White Organic Light-Emitting Diodes Using Two Phosphorescence Materials in a Starburst Hole-Transporting Layer

<table>EL spectra in sample A. Injected currents are 1, 5, and 10 mA.</table>

International Journal of Photoenergy

Figure 5: White Organic Light-Emitting Diodes Using Two Phosphorescence Materials in a Starburst Hole-Transporting Layer 