A light emitting device comprising: an anode and a cathode disposed opposite to each other; a light emitting layer between the anode and the cathode; an electron transport layer between the light emitting layer and the cathode, and comprising a first component (C1) comprising a heterocyclic compound having atoms with lone-pair electrons and a second component (M or MC) comprising at least one of an electron-injecting metal (M) and an electron-injecting metal (MC) compound of a lower content than that of the first component (C1); further comprising a first organic layer comprising the first component (C1) as a main component over a first surface of the cathode, wherein the first surface of the cathode is opposite to a second surface of the cathode provided with the electron transport layer provided thereon; wherein the first organic layer includes a compound with lone-pair electrons as a main component, as a capping layer on the first surface of the cathode in addition to the electron transport layer provided on a second surface of the cathode ; and wherein the first organic layer further comprises a transition metal. an anode and a cathode disposed opposite to each other; a light emitting layer between the anode and the cathode; an electron transport layer between the light emitting layer and the cathode, and comprising a first component (C1) comprising a heterocyclic compound having atoms with lone-pair electrons and a second component (M or MC) comprising at least one of an electron-injecting metal (M) and an electron-injecting metal (MC) compound of a lower content than that of the first component (C1); further comprising a first organic layer comprising the first component (C1) as a main component over a first surface of the cathode, wherein the first surface of the cathode is opposite to a second surface of the cathode provided with the electron transport layer provided thereon; wherein the first organic layer includes a compound with lone-pair electrons as a main component, as a capping layer on the first surface of the cathode in addition to the electron transport layer provided on a second surface of the cathode ; and wherein the first organic layer further comprises a transition metal. an electron transport layer between the light emitting layer and the cathode, and comprising a first component (C1) comprising a heterocyclic compound having atoms with lone-pair electrons and a second component (M or MC) comprising at least one of an electron-injecting metal (M) and an electron-injecting metal (MC) compound of a lower content than that of the first component (C1); further comprising a first organic layer comprising the first component (C1) as a main component over a first surface of the cathode, wherein the first surface of the cathode is opposite to a second surface of the cathode provided with the electron transport layer provided thereon; wherein the first organic layer includes a compound with lone-pair electrons as a main component, as a capping layer on the first surface of the cathode in addition to the electron transport layer provided on a second surface of the cathode ; and wherein the first organic layer further comprises a transition metal. <EOS>