Provided is a polycyclic compound of Formula 100:

##STR00001## where Cy3 and Cy4 are the same as or different from each other, and are each independently one selected from the group consisting of a substituted or unsubstituted aromatic hydrocarbon ring, a substituted or unsubstituted aliphatic hydrocarbon ring, and a substituted or unsubstituted aromatic hetero ring, or a ring in which two or more rings selected from the group are fused,
and an organic light-emitting element comprising the same.

An organic light emitting device including a light emitting layer, which comprises one or more of compounds represented by Formulae 1-1 to 1-3; and a compound represented by Formula 2.

##STR00001## ##STR00002##

A light-emitting device having a light-emitting layer containing a delayed fluorescence emitter and an n-type compound has an extended lifetime and high performance. A compound having a triazine ring substituted by a spiro aromatic group can be used as the n-type compound.

Disclosed are a compound for an organic optoelectronic diode, a composition for an organic optoelectronic diode, including the compound for the organic optoelectronic diode, an organic optoelectronic diode including the same, and a display device.

A polycyclic compound represented by Formula 1:

##STR00001##

wherein, in Formulae 1, ring CY.sub.1, ring CY.sub.2, and ring CY.sub.3 are each independently a C.sub.5-C.sub.30 carbocyclic group or a C.sub.1-C.sub.30 heterocyclic group; X.sub.1 is B, N, P, P(═O), P(═S), Al, Ga, As, C(R.sub.4), Si(R.sub.4), or Ge(R.sub.4); Y.sub.1 and Y.sub.2 are each independently O, S, Se, B(R.sub.5), N(R.sub.5), C(R.sub.5)(R.sub.6), Si(R.sub.5)(R.sub.6), Ge(R.sub.5)(R.sub.6), Ga(R.sub.5), As(R.sub.5) P(R.sub.5), P(═O)(R.sub.5), P(═S)(R.sub.5), or Al(R.sub.5); and R.sub.1, R.sub.2, R.sub.3, b1, b2, and b3 are as provided herein.

The present specification relates to a heterocyclic compound represented by Chemical Formula 1, an organic light emitting device including the same, a method for manufacturing the same, and a composition for an organic material layer.

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

A compound is represented by one of formulae (11) to (13). R.sub.1 to R.sub.4 each independently represent a group represented by a formula (1-1) or the like, or a group represented by a formula (2-1), a group represented by a formula (2-2) or the like. At least one of R.sub.1 to R.sub.4 is the group represented by the formula (1-1) or the like. At least one of R.sub.1 to R.sub.4 is the group represented by the formula (2-1), (2-2) or the like. For instance, X.sub.1 represents an oxygen atom, a sulfur atom, or CR.sub.151R.sub.152, R.sub.101 to R.sub.110 and R.sub.151 and R.sub.152 each independently representing a hydrogen atom or a substituent. For instance, R.sub.161 to R.sub.168 and R.sub.171 and R.sub.180 each independently represent a hydrogen atom or a substituent. * each independently represents a bonding position to a carbon atom in a benzene ring in each of formulae (11) to (13): ##STR00001##

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

##STR00001## wherein details of Formula 1 are the same as described in the present specification.

A compound for an organic optoelectronic device, a composition for an organic optoelectronic device including the same, an organic optoelectronic device, and a display device, the compound being represented by Chemical Formula 1:

##STR00001##