The development of white organic light-emitting diodes (WOLEDs) employing three tetradentate platinum-based emitters, PtN3N-ptb (red), PtON1 (blue), and PtOO8 (green), is described. Spectral and electrical results show that localization of charge buildup, energy transfers between dopants, and concentration-dependence of spectral shape are all major factors in determining the overall color quality of a device. WOLEDs are fabricated by optimizing the thickness of emissive layers, the concentration of dopants, and the stacking order of emissive layers. Ultimately, the device employing 6% PtN3N-ptb(red)/6% PtON1(blue)/6% PtOO8(green) stacking order of emissive layers demonstrates the Commission Internationale de L'Éclairage coordinates (CIE) coordinates of (0.35, 0.35) and Color Rendering Index (CRI) value of 80, peak Power Efficiency (PE) of 41 lm/W, and maximum External Quantum Efficiency (EQE) of 21.0%.
- Platinum emitters
- White OLEDs
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
- Materials Chemistry