Harvesting UV Light from sunlight just got ‘solid’ (IMAGE)
Caption
A new solid-state material from Kyushu University turns visible light into high-energy UV at sunlight intensity. By attaching alkyl chains to the sp³ carbon atoms of an organic molecule, the researchers create precisely controlled gaps between neighboring molecules. This spacing enables efficient triplet energy transfer, achieving a quantum yield above 60% in the solid state. When combined with a donor molecule, the system reaches 1.9% visible-to-UV upconversion efficiency.
Credit
Naoyuki Harada / Kyushu University
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