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A series of high-performance hybrid white organic light-emitting diodes (WOLEDs) with simplified structures are developed by systematically investigating the influence of dopant concentrations. An ultrahigh color rendering index of 88 and a peak forward-viewing power efficiency of 44.9lm/W are achieved in the single-emitting-layer WOLED with a low concentration (0.1%) and a moderate concentration...
Two kinds of highly efficient, bright hybrid white organic light emitting diodes have been fabricated by utilizing ambipolar material 4,4-N,N-dicarbazolebiphenyl (CBP) and unipolar material N,N′-di(naphthalene-1-yl)-N,N′-diphenyl-benzidine (NPB) as the spacer, respectively. By adjusting the thickness of spacers together with effectively utilizing combinations of exciton-harnessed orange-phosphorescence/blue-fluorescence,...
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