The present invention is to provide a light emitting material, for an organic EL device, exhibiting higher light emitting efficiency, and particularly, to provide a blue light emitting material, wherein the light emitting material comprises a compound of the following General Formula (1):

##STR00001## X is an aryl group including a tertiary amine structure, and Y is a phenyl group having an alkyl or aryl substituent at one ortho position.

The present invention is to provide a light emitting material, for an organic EL device, exhibiting higher light emitting efficiency, and particularly, to provide a blue light emitting material, wherein the light emitting material comprises a compound of the following General Formula (1):

##STR00001## X is an aryl group including a tertiary amine structure, and Y is a phenyl group having an alkyl or aryl substituent at one ortho position.

A light emitting device of an embodiment includes a first electrode, a second electrode oppositely disposed to the first electrode, and an emission layer disposed between the first electrode and the second electrode. The emission layer includes a first host represented by Formula H-1, a second host represented by Formula H-2, and a first dopant represented by Formula 1, wherein Formulas H-1, H-2, and 1 are explained in the specification. The light emitting device shows improved emission efficiency properties.

A light emitting device of an embodiment includes a first electrode, a second electrode oppositely disposed to the first electrode, and an emission layer disposed between the first electrode and the second electrode. The emission layer includes a first host represented by Formula H-1, a second host represented by Formula H-2, and a first dopant represented by Formula 1, wherein Formulas H-1, H-2, and 1 are explained in the specification. The light emitting device shows improved emission efficiency properties.

Disclosed is a highly efficient organic light-emitting device that uses an anthracene derivative having a characteristic structure as a host compound in a light-emitting layer of the organic light-emitting device and includes a capping layer formed using a compound having a characteristic structure in the organic light-emitting device.

Disclosed is a highly efficient organic light-emitting device that uses an anthracene derivative having a characteristic structure as a host compound in a light-emitting layer of the organic light-emitting device and includes a capping layer formed using a compound having a characteristic structure in the organic light-emitting device.

A method for the purification of cyclic indole compounds that provides advantages over previously-known methods. Using the method of the present invention allows for the facile preparation of a good quality solid form of these compounds.

A method for the purification of cyclic indole compounds that provides advantages over previously-known methods. Using the method of the present invention allows for the facile preparation of a good quality solid form of these compounds.

Provided are a heterocyclic compound represented by Formula 1A, an organic light-emitting device including the same, and an electronic apparatus including the organic light-emitting device:

##STR00001## wherein a detailed description of Formula 1A is provided in the specification.

Provided are a heterocyclic compound represented by Formula 1A, an organic light-emitting device including the same, and an electronic apparatus including the organic light-emitting device:

##STR00001## wherein a detailed description of Formula 1A is provided in the specification.