Nearly 100% exciton utilization in highly efficient red OLEDs based on dibenzothioxanthone acceptor
a Key Laboratory of Photochemical Conversion and Optoelectronic Materials and CityU‒CAS Joint Laboratory of Functional Materials and Devices, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
b University of Chinese Academy of Sciences, Beijing 100049, China
c Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, Hong Kong, China
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