Improvement of Power Efficiency in Phosphorescent White Organic Light-Emitting Diodes Using p-Doped Hole Transport Layer

Figure 6

(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 (𝐽=153 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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