Red phosphorescent compounds and organic electroluminescent devices using the same
View Patent ↗Disclosed herein are red phosphorescent compounds of the following formula: wherein includes a phenyl part and a quinoline part, each ring of the phenyl part having at least one substituent selected from hydrogen, C 1 -C 4 alkyl groups and C 1 -C 4 alkoxy groups and is selected from 2,4-pentanedione, 2,2,6,6,-tetramethylheptane-3,5-dione, 1,3 -propanedione, 1,3-butanedione, 3,5-heptanedione, 1,1,1-trifluoro-2,4-pentanedione, 1,1,1,5,5,5 -hexafluoro-2,4-pentanedione and 2,2-dimethyl-3,5-hexanedione.
1. An organic electroluminescent (EL) device comprising
an anode,
a hole injecting layer,
a hole transport layer,
a light-emitting layer comprising a dopant,
an electron transport layer,
an electron injecting layer, and
a cathode
laminated in this order,
wherein the dopant is a red phosphorescent compound and is present in an amount of 0.5 to 20% by weight, based on the weight of a host, and
wherein the host is BAlq and the red phosphorescent compound is of Formula 1 below:
2. An organic electroluminescent (EL) device comprising
an anode,
a hole injecting layer,
a hole transport layer,
a light-emitting layer comprising a dopant,
an electron transport layer,
an electron injecting layer, and
a cathode
laminated in this order,
wherein the dopant is a red phosphorescent compound and is present in an amount of 0.5 to 20% by weight, based on the weight of a host, and
wherein the host is BAlq and the red phosphorescent compound is of Formula 2 below:
3. An organic electroluminescent (EL) device comprising
an anode,
a hole injecting layer,
a hole transport layer,
a light-emitting layer comprising a dopant,
an electron transport layer,
an electron injecting layer, and
a cathode
laminated in this order,
wherein the dopant is a red phosphorescent compound and is present in an amount of 0.5 to 20% by weight, based on the weight of a host, and
wherein the host is BAlq and the red phosphorescent compound is of Formula 3 below:
4. An organic electroluminescent (EL) device comprising
an anode,
a hole injecting layer,
a hole transport layer,
a light-emitting layer comprising a dopant,
an electron transport layer,
an electron injecting layer, and
a cathode
laminated in this order,
wherein the dopant is a red phosphorescent compound and is present in an amount of 0.5 to 20% by weight, based on the weight of a host, and
wherein the host is BAlq and the red phosphorescent compound selected from Formula 4 below: