A new yellow fluorescent dopant for high-efficiency organic light-emitting devices
| Autor: | Yao-Shan Wu, Tswen-Hsin Liu, Chin H. Chen, Hsian-Hung Chen |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Photoluminescence
Dopant Chemistry Doping Metals and Alloys Analytical chemistry Surfaces and Interfaces Electroluminescence Fluorescence Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention chemistry.chemical_compound law Materials Chemistry Chromaticity Rubrene Light-emitting diode |
| Zdroj: | Thin Solid Films. 496:626-630 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/j.tsf.2005.08.229 |
| Popis: | We describe the design and synthesis of a sterically hindered yellow dopant, tetra(t-butyl)rubrene (TBRb) which, when doped in either 1,4-bis[N-(1-naphthyl)-N′-phenylamino]-biphenyl or aluminum tris(8-hydroxyquinoline) (Alq3) as emitter, shows nearly 25% increase in luminance efficiency over that of the state-of-the-art rubrene (Rb) device without significantly effecting its corresponding color. At 5% doping in Alq3 and 20 mA/cm2 current drive condition, the electroluminescence efficiency of TBRb reaches 8.5 cd/A and 2.8 lm/W with a yellow color of Commission Internationale de l'Eclairage chromaticity coordinates (CIEx,y) = [0.52, 0.48], which is among the best ever reported for yellow electrofluorescence in organic light-emitting devices. |
| Databáze: | OpenAIRE |
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