Synthesis of a high-efficiency red phosphorescent emitter for organic light-emitting diodes
- 1 January 2004
- journal article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry
- Vol. 14 (6) , 947-950
- https://doi.org/10.1039/b313843g
Abstract
Four novel red phosphorescent emitter compounds bis(1-phenylisoquinolinato-N,C2′)iridium(acetylacetonate), (piq)2Ir(acac), bis(1-(1′-naphthyl)isoquinolinato-N,C2′)iridium(acetylacetonate), (1-niq)2Ir(acac), bis(1-(2′-naphthyl)isoquinolinato-N,C2′)iridium(acetylacetonate), (2-niq)2Ir(acac) and bis(1-phenyl-5-methylisoquinolinato-N,C2′)iridium(acetylacetonate), (m-piq)2Ir(acac), have been synthesized and fully characterized. Electroluminescent devices with a configuration of ITO/NPB/CBP:dopant/BCP/AlQ3/Al were fabricated. All devices emitted in the red region with an emission ranging from 624 to 680 nm. (m-piq)2Ir(acac) shows a maximum brightness of 17164 cd m−2 at a current density of J = 300 mA cm−2 and the best luminance efficiency of 8.91 cd A−1 at a current density of J = 20 mA cm−2. (1-niq)2Ir(acac) exhibits pure-red emission with 1931 CIE (Commission International de L'Eclairage) chromaticity coordinates x = 0.701, y = 0.273.Keywords
This publication has 0 references indexed in Scilit: