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- W2057392783 abstract "Abstract The effects of p-type doping of wide bandgap ambipolar 4,4′-N,N′-dicarbazolebiphenyl (CBP) with WO 3 were investigated through detailed electrical device characterization. It was found that, to achieve effective doping for improved hole injection and transport, the doping level should be greater than 20 mol% and the doped layer should be at least 10 nm thick. A large downward shift of the Fermi level in WO 3 -doped CBP causes band bending and depletion at the doped/undoped CBP interface, resulting in an additional energy barrier which hampers hole transport. Simplified green phosphorescent organic light-emitting diodes (PhOLEDs) with CBP as the hole transport and host material were fabricated. With a WO 3 -doped hole transport layer, the PhOLEDs attained brightness of 11,163 cd/m 2 at 20 mA/cm 2 , and exhibited an improved reliability under constant-current stressing as compared to undoped PhOLEDs." @default.
- W2057392783 created "2016-06-24" @default.
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- W2057392783 date "2015-02-01" @default.
- W2057392783 modified "2023-09-26" @default.
- W2057392783 title "Simplified phosphorescent organic light-emitting diodes with a WO3-doped wide bandgap organic charge transport layer" @default.
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- W2057392783 doi "https://doi.org/10.1016/j.orgel.2014.11.008" @default.
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