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Shuzo Hirata, Kenro Totani, Junxiang Zhang, Takashi Yamashita, Hironori Kaji, Seth R. Marder, Toshiyuki Watanabe and Chihaya Adachi Efficient Persistent Room Temperature Phosphorescence in Organic Amorphous Materials under Ambient Conditions Advanced Functional Materials 23

Version of Record online: 6 FEB 2013 | DOI: 10.1002/adfm.201203706

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Efficient persistent room temperature phosphorescence with a quantum efficiency of greater than 10% and a lifetime longer than 1 s from pure organic amorphous host-guest materials is demonstrated in air. Physical rigidity and oxygen blocking characteristics of amorphous steroidal compounds as the host greatly minimize quenching of long-lifetime triplet exitons of the guest by interaction with the host and oxygen.

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