NOVELTY - Organic electronic device comprises a first electrode, a second electrode, and an organic layer interposed between the first electrode and the second electrode, where the organic layer comprises an organic metal complex (I) and substituted dibenzofuran compounds (II).    USE - The organic electronic device is useful: in apparatus; as organic light emitting device (all claimed); and in organic solar cell (organic photovoltaics), switching element (including organic transistors, organic filed effect transistors and organic thin film transistor, organic light emitting field effect transistor, stationary and mobile visual display units, illumination units, visual display units of computers and televisions, visual display units in printers and kitchen appliances, visual display units of advertising panels, illuminations and information panels, visual display units in cell phones and laptops, visual display units in digital cameras and moving picture experts group audio layer 3 players, vehicles and destination displays on buses and trains, keyboards, items of clothing, furniture and wallpapers.    ADVANTAGE - The organic electronic device: exhibits high quantum efficiency with low operating voltage; and has high lifetime.    DETAILED DESCRIPTION - Organic electronic device comprises a first electrode, a second electrode, and an organic layer interposed between the first electrode and the second electrode, where the organic layer comprises an organic metal complex of formula (I) and substituted dibenzofuran compounds (II) of formula (IIA) or (IIB).    M = alkali metal or alkaline earth metal; either    R1, R2 = 8-14C aryl (optionally substituted by at least one 1-8C alkyl), F or 1-8C alkyl; or    R1R2 = fused benzene ring (optionally substituted by at least one 1-8C alkyl);    a, b = 0-3;    R81 = phenanthryl, pyrenyl, triphenylenyl, 1,10-phenanthrolinyl, triazinyl, dibenzothiophenyl or pyrimidinyl (all optionally substituted by at least one 1-18C alkyl, 8-14C aryl or 2-20C heteroaryl);    R82 = phenanthryl, pyrenyl, triphenylenyl, 1,10-phenanthrolinyl, triazinyl, dibenzothiophenyl or pyrimidinyl (all optionally substituted by at least one 1-18C alkyl, 8-14C aryl or 2-20C heteroaryl);    R91 = phenanthryl, pyrenyl, triphenylenyl, 1,10-phenanthrolinyl, triazinyl, dibenzothiophenyl, pyrimidinyl or dibenzofuranyl (all optionally substituted by at least one 1-18C alkyl, 8-14C aryl or 2-20C heteroaryl);    R92 = H, phenanthryl, pyrenyl, triphenylenyl, 1,10-phenanthrolinyl, triazinyl, dibenzothiophenyl or pyrimidinyl (all optionally substituted by at least one 1-18C alkyl, 8-14C aryl or 2-20C heteroaryl);    A = arylene or heteroarylene (both optionally substituted by at least one 1-18C alkyl), single bond or -SiR83R84-;    R83, R84 = 1-18C alkyl or 8-14C aryl (optionally substituted by at least one 1-18C alkyl); and    n = 1 (if M is alkali metal atom) or 2 (if M is alkaline earth metal).    INDEPENDENT CLAIMS are also included for:    (1) an organic electron transport layer, comprising (I) and (II);    (2) a method of using the organic layer in an organic electronic device; and    (3) an apparatus comprising an organic electron transport layer.