Efficient delayed fluorescence via triplet–triplet annihilation for deep-blue electroluminescence

P.-Y. Chou; H.-H. Chou; Y.-H. Chen; T.-H. Su; C.-Y. Liao; H.-W. Lin; W.-C. Lin; H.-Y. Yen; I.-C. Chen; C.-H. Cheng

doi:10.1039/C4CC01851F

Efficient delayed fluorescence via triplet–triplet annihilation for deep-blue electroluminescence†

P.-Y. Chou,*^a H.-H. Chou,^a Y.-H. Chen,^a T.-H. Su,^a C.-Y. Liao,^a H.-W. Lin,^b W.-C. Lin,^b H.-Y. Yen,^a I.-C. Chen^a and C.-H. Cheng*^a

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^a Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
E-mail: chcheng@mx.nthu.edu.tw

^b Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan

Abstract

Four 2-(styryl)triphenylene derivatives (TSs) were synthesized for deep-blue dopant materials. By using a pyrene-containing compound, DMPPP, as the host, the TS-doped devices exhibited significant delayed fluorescence via triplet–triplet annihilation, providing the highest quantum efficiency of 10.2% and a current efficiency of 12.3 cd A⁻¹.

Chemical Communications

Efficient delayed fluorescence via triplet–triplet annihilation for deep-blue electroluminescence†

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Efficient delayed fluorescence via triplet–triplet annihilation for deep-blue electroluminescence

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