Idemitsu Kosan Company, Limited

Keiji Okinaka

Toshinari Ogiwara

Masahiro Kawamura

Satomi Tasaki

Kei Yoshida

Hitoshi Kuma

Takushi Shiomi

Keiichi Yasukawa

Shota Sawano

Kazuki Nishimura

Yoshiaki Takahashi

Hiromi Nakano

Hisato Matsumoto

Yoshikazu Tanaka

An organic EL device includes an emitting layer, a first layer adjacent to an anode-side of the emitting layer, and a second layer adjacent to a cathode-side thereof. The emitting layer contains first to third compounds. The first and second layers contain compounds of Formulae (1) and (2), respectively. The first and second compounds exhibits fluorescence and delayed fluorescence, respectively. Singlet energies Sof the first to third compounds satisfy S(M3)>S(M2)>S(M1). In Formula (1), Ra-Ra, Rb-Rband Rc-Rcare each a substituent, etc. In Formula (2), X-Xare each nitrogen atom, etc, Ar-Arare each a group of Formula (2A) or aryl group, etc, A is a group of Formula (2A) in which HAr is of Formula (2B), a is 1 to 5, Lis a linking group, etc. In Formula (2B), X-Xare each nitrogen atom, etc, and Yis oxygen, sulfur or nitrogen atom, etc,

Organic electroluminescent element and electronic device

An organic electroluminescence device includes: an anode; an emitting layer; and a cathode, the emitting layer containing a first material and a second material represented by a formula (21) below. The first material has a singlet energy larger than a singlet energy of the second material.

An organic electroluminescence device including: at least a first pixel and a blue pixel apposed on a substrate, in which the first pixel and the blue pixel each have an anode and a cathode, and the first pixel and the blue pixel have a first emitting layer and a blue emitting layer, respectively; a hole transporting zone provided between the first emitting layer and the anode and between the blue emitting layer and the anode; and an electron transporting zone provided between the first emitting layer and the cathode and between the blue emitting layer and the cathode, in which the first emitting layer includes a delayed fluorescent second compound and a fluorescent first compound capable of emitting light ranging from 500 nm to 660 nm, and the electron transporting zone includes: a first common layer; and an additional layer provided between the first emitting layer and the cathode.

Organic electroluminescence element, display device, and electronic apparatus

A compound is represented by a formula (1) below, in which k is an integer of 0 or more, m is an integer of 1 or more, n is an integer of 2 or more. L is a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 30 ring carbon atoms, CN is a cyano group, and Dand Dare each independently represented by one of a formula (2), a formula (3) and formula (3x) below, Dand Dbeing optionally mutually the same or different.

Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic device

A compound is represented by one of formulae (11) to (13). Rto Reach independently represent a group represented by a formula (1-1), a group represented by a formula (2-1), a group represented by a formula (2-2) or the like. At least one of Rto Ris the group represented by the formula (1-1) or the like. At least one of Rto Ris the group represented by the formula (2-1), (2-2) or the like. For instance, in the formula (1-1), Rrepresents a substituent, and Rto Reach independently represent a hydrogen atom or a substituent. For instance, in the formulae (2-1) to (2-2), Rto Rand Rto Reach 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 the formulae (11) to (13),

Compound, material for organic electroluminescent element, organic electroluminescent element, and electronic device

A light-emitting apparatus includes an organic electroluminescence device, a first color conversion portion that transmits a first color light, and a second color conversion portion that transmits a second color light. The organic electroluminescence device includes an anode, a cathode, and one or more organic layers interposed between the anode and the cathode. At least one of the organic layer(s) is an emitting layer including a host material and a dopant material that emits light including the first color light and the second color light. A difference &#x394;ST(D) between singlet energy EgS(D) of the dopant material and an energy gap Eg(D) at 77K of the dopant material satisfies Numerical Formula 1 below,&#x394;()=()&#x2212;77()&#x3c;0.3 (eV)&#x2003;&#x2003;(Numerical Formula 1).

Light-emitting device

A compound is represented by one of formulae (11) to (13). Rto Reach 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 Rto Ris the group represented by the formula (1-1) or the like. At least one of Rto Ris the group represented by the formula (2-1), (2-2) or the like. For instance, Xrepresents an oxygen atom, a sulfur atom, or CRR, Rto Rand Rand Reach independently representing a hydrogen atom or a substituent. For instance, Rto Rand Rand Reach 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): 

Compound, material for organic electroluminescence element, organic electroluminescence element, and electronic device

A compound is represented by a formula (1) below, in which k is an integer of 0 or more, m is an integer of 1 or more, n is an integer of 2 or more. L is a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 30 ring carbon atoms, CN is a cyano group, and Dand Dare each independently represented by one of a formula (2), a formula (3) and formula (3) below, Dand Dbeing optionally mutually the same or different. 

A compound is represented by a formula (1) below, in which k is an integer of 0 or more, m is an integer of 1 or more, n is an integer of 2 or more. L is a substituted or unsubstituted aromatic hydrocarbon ring having 6 to 30 ring carbon atoms, CN is a cyano group, and Dand Dare each independently represented by one of a formula (2), a formula (3) and formula (3x) below, Dand Dbeing optionally mutually the same or different. 

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Sodegaura, Japan

Keiji Okinaka