Adjusting White OLEDs with Yellow Light Emission Phosphor Dye and Ultrathin NPB Layer Structure

<table>Normalized EL spectra of NPB and (t-bt)<sub>2</sub>Ir(acac) material, the emission spectra were testing results of organic device structure ITO/CuPc/NPB/BCP/Alq/LiF/AL and ITO/NPB/CBP : (t-bt)<sub>2</sub>Ir(acac)/BCP/Alq/LiF/AL, respectively.</table>

International Journal of Photoenergy

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Figure 2

Figure 2: Adjusting White OLEDs with Yellow Light Emission Phosphor Dye and Ultrathin NPB Layer Structure 