An ink composition for a light-emitting device includes a phosphine oxide-based charge transporting organic material, a first solvent represented by Formula 1, a second solvent represented by Formula 2, and a third solvent that is polar aprotic. A light-emitting device includes a layer prepared with the in composition. An electronic apparatus includes the light-emitting device:

HOR.sub.1(O).sub.mR.sub.2OH  [Formula 1]

R.sub.11OR.sub.12  [Formula 2]

An organic photoelectronic device includes a first electrode and a second electrode facing each other and a light-absorption layer between the first electrode and the second electrode and including a photoelectric conversion region including a p-type light-absorbing material and an n-type light-absorbing material and a doped region including an exciton quencher and at least one of the p-type light-absorbing material and the n-type light-absorbing material, wherein at least one of the p-type light-absorbing material and the n-type light-absorbing material selectively absorbs a part of visible light, and an image sensor includes the same.

A compound of Chemical Formula 1, and an organic photoelectric device, an image sensor, and an electronic device including the same are disclosed: ##STR00001## In Chemical Formula 1, each substituent is the same as defined in the detailed description.

A near-infrared absorber includes a compound represented by Chemical Formula 1. A near-infrared absorbing/blocking film, a photoelectric device, an organic sensor, and an electronic device may include the near-infrared absorber. ##STR00001## In Chemical Formula 1, X.sup.1, X.sup.2, Y.sup.1, Y.sup.2, Ar, Ar.sup.1, and Ar.sup.2 are the same as defined in the detailed description.

An organic photoelectronic device includes a first electrode and a second electrode facing each other and a light-absorption layer between the first electrode and the second electrode and including a photoelectric conversion region including a p-type light-absorbing material and an n-type light-absorbing material and a doped region including an exciton quencher and at least one of the p-type light-absorbing material and the n-type light-absorbing material, wherein at least one of the p-type light-absorbing material and the n-type light-absorbing material selectively absorbs a part of visible light, and an image sensor includes the same.

The invention relates to a compound of the general formula I

##STR00001##

to an optoelectronic component containing said type of compound, and to the use of said type of compound in optoelectronic components.

An organic electroluminescence device includes an anode, a cathode, and an emitting layer disposed between the anode and the cathode. The emitting layer comprises a delayed fluorescent compound M2 having at least one deuterium atom and a compound M3 having at least one deuterium atom. A singlet energy S.sub.1(M2) of the compound M2 and a singlet energy S.sub.1(M3) of the compound M3 satisfy the relationship S.sub.1(M3)>S.sub.1(M2).

The invention relates to an organic electronic component comprising a cathode, an anode, at least one light-emitting layer which is arranged between the anode and the cathode, a first layer, which comprises a first matrix material and a dopant, a second layer, which comprises a second matrix material, wherein the first layer is arranged between the second layer and the anode, wherein the second layer is arranged between the anode and the at least one light-emitting layer, wherein the dopant is a fluorinated sulfonimide metal salt of the following formula 1: ##STR00001##

Disclosed is an organic electroluminescent device. The organic electroluminescent device comprises an anode, a cathode and a first organic layer disposed between the anode and the cathode, wherein the first organic layer contains a first compound having a structure of Formula 1 and a second compound having a structure of Formula 2. Such a novel material combination composed of the first compound and the second compound may be used in a hole injection layer in the organic electroluminescent device and can endow the organic electroluminescent device with excellent characteristics of low voltage, high efficiency and a long lifetime and provide better device performance. Further disclosed are a display assembly and a compound combination.

Provided is a light-emitting element with high external quantum efficiency and a low drive voltage. The light-emitting element includes a light-emitting layer which contains a phosphorescent compound and a material exhibiting thermally activated delayed fluorescence between a pair of electrodes, wherein a peak of a fluorescence spectrum and/or a peak of a phosphorescence spectrum of the material exhibiting thermally activated delayed fluorescence overlap(s) with a lowest-energy-side absorption band in an absorption spectrum of the phosphorescent compound, and wherein the phosphorescent compound exhibits phosphorescence in the light-emitting layer by voltage application between the pair of electrodes.