Scientists Unveil New Method to Turn Light into Power
(MENAFN) In a major leap for renewable energy, scientists at the University of Cambridge have developed a new method to convert light into electricity using a single, lightweight material—an advance that could slash costs, boost efficiency, and simplify solar panel production.
Published Wednesday by Science Daily, the study introduces an innovative light-harvesting technique that allows the entire solar energy conversion process to occur within a single organic compound. The material, known as P3TTM, could redefine the future of both solar technology and electronics.
“This is the real magic,” said Biwen Li, lead researcher at the university’s Cavendish Laboratory. Unlike conventional organic materials, where electrons typically remain in isolated pairs, P3TTM features single unpaired electrons that align in a distinctive pattern when molecules are brought close together.
When exposed to light, these electrons can move between molecules, creating electrical charges. A thin solar cell made from P3TTM was able to convert nearly all incoming light into electricity—demonstrating high efficiency using only one material. The low energy required to make this happen, called the “Hubbard U,” reflects the minimal cost of placing two electrons on a single molecule.
Dr. Petri Murto engineered the molecular structure to precisely control these interactions, applying principles of Mott-Hubbard physics to enable efficient charge separation—without the need for complex multilayered designs.
The discovery coincides with the 120th anniversary of Sir Nevill Mott’s birth, whose pioneering work in condensed matter physics laid the theoretical groundwork for such breakthroughs.
“It feels like coming full circle,” said Prof. Richard Friend. “Mott's insights were foundational for my own career and for our understanding of semiconductors. To now see these profound quantum mechanical rules manifesting in a completely new class of organic materials, and to harness them for light harvesting, is truly special.”
“We are not just improving old designs,” added Prof. Hugo Bronstein. “We are writing a new chapter in the textbook, showing that organic materials are able to generate charges all by themselves.”
If developed further, the P3TTM-based solar technology could pave the way for affordable, ultra-light, and flexible solar panels—unlocking new possibilities for everything from wearable electronics to space-based energy systems.
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