Improvement of Power Efficiency in Phosphorescent White Organic Light-Emitting Diodes Using p-Doped Hole Transport Layer
(a)–(e) Normalized EL spectra of WOLEDs with different current density at fixed doping concentrations and (f) with different MoO3 doping concentrations at the same current density ( mA·cm−2). Each inset shows the corresponding CIE color coordinates. The arrows indicate the spectral and CIE color coordinates variations with increasing current density from 0.051 to 153 mA·cm−2.
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