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- W3039874519 abstract "Aromatically substituted phenanthroimidazoles at the C6 and C9 positions enhanced the thermal, photochemical and electroluminescence properties due to extension of conjugation. These new materials exhibit good photophysical properties with high thermal stability, good film-forming property and high luminous efficiency. The electroluminescence performances of C6 and C9 modified phenanthroimidazoles as host emitters were evaluated as well as the dopant in the fabricated devices. Among the non-doped devices, pyrene substituted PPI-Py or PPICN-Py based devices show maximum efficiency: PPI-Py/PPICN-Py: ηc (cd A-1) - 9.20/9.98; ηp (lm W-1) - 8.50/9.16; ηex (%) - 5.56/5.80. The doped OLEDs, m-MTDATA/TAPC:PPI-Cz (4.81/4.85%), m-MTDATA/TAPC:PPICN-Cz (5.23/5.26%), m-MTDATA/TAPC:PPI-An (5.01/5.04%), m-MTDATA/TAPC:PPICN-An (5.25/5.28%), m-MTDATA/TAPC:PPI-Py (5.61/5.65%) and m-MTDATA/TAPC:PPICN-Py (5.76/5.78%) show improved device efficiencies compared to non-doped devices. Designing C6/C9 modified phenanthrimidazole fluorophores is an efficient strategy for constructing highly efficient OLEDs." @default.
- W3039874519 created "2020-07-10" @default.
- W3039874519 creator A5014578918 @default.
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- W3039874519 date "2020-01-01" @default.
- W3039874519 modified "2023-09-27" @default.
- W3039874519 title "Efficient blue electroluminescence with an external quantum efficiency of 9.20% and CIE<sub>y</sub> < 0.08 without excimer emission" @default.
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- W3039874519 doi "https://doi.org/10.1039/d0ra03463k" @default.
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