Patent ID: 7732061

Claim:
A light emitting element comprising: a pair of electrodes, and a layer between the pair of electrodes, the layer containing both a metal oxide and a triazine derivative represented by a general formula (1), wherein: R 1 to R 12 are independent, or at least one of R 1 and R 2 , R 3 and R 4 , R 5 and R 6 , R 7 and R 8 , R 9 and R 10 , and R 11 and R 12 is bonded to form a ring selected from an aromatic ring, a heterocycle, and an alicycle which we unsubstituted or have an alkyl group having 1 to 6 carbon atoms; and when R 1 to R 12 are independent, R 1 to R 12 are individually any one of hydrogen, an alky group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an halogen group, an acyl group having 1 to 6 carbon atoms, an alkoxycarbonyl group having 1 to 6 carbon atoms, an aryl group having 6 to 30 carbon atoms, and a heteroaromatic group having 2 to 18 carbon atoms, and wherein: X 1 , X 2 , and X 3 indicate any group of formulas (2) to (7) R 13 and R 14 are independent or bonded to each other to form an alicycle having 3 to 10 carbon atoms; when R 13 and R 14 are independent, R 13 and R 14 are selected from hydrogen, an alkyl group having 1 to 6 carbon atoms, an aryl group having 6 to 30 carbon atoms, and a heteroaromatic group having 2 to 18 carbon atoms; R 15 is any one of hydrogen, an unsubstituted aryl group having 6 to 30 carbon atoms, and an aryl group having 6 to 30 carbon atoms which is substituted by a substitutent selected from an alkyl group having 1 to 6 carbon atom, an acyl group having 1 to 6 carbon atoms, a halogen group, and a heteroaromatic group having 2 to 18 carbon atoms; R 16 and R 17 are selected from hydrogen, an unsubstituted aryl group having 6 to 30 carbon atoms, and an aryl group having 6 to 30 carbon atoms which is substituted by a substituent selected from an alkvl group having 1 to 6 carbon atoms, a halogen group, an aryl group having 6 to 30 carbon atoms, a heteroaromatic group having 2 to 18 carbon atoms, and a cyano group; and R 18 is any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, an unsubstituted aryl group having 6 to 30 carbon atoms, an aryl group having 6 to 30 carbon atoms which is substituted by a dialkylamino group, and a heteroaromatic group having 2 to 18 carbon atoms.