just Broke the Solar Power Limit Everyone Thought Was Absolute

[erronis]

https://scitechdaily.com/scientists-just-broke-the-solar-power-limit-everyone-thought-was-absolute/

A new "energy-multiplying" solar breakthrough could push efficiency beyond 100% and transform how we capture sunlight.

I'm sure the "beyond 100%" statement will raise a couple of eyebrows. And I know at least one DUer who would be questioning this.

Solar energy is widely seen as a key tool in reducing reliance on fossil fuels and slowing climate change. The Sun delivers a vast amount of energy to Earth every second, but today's solar cells can only capture a small portion of it. This limitation comes from a so-called "physical ceiling" that has long been considered unavoidable.

Breakthrough Spin-Flip Technology Boosts Solar Efficiency

In a study published today (March 25) in the Journal of the American Chemical Society, researchers from Kyushu University in Japan, working with collaborators at Johannes Gutenberg University (JGU) Mainz in Germany, introduced a new approach to overcome this barrier. They used a molybdenum-based metal complex known as a "spin-flip" emitter to capture extra energy through singlet fission (SF), often described as a "dream technology" for improving light conversion.

This method achieved an energy conversion efficiency of about 130%, exceeding the traditional 100% limit and pointing toward more powerful future solar cells.

. . .

Using Singlet Fission To Multiply Energy

"We have two main strategies to break through this limit," says Yoichi Sasaki, Associate Professor at Kyushu University's 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."

. . .

Reference: "Exploring Spin-State Selective Harvesting Pathways from Singlet Fission Dimers to a Near-Infrared Emissive Spin-Flip Emitter" by Percy Gonzalo Sifuentes-Samanamud, Adrian Sauer, Aki Masaoka, Yuta Sawada, Yuya Watanabe, Ilias Papadopoulos, Katja Heinze, Yoichi Sasaki and Nobuo Kimizuka, 25 March 2026, Journal of the American Chemical Society.
DOI: 10.1021/jacs.5c20500