The invention relates to an organic molecule, comprising or consisting of Formula A

##STR00001## wherein M.sup.TADF represents a TADF moiety, M.sup.NRCT represents a near-range charge transfer (NRCT) emitter moiety, and L represents a divalent bridging unit that links M.sup.TADF and M.sup.NRCT and is linked to M.sup.TADF od to M.sup.NRCT vi a single bond each.

Furthermore, the present invention relates to the use of such organic molecule as a luminescent emitter in an optoelectronic device.

Embodiments relate to an organic compound of Formula 1: ##STR00001##
The excitons in the triplet state are engaged in emission such that the emitting efficiency of the organic compound is increased. Embodiments also relate to an organic light emitting display device with an organic light emitting diode that includes the organic compound.

An aromatic compound which improves emission efficiency and an organic electroluminescence device including the same are provided. The organic electroluminescence device includes: a first electrode; a second electrode opposite to the first electrode; and a plurality of organic layers between the first electrode and the second electrode, where at least one organic layer among the plurality of organic layers includes the aromatic compound. The aromatic compound is represented by Formula 1 below.

##STR00001##

An organic electroluminescence device includes a first electrode, a second electrode, and an emission layer between the first electrode and the second electrode, wherein the emission layer includes a compound represented by Formula 1 below. Embodiments of the present disclosure exhibit improved emission efficiency and long life characteristics:

##STR00001##

An electro-optic element includes a first substrate defining first and second surfaces and a second substrate defining third and fourth surfaces. A first electrically conductive layer is disposed on the second surface and a second electrically conductive layer is disposed on the third surface. An electrochromic medium is disposed in a cavity between the first and second substrates, the electrochromic medium including an anodic component and a cathodic component. At least the anodic component is configured to reversibly attenuate transmittance of light having a wavelength within a predetermined wavelength range when in an electrochemically activated state. The anodic component includes a substituted ketal phenazine compound.

A heteroaromatic compound which can be used as the fluorescent guest material in the light emitting layer of the organic electroluminescence device is disclosed. The organic electroluminescence device employing the heteroaromatic compound of the present invention can operate under reduced driving voltage, increase current efficiency, and prolong half-life time.

Provided are a color conversion composition which contains at least one kind of compound represented by a specific general formula, a compound which is used in the color conversion composition and represented by a specific general formula, and a light emitting device which has a color conversion portion consisting of the color conversion composition and a light source.

An organic light-emitting material contains a 6-silyl-substituted isoquinoline ligand. The organic light-emitting material is a metal complex containing a 6-silyl-substituted isoquinoline ligand and may be used as a light-emitting material in a light-emitting layer of an organic electroluminescent device. These new complexes can provide redder and saturated emission and meanwhile demonstrate a significantly improved lifetime and efficient and excellent device performance. Further disclosed are an electroluminescent device and a compound formulation including the metal complex.

A compound comprising a first ligand L.sub.A of Formula I,

##STR00001##

wherein; two adjacent R.sup.A are joined together to form a structure of Formula II,

##STR00002##

fused to ring A is provided. In Formulas I and II, each of X.sup.1 to X.sup.4 is C or N; K is a direct bond, O, S, N(R.sup.), P(R.sup.), B(R.sup.), C(R.sup.)(R.sup.), or Si(R.sup.)(R.sup.); Y.sup.1 is a linking group that forms a five-membered ring with ring A; Y.sup.2 is CR or N; Z is linking group selected from O, S, Se, CR.sup.ZR.sup.Z, SiR.sup.ZR.sup.Z, GeR.sup.ZR.sup.Z, PR.sup.Z, NR.sup.Z and combinations thereof; and each R, R, R, R.sup., R.sup., R.sup.A, R.sup.B, R.sup.C, R.sup.Z, and R.sup.Z is hydrogen or a General Substituent. Formulations, OLEDs, and consumer products containing the same are also provided.

A compound is disclosed that is selected from the group consisting of a structure having Formula I

##STR00001##

and a structure having Formula II

##STR00002##