Disclosed are a light-emitting device and a method of manufacturing the same. The light-emitting device includes: a first electrode; a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode and including a quantum dot including a first ligand bonded to a surface thereof; and a charge transport layer including an inorganic nanoparticle including a second ligand bonded to a surface thereof, wherein an interface between the emission layer and the charge transport layer includes a cross-link in which the first ligand on the surface of the quantum dot and the second ligand on the surface of the inorganic nanoparticle are linked by a cross-linking agent.

An inorganic light emitting diode in which at least one energy control layer including an organometallic compound interacting with a hydroxyquinoline moiety is disposed between an emitting material layer and at least one charge transfer layer and an inorganic light emitting device including the diode are disclosed. An exciton recombination zone is formed at the central region in the EML, and inorganic luminescent particles have minimal surface defects by introducing the energy control layer. The inorganic light emitting diode and the inorganic light emitting device can improve their color purity and luminous efficiency.

A compound having a structure of ##STR00001##
is disclosed. In these formulas, each R.sub.1, R.sub.2, and R.sub.3 is independently selected from hydrogen, alkyl, and aryl; at least one of R.sub.1 and R.sub.2 is a branched alkyl containing at least 4 carbon atoms, where the branching occurs at a position further than the benzylic position; where R.sub.1 and R.sub.3 are mono-, di-, tri-, tetra-, or no substitutions; and R.sub.2 is mono-, di-, or no substitutions. Heteroleptic iridium complexes including such compounds, and devices including such compounds are also disclosed.

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 compound, a coating composition including the same, and an organic light emitting device.

A metallic compound for use in an electronic apparatus having an organic light emitting element, the metallic compound having a refractive index: n.sub.620 nm≤about 1.60; n.sub.530 nm≤about 1.65; and n.sub.460nm≤about 1.68.

A light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an interlayer between the first electrode and the second electrode and including an emission layer, wherein the interlayer includes a heterocyclic compound of Formula 1:

A.sub.1B.sub.1].sub.n1  Formula 1

wherein, in Formula 1, the variables are defined herein.

A compound of: ##STR00001##
is disclosed. In Formula IV, ring B and ring C are each independently a 5 or 6-membered carbocyclic or heterocyclic ring; A-B represents a bonded pair of carbocyclic or heterocyclic rings coordinated to a metal M via a nitrogen atom in ring A and an sp.sup.2 hybridized atom in ring B; A-C represents a bonded pair of carbocyclic or heterocyclic rings; M is a metal having an atomic number greater than 40; L′ is a monoanionic bidentate ligand; m is the oxidation state of the metal M; and n is at least 1.

An organic electroluminescent element including a substrate, a pair of electrodes including an anode and a cathode, disposed on the substrate, and at least one organic layer including a light emitting layer, disposed between the electrodes, in which at least one layer of the organic layer(s) contains a compound represented by the following formula, has low driving voltage and excellent durability.

##STR00001##

(X.sup.1 to X.sup.11 represent CR.sup.0 or N, and R.sup.0 represents a hydrogen atom or a substituent. Adjacent two of X.sup.1 to X.sup.11 each independently represent at least CR.sup.0, R.sup.0s of the adjacent two CR.sup.0s are bonded to each other to form a ring, and only one R.sup.0 of the adjacent two CR.sup.0s represents an aryl group or a heteroaryl group.)

Novel host compounds consisting of carbazole and nitrile groups are disclosed. These compounds are useful in phosphorescent OLEDs.