A composition, including a first compound represented by Formula 1 and a second compound represented by Formula 2:

Ir(L.sub.11).sub.n11(L.sub.12).sub.n12(L.sub.13).sub.n13  Formula 1

Ir(L.sub.21).sub.n21(L.sub.22).sub.n22(L.sub.23).sub.n23  Formula 2

wherein L.sub.11, L.sub.12, L.sub.13, L.sub.21, L.sub.22, and L.sub.23 are each i) a bidentate ligand bonded to Ir of Formula 1 or 2 via two nitrogen atoms, ii) a bidentate ligand bonded to Ir of Formula 1 or 2 via a nitrogen atom and a carbon atom, or iii) a bidentate ligand bonded to Ir of Formula 1 or 2 via two carbon atoms, L.sub.11, L.sub.12, and L.sub.13 are different from one another; n11, n12, n21, and n22 are each independently 1 or 2; n13 and n23 are each independently 0 or 1; a sum of n11, n12, and n13 is 3; a sum of n21, n22, and n23 is 3; and L.sub.11 and L.sub.21 are different from each other.

The invention relates to compounds comprising functional substituents in a specific spatial arrangement, devices containing same, and the preparation and use thereof.

The present invention relates to bisbenzofuran-fused 2,8-diaminoindeno[1,2-b]fluorene derivatives and related compounds of formula (1) as materials for organic electroluminescent devices (OLEDs).

A compound including a first bidentate ligand L.sub.A that includes a structure of Formula I,

##STR00001##

are provided. The ligand L.sub.A is coordinated to a metal M and can be joined with other ligands. In Formula I, in addition to some exclusions, each of X.sup.1, X.sup.2, X.sup.3, and X.sup.4 is C or N; two R.sup.1, R.sup.2, and R.sup.3 can be joined or fused to form a ring; and each R.sup.1, R.sup.2, and R.sup.3 is independently a group containing the metal M, a hydrogen, or a General Substituent defined herein. Formulations, OLEDs, and consumer products containing the compound are also provided.

A photoelectric conversion device includes: a first carrier transport layer; a photoelectric conversion layer containing an ionic crystalline compound; and a polysiloxane layer between the first carrier transport layer and the photoelectric conversion layer, the polysiloxane layer containing a polysiloxane having a polar functional group R.sup.1.

The present disclosure relates to a compound represented by Formula 1 and an organic light emitting device using the same. The compound used as a material of an organic material layer of the organic light emitting device provides improved efficiency, low driving voltage, and improved lifetime characteristic.

An organometallic compound represented by Formula 1:

##STR00001## wherein, in Formula 1, groups and variables are the same as described in the specification.

The present specification relates to a nitrogen-containing compound, and a color conversion film, a backlight unit and a display apparatus including the same.

Provided are an organic electroluminescence device including an amine compound represented by Formula 1 in at least one of a plurality of organic layers and an amine compound represented by Formula 1. ##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, as a first host material, a first compound represented by a formula (1) below and having a group represented by a formula (11) below, the second emitting layer contains a second compound represented by one of formulae (2-1D) to (2-4D) below as a second host material, and the first emitting layer is in direct contact with the second emitting layer.

##STR00001## ##STR00002##