Non-Doped Blue OLEDs Based on 9,9′-Dimethylfluorene Containing 10-Naphthylanthracene Derivatives

Abstract

A series of blue fluorescent materials 1–3 based on 10-(2-napthyl)-anthracene derivatives with the diverse aromatic groups were synthesized and multilayer non-doped devices using them as emitting materials were fabricated. All OLED devices using these materials emit deep blue light of 446–456 nm. In particular, device 3 exhibited highly efficient blue emissions with the luminous efficiency of 3.89 cd/A, a power efficiency of 2.47 lm/W, Quantum Efficiency of 3.03% at 20 mA/cm², and CIEx,y coordinates of (0.163, 0.149) at 6 V. Also, device 2 showed the efficient deep-blue emission with CIE coordinates of (x = 0.151, y = 0.104) at 6 V.

Keywords:

• Blue fluorescent materials
• organic light-emitting diode
• 10-naphthylanthracene derivative
• Suzuki cross-coupling reaction

Acknowledgment

This research (S2012-0870-000) was supported by the MKE (The Ministry of Knowledge Economy), Korea, under the ITRC (Information Technology Research Center)/CITRC (Convergence Information Technology Research Center) support program (NIPA-2012- H0301-12-4013) supervised by the NIPA (National IT Industry Promotion Agency).