Phosphine oxide compound, organic electroluminescence element, production method and uses thereof
AssigneeShowa Denko K.K.
InventorsTakashi TERASHIMA, Katsumasa HIROSE
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Abstract
A compound having a stable deposition rate suitable for forming an electron-transporting layer of an organic El element. The compound is represented by the following formula (1): wherein in the formula (1), plural R1 are each an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a halogen atom, or a hydrogen atom, and may be the same as or different from one another; and plural Ar are each a monovalent substituted or unsubstituted aromatic group optionally containing a hetero atom, and may be the same as or different from one another.
Claims8
A compound represented by the following formula (1):
- wherein in the formula (1), plural R1 are each an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a halogen atom, or a hydrogen atom, and may be the same as or different from one another;
- and plural Ar are each a monovalent substituted or unsubstituted aromatic group optionally containing a hetero atom, and may be the same as or different from one another.
An organic electroluminescence element, comprising an anode, a luminescent layer, a phosphine oxide-containing layer and a cathode laminated in this order, the phosphine oxide-containing layer comprising a compound represented by the following formula (1):
- wherein in the formula (1), plural R1 are each an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a halogen atom, or a hydrogen atom, and may be the same as or different from one another;
- and plural Ar are each a monovalent substituted or unsubstituted aromatic group optionally containing a hetero atom, and may be the same as or different from one another.
A method for producing an organic electroluminescence element, comprising the steps of:
- forming a phosphine oxide-containing layer by depositing a compound represented by the following formula (1) on a luminescent layer formed on an anode, and
- forming a cathode on the phosphine oxide-containing layer;
- wherein in the formula (1), plural R1 are each an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a halogen atom, or a hydrogen atom, and may be the same as or different from one another;
- and plural Ar are each a monovalent substituted or unsubstituted aromatic group optionally containing a hetero atom, and may be the same as or different from one another.
Dependencies are inferred from the claim text.