Patent ID: 7649197

Claim:
A composite material comprising: a carbazole derivative represented by General Formula (1); and an inorganic compound which exhibits an electron accepting property to the carbazole derivative represented by General Formula (1), wherein R 11 and R 13 are either the same or different, and each of which represents any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, an aryl group having 6 to 25 carbon atoms, a heteroaryl group having 5 to 9 carbon atoms, an arylalkyl group, and an acyl group having 1 to 7 carbon atoms; Ar 11 represents one of an aryl group having 6 to 25 carbon atoms and a heteroaryl group having 5 to 9 carbon atoms; R 12 represents any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, and an aryl group having 6 to 12 carbon atoms; and R 14 represents any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms, and a substituent represented by General Formula (2), wherein R 15 represents any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, an aryl group having 6 to 25 carbon atoms, a heteroaryl group having 5 to 9 carbon atoms, an arylalkyl group, and an acyl group having 1 to 7 carbon atoms; Ar 12 represents one of an aryl group having 6 to 25 carbon atoms and a heteroaryl group having 5 to 9 carbon atoms; and R 16 represents any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, and an aryl group having 6 to 12 carbon atoms, wherein the carbazole derivative represented by General Formula (1) and the inorganic compound are mixed, and wherein the inorganic compound is any one or more of titanium oxide, vanadium oxide, molybdenum oxide, tungsten oxide, rhenium oxide, ruthenium oxide, chromium oxide, zirconium oxide, hafnium oxide, tantalum oxide, and silver oxide.