Non-Aufbau Principle to Achieve High Stability Organic Luminescence Radicals |
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Authors: | TANG Benzhong |
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Institution: | The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, P. R. China |
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Abstract: | To solve the problem of stability of organic luminescence radicals, Li et al. proposed a new kind of organic luminescence radicals with non-Aufbau electronic structure by using donor-acceptor molecular structure. The stability of this kind of radicals was greatly improved and the high luminous efficiency was maintained. Using a non-Aufbau radical as the emission layer of an OLED, the maximum external efficiency of 5.3% has been achieved, which is among the highest efficiencies for pure organic near-infrared electroluminescence. This work has been published online in the Nature Materials on July 22, 2019. |
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