NOVELTY - An organic electronic device comprises a first electrode, a second electrode, and an organic layer interposed between the first electrode and the second electrode. The organic layer comprises a 8-hydroxyquinolinolato metal complex (I), and a dibenzofuran compound (I) or (II).    USE - Organic electronic device preferably an organic light emitting device (claimed) including organic solar cell, switching element, organic FET, organic thin film transistor, organic light emitting FET, or organic LED.    ADVANTAGE - The device exhibits superior lifetime, power efficiency and quantum efficiency, and has high stability to thermal stress and low operating voltage, by using the electron transport layer.    DETAILED DESCRIPTION - An organic electronic device comprises a first electrode, a second electrode, and an organic layer interposed between the first electrode and the second electrode. The organic layer comprises an 8-hydroxyquinolinolato metal complex of formula (I), and a dibenzofuran compound of formula (I) or (II).    R1, R2=F, 1-8C alkyl, or 6-14C aryl optionally substituted by 1-8C 8alkyl; or    R1R2=combined to form fused benzene ring optionally substituted by 1-8C alkyl;    a, b=0, or 1-3;    R81=phenanthryl, pyrenyl, triphenylenyl, 1,10-phenanthrolinyl, triazinyl, dibenzothiophenyl, or pyrimidinyl, each optionally substituted by 1-18C alkyl, 6-14C aryl, or 2-20C heteroary;    R82=phenanthryl, pyrenyl, triphenylenyl, 1,10-phenanthrolinyl, triazinyl, dibenzothiophenyl, or pyrimidinyl, each optionally substituted by 1-18C alkyl, 6-14C aryl, or 2-20C heteroaryl;    R91=phenanthryl, pyrenyl, triphenylenyl, 1,10-phenanthrolinyl, triazinyl, dibenzothiophenyl, pyrimidinyl, or dibenzofuranyl, each optionally substituted by 1-18C alkyl, 6-14C 4aryl, or 2-20C heteroaryl;    R92=H, phenanthryl, pyrenyl, triphenylenyl, 1,1 0-phenanthrolinyl, triazinyl, dibenzothiophenyl, or pyrimidinyl, each optionally substituted by 1-18C alkyl, 6-14C aryl, or 2-20C heteroaryl;    A=single bond, arylene, or heteroarylene, each optionally substituted by 1-18C alkyl; or -SiR83R84-;    R83, R84=1-18C alkyl, or 6-14C aryl optionally substituted by 1-18C alkyl;    M=alkali metal atom, or alkaline earth metal atom; and    n=1 or 2.    Provided that:    (1) n is 1, if M is an alkali metal atom; and    (2) n is 2, if M is an earth alkaline metal atom.