An organic EL device includes a first emitting layer and a second emitting layer, in which the first emitting layer contains a first host material, the second emitting layer contains a second host material, the first and the second host material are mutually different, the first emitting layer and the second emitting layer at least contains a compound that emits fluorescence having a main peak wavelength of 500 nm or less, respectively, the compound contained in the first emitting layer and that emits fluorescence having a main peak wavelength of 500 nm or less is the same as or different from the compound contained in the second emitting layer, and a triplet energy T.sub.1(H1) of the first host material and a triplet energy T.sub.1(H2) of the second host material satisfy a numerical formula (Numerical Formula 1),

T.sub.1(H1)>T.sub.1(H2)  (Numerical Formula 1).

An organic electroluminescence device includes an anode, a cathode, a first emitting layer, and a second emitting layer provided between the first emitting layer and the cathode, in which the first emitting layer includes, as a first host material, a first compound that includes at least one group represented by a formula (11) below, the first compound being represented by a formula (1) below, the second emitting layer includes a second compound represented by a formula (2A) below as a second host material, and the first emitting layer is in direct contact with the second emitting layer.

##STR00001##

An organic electroluminescence device includes an anode, a cathode, a first emitting layer, and a second emitting layer provided between the first emitting layer and the cathode, in which the first emitting layer contains a first compound represented by a formula (101) below as a first host material, the second emitting layer contains a second compound represented by a formula (2) below as a second host material, and the first emitting layer is in direct contact with the second emitting layer.

##STR00001##

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.

Provided are organometallic compounds that includes a ligand L.sub.A of

##STR00001##

Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

Provided are compounds of formula Ir(L.sub.A).sub.x(L.sub.B).sub.y(L.sub.C).sub.z wherein the L.sub.A ligand has the Formula I

##STR00001## that are useful as phosphorescent emitters in OLEDs. Also provided are formulations comprising these compounds. Further provided are OLEDs and related consumer products that utilize these compounds.

A novel organic compound that is highly convenient, useful, or reliable is provided. The organic compound is represented by General Formula (G1). Note that at least one of R.sup.1 to R.sup.26 represents deuterium. At least one of R.sup.1 to R.sup.7 represents any one of an alkyl group, a cycloalkyl group, a trialkylsilyl group, and an aryl group. The others of R.sup.1 to R.sup.7 each independently represent any one of hydrogen, an alkyl group, a cycloalkyl group, a trialkylsilyl group, and an aryl group. R.sup.8 to R.sup.26 each independently represent any one of hydrogen, an alkyl group, a cycloalkyl group, a trialkylsilyl group, and an aryl group. The alkyl group has 3 to 10 carbon atoms, the cycloalkyl group has 3 to 10 carbon atoms, the trialkylsilyl group has 3 to 12 carbon atoms, and the aryl group has 6 to 25 carbon atoms.

Provided are a light-emitting device and an electronic apparatus. The light-emitting device includes a first electrode, a second electrode facing the first electrode, and an interlayer disposed between the first electrode and the second electrode. The interlayer includes an emission layer and an electron blocking layer, the electron blocking layer includes a first electron blocking layer and a second electron blocking layer. The first electron blocking layer includes a first compound, the second electron blocking layer comprises a second compound, and the first compound is different from the second compound.

The present specification relates to an organic light emitting device, a method for manufacturing the same, and a composition for an organic material layer.

The present invention includes novel compounds containing deuterated or partially deuterated xanthene and thioxanthene structures. These compounds may be useful as host materials with high triplet energies for phosphorescent electroluminescent devices.