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OLED Surpasses 100 Percent Exciton Production Efficiency

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In a new approach to improving OLED efficiency, researchers are using singlet fission to split the energy of one exciton in two. This approach has made it possible for the team to exceed the 100 percent limit for exciton production efficiency in OLEDs. An exciton is a packet of energy in the OLED that is formed from the joining of one positive charge and one negative charge on a molecule. One exciton can release its energy to create one photon. Excitons come in two forms: singlets and triplets. Hajime Nakanotani (left), Ryo Nagata (center), and Chihaya Adachi (right) at Kyushu...Read full article

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