Highly efficient red and green phosphorescent OLEDs based on benzonitrile and carbazole as bipolar host materials

Zhang, Qin; Guo, Shiyan; Zhang, Kai; Yu, Chao; Zhou, Haitao; Wang, Qiaochun; Zhang, Zhiyun; Huang, Jinhai; Wang, Hua; Wei, Bin

doi:10.1016/j.dyepig.2023.111874

Dyes and Pigments

2024

DOI: 10.1016/j.dyepig.2023.111874

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Highly efficient red and green phosphorescent OLEDs based on benzonitrile and carbazole as bipolar host materials

Qin Zhang,

Shiyan Guo,

Kai Zhang

et al.

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2024

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Cited by 2 publications

References 31 publications

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Novel bipolar host materials based on benzimidazole-hybridized phenanthridine for efficient red PhOLEDs

Yang,

Zhang,

et al. 2024

Dyes and Pigments

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Novel bipolar host materials based on benzimidazole-hybridized phenanthridine for efficient red PhOLEDs

Yang,

Zhang,

et al. 2024

Dyes and Pigments

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Synthesis and Performance of Deep-Red Phosphorescent Iridium Complexes with Pyrone as an Auxiliary Ligand

Jiang,

Hou,

Yan

et al. 2024

Molecules

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Two bis-cyclometalated heteroleptic iridium complexes incorporating 1-phenylisoquinoline (piq) as the main cyclometalating ligand and 3-hydroxy-2-methyl-4-pyrone (ma) or 2-ethyl-3-hydroxy-4H-pyran-4-one (ema) as the auxiliary ligand, namely Ir(piq)2(ma) (Ir-1) and Ir(piq)2(ema) (Ir-2), were developed and applied as deep-red phosphors in organic light-emitting diodes (OLEDs). The two auxiliary ligands had similar influences on the photophysical, electrochemical, and electroluminescent properties of the iridium complexes. Ir(piq)2(ma) (Ir-1) showed better luminescence performance in a simple phosphorescent OLED compared to the traditional red iridium complex Ir(piq)2(acac) and exhibited a current efficiency of 9.39 cd A−1 (EQE of 12.09%). In contrast, Ir(piq)2(ema) exhibited an efficiency of 8.6 cd A−1 (EQE of 10.19%).

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Highly efficient red and green phosphorescent OLEDs based on benzonitrile and carbazole as bipolar host materials

Cited by 2 publications

References 31 publications

Novel bipolar host materials based on benzimidazole-hybridized phenanthridine for efficient red PhOLEDs

Novel bipolar host materials based on benzimidazole-hybridized phenanthridine for efficient red PhOLEDs

Synthesis and Performance of Deep-Red Phosphorescent Iridium Complexes with Pyrone as an Auxiliary Ligand

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