A light emitting device includes: a first electrode; a second electrode overlapping the first electrode; m light emitting units between the first electrode and the second electrode; and m-1 charge generating layers between adjacent light emitting units, wherein the charge generating layer includes: an n-type charge generating layer and a p-type charge generating layer; at least one of a plurality of n-type charge generating layers includes a dopant including an alkali metal, and at least one of a plurality of n-type charge generating layers includes a dopant including a lanthanum metal; contents of the alkali metal and the lanthanum metal doped in the n-type charge generating layer are different from each other; and the m is a natural number of greater than or equal to 3.

An organic electroluminescence device comprising: a cathode; an anode; an emitting layer disposed between the cathode and the anode; and a first layer disposed between the emitting layer and the cathode, wherein the emitting layer comprises a host compound, the first layer comprises a first compound and a second compound, and the three compounds are in a relationship satisfying the following Conditions 1 and 2: (Condition 1) the electron affinity Af.sub.H of the host compound and the electron affinity Af.sub.ETA of the first compound satisfy the following expressions (1-1) and (1-2):

Af.sub.H<Af.sub.ETA  (1-1)

|Af.sub.H−Af.sub.ETA|≤0.10  (1-2) (Condition 2) the electron affinity Af.sub.H of the host compound and the electron affinity Af.sub.ETB of the second compound satisfy the following expressions (2-1) and (2-2):

Af.sub.H>Af.sub.ETB  (2-1)

|A.sub.fH−Af.sub.ETB|≤0.10  (2-2).

A photoelectric conversion device includes a first electrode and a second electrode facing each other, a photoelectric conversion layer between the first electrode and the second electrode and configured to absorb light in at least one part of a wavelength spectrum of light and to convert it into an electric signal, and an organic auxiliary layer between the first electrode and the photoelectric conversion layer and having a higher charge mobility than a charge mobility of the photoelectric conversion layer. An organic sensor may include the photoelectric conversion device. An electronic device may include the organic sensor.

An organic electroluminescence device comprising: a cathode, an anode, and at least one organic layer disposed between the cathode and the anode, wherein at least one layer of the at least one organic layer comprises a compound represented by the following formulas (1-1) and (1-3) or a compound represented by the following formulas (1-2) and (1-3). ##STR00001##

The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. The organic electroluminescent device having improved driving voltage and/or current efficiency characteristics can be provided by comprising the organic electroluminescent compound according to the present disclosure.

An organic electroluminescence device includes an anode, a cathode, an emitting layer between the anode and the cathode, a first electron transporting layer between the cathode and the emitting layer, and a second electron transporting layer between the cathode and the first electron transporting layer. The first electron transporting layer is directly adjacent to the emitting layer, the second electron transporting layer is directly adjacent to the first electron transporting layer, the emitting layer contains a first compound represented by Formula (1) below, the first compound has at least one group represented by Formula (11) below, the first electron transporting layer contains a second compound represented by Formula (2) below, and the second electron transporting layer contains a third compound represented by Formula (3) below.

##STR00001##

An organic electroluminescence device includes: an emitting region provided between a cathode and an anode; and a hole transporting zone provided between the anode and the emitting region, in which the hole transporting zone includes at least a first anode side organic layer and a second anode side organic layer, the first anode side organic layer is in direct contact with the second anode side organic layer, a total film thickness of the hole transporting zone is in a range from 20 nm to 80 nm, the first anode side organic layer contains no compound contained in the second anode side organic layer, the first anode side organic layer contains a first organic material and a second organic material, the first organic material is different from the second organic material, and a content of the first organic material in the first anode side organic layer is less than 50 mass %.

Disclosed are a compound for an organic optoelectronic device, an organic light emitting diode including the same, and a display device including the organic light emitting diode. The compound for an organic optoelectronic device represented by a combination of the following Chemical Formula 1 and Chemical Formula 2 provides an organic light emitting diode having life-span characteristics due to excellent electrochemical and thermal stability, and high luminous efficiency at a low driving voltage.

The present application relates to spirobifluorene derivatives of a formula (I), to the use thereof in electronic devices, and to processes for preparing said derivatives.

The present application relates to a compound which contains an indenocarbazole group, a particular arylamino group and an electron-deficient group bonded to the indenocarbazole group. The compound is suitable for use in electronic devices, in particular in organic electroluminescent devices.