Abstract
Diphenylamino- and triazole-endcapped fluorene derivatives which show a wide energy band gap, a high fluorescence quantum yield and high stability have been synthesized and characterized. Single-layer electroluminescent devices of these fluorene derivatives exhibited efficient deep blue to greenish blue emission at low driving voltage. The single-layer OLED of PhN-OF(1)-TAZ shows a maximum current efficiency of 1.54 cd/A at 20 mA cm-2 with external quantum efficiency (EQE) of 2.0% and CIE coordinates of (0.153, 0.088) in deep blue region, while the single-layer device of oligothienylfluorene PhN-OFOT-TAZ shows a maximum brightness of 7524 cd/m2 and a maximum current efficiency of 2.9 cd/A with CIE coordinates of (0.20, 0.40) in greenish blue.
Original language | English |
---|---|
Pages (from-to) | 57-64 |
Number of pages | 8 |
Journal | Organic Electronics |
Volume | 15 |
Issue number | 1 |
DOIs | |
Publication status | Published - Jan 2014 |
Scopus Subject Areas
- Electronic, Optical and Magnetic Materials
- Biomaterials
- General Chemistry
- Condensed Matter Physics
- Materials Chemistry
- Electrical and Electronic Engineering
User-Defined Keywords
- Blue
- Fluorene derivatives
- Nondoped
- Organic light-emitting diodes
- Single-layer