Development of highly stable organic electroluminescent devices with a doped co-host emitter system

Autor:	Tswen-Hsin Liu, Chin H. Chen, Chung-Yeh Iou
Rok vydání:	2005
Předmět:	Anthracene Doping Analytical chemistry General Physics and Astronomy Electroluminescence Photochemistry Fluorescence chemistry.chemical_compound chemistry Pyran OLED General Materials Science Rubrene Common emitter
Zdroj:	Current Applied Physics. 5:218-221
ISSN:	1567-1739
DOI:	10.1016/j.cap.2003.11.089
Popis:	Efficient red organic light-emitting devices based on the fluorescent dye “4-(dicyanomethylene)-2- t - butyl -6-(1,1,7,7-tetra-methyljulolidyl-9-enyl)-4 H -pyran (DCJTB) doped in co-host emitter (CHE) systems of rubrene/ tris (8-hydroxyquinolinato)aluminum (Alq 3 ) [60/40] and of 9,10- di (2-naphthyl)anthracene (ADN)/Alq 3 [60/40] which achieved a luminance efficiency of 4.2–5.5 cd/A at 20 mA/cm 2 with Commission Internationale d'Eclairage coordinates of [0.64, 0.35]–[0.62, 0.37]. At high rubrene or ADN concentration (>60%), this DCJTB doped CHE system has the advantage of alleviating the current-induced fluorescence quenching problem often encountered in red organic electroluminescence (EL) devices and greatly improves the EL efficiency over a wide range of drive current conditions.
Databáze:	OpenAIRE
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