Provided are a family of chromophores including naphthyl or naphthyl-like carbocyclic or heterocyclic rings as luminescent dyes that can be useful as emitters in OLEDs. These compounds have Formula I,

##STR00001##

Also provided are formulations including these inventive compounds. Further provided are OLEDs and related consumer products that utilize these inventive compounds.

Provided is a fluorene derivative of Chemical Formula 1: ##STR00001##
and an organic light emitting device comprising the same.

The present invention relates to an organic compound, an organic light-emitting diode including the organic compound, and a display device including the organic light-emitting diode. More particularly, the present invention relates to an organic compound including a compound represented by Chemical Formula 1 and being capable of improving luminous efficacy, thermal stability, and lifespan properties; an organic light-emitting diode including the organic compound; and a display device including the organic light-emitting diode.

The present invention relates to an organic compound, an organic light-emitting diode including the organic compound, and a display device including the organic light-emitting diode. More particularly, the present invention relates to an organic compound including a compound represented by Chemical Formula 1 and being capable of improving luminous efficacy, thermal stability, and lifespan properties; an organic light-emitting diode including the organic compound; and a display device including the organic light-emitting diode.

An organic photodetector includes: a first electrode; a second electrode facing the first electrode; an activation layer between the first electrode and the second electrode; a hole injection layer between the first electrode and the activation layer; and a hole transport layer between the hole injection layer and the activation layer, wherein the hole transport layer includes: a first hole transport layer including a p-dopant; and a second hole transport layer not including a p-dopant.

An organic photodetector includes: a first electrode; a second electrode facing the first electrode; an activation layer between the first electrode and the second electrode; a hole injection layer between the first electrode and the activation layer; and a hole transport layer between the hole injection layer and the activation layer, wherein the hole transport layer includes: a first hole transport layer including a p-dopant; and a second hole transport layer not including a p-dopant.

The present invention relates to an organic electroluminescent device, particularly to an organic light emitting diode (OLED) including an ETL stack of at least two electron transport layers, wherein the first electron transport layer comprises a first electron transport matrix compound and the second electron transport layer comprises second electron transport matrix compound and a redox n-dopant, and a device comprising the OLED.

The present invention relates to an organic electroluminescent device, particularly to an organic light emitting diode (OLED) including an ETL stack of at least two electron transport layers, wherein the first electron transport layer comprises a first electron transport matrix compound and the second electron transport layer comprises second electron transport matrix compound and a redox n-dopant, and a device comprising the OLED.

A composition which is useful for producing a light emitting device having excellent external quantum efficiency contains two or more compounds represented by the formula (C-1) and a phosphorescent compound, in which at least one of the compounds represented by the formula (C-1) is a compound in which R.sup.C is a group represented by the formula (C′-1). ##STR00001##
Ring R.sup.1C and Ring R.sup.2C represent an aromatic hydrocarbon ring or an aromatic hetero ring. R.sup.C represents an oxygen atom, a sulfur atom or a group represented by the formula (C′-1). ##STR00002##
Ring R.sup.3C and Ring R.sup.4C represent an aromatic hydrocarbon ring or an aromatic hetero ring. R.sup.C′ represents a carbon atom, a silicon atom, a germanium atom, a tin atom or a lead atom.

Provided is a compound of Formula I

##STR00001##

in which at least one moiety A, moiety B, moiety C, or moiety D is a 6-membered carbocyclic or heterocyclic ring, and at least one R.sup.A, R.sup.B, R.sup.C, or R.sup.D includes a group having Formula II

##STR00002##

where R.sup.X can be silyl, germyl, boryl, nitrile, F, CF.sub.3, cycloalkyl, heterocycloalkyl, or monocyclic heteroaryl. The compounds are useful as emitters in OLEDs providing improved efficiency.