According to an embodiment of the present invention, there is provided an organic electroluminescent device for emitting red light having an organic layer that includes a light-emitting layer and is provided between an anode and a cathode. The light-emitting layer contains a red light-emitting guest material and a host material that is composed of a polycyclic aromatic hydrocarbon compound having a skeleton with four- to seven-membered rings. Furthermore, a light-enhancing layer that contains a light-emitting guest material for generating light having a wavelength shorter than that of light emitted by the light-emitting layer is provided adjacent to the light-emitting layer.
ORGANIC ELECTROLUMINESCENT DEVICE AND DISPLAY APPARATUS
申请人:Matsunami Shigeyuki
公开号:US20080164809A1
公开(公告)日:2008-07-10
An organic electroluminescent device for emitting red light is disclosed. The device includes: an anode; a cathode; and an organic layer including a light-emitting layer, wherein the light-emitting layer contains a red light-emitting guest material and a host material composed of a polycyclic aromatic hydrocarbon compound having a skeleton with 4 to 7 membered rings, and a photosensitizing layer containing a light-emitting guest material generating green light is provided adjacent to the light-emitting layer.
Organic Electroluminescent Element and Display Apparatus
申请人:Ueda Naoyuki
公开号:US20080278065A1
公开(公告)日:2008-11-13
An organic electroluminescent element is characterized by having a light emitting layer (
503
) containing a fluoranthene derivative and emitting green light. The fluoranthene derivative is introduced as a guest into the light emitting layer, and, by using an organic material having a fluorescence spectrum overlapping the absorption spectrum of the fluoranthene derivative, e.g., an arylanthracene derivative as a host, the organic electroluminescent element advantageously emits green light with satisfactorily excellent light emission efficiency and high color purity and has higher reliability.
Organic light-emitting material and method for producing an organic material
申请人:Takada Ichinori
公开号:US20070149815A1
公开(公告)日:2007-06-28
An organic light-emitting material characterized in that it is used in a light emitting layer in a green light emitting element and represented by the following general formula (1):
wherein: n
1
is an integer of 0 to 3; R
1
is an alkyl group having 10 carbon atoms or less; Ar
1
is a monovalent group which is derived from monocyclic or fused-ring aromatic hydrocarbon having 20 carbon atoms or less, and which optionally has a substituent having 10 carbon atoms or less; and Ar
2
is a divalent group which is derived from a ring assembly having 30 carbon atoms or less and being comprised of monocyclic or fused-ring aromatic hydrocarbon having 1 to 3 rings, and which optionally has a substituent having 4 carbon atoms or less. There can be provided an organic light-emitting material which has satisfactorily excellent light emission efficiency and high color purity as well as higher reliability and which is advantageously used to constitute a green light emitting layer, and a method for producing the same.