Light emitting element, light emitting device, authentication device, and electronic device
AssigneeSeiko Epson Corporation
InventorsTetsuji FUJITA, Hidetoshi YAMAMOTO
Life of this patent
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Abstract
A light emitting element including an anode, a cathode, and at least one light emitting layer that is interposed between the anode and the cathode and is at least involved in light-emission function, wherein at least one of the light emitting layer contains at least one organic compound having a basic skeleton represented by the following formulae (I) to (III) and a compound represented by the following formula (IV). In formulae (I) to (III), R1 and R2 are identical to or different from each other independently represent an alkyl group, a substituted or unsubstituted aryl group, an amino group or a heterocyclic group, Wherein formula (IV) represents Pt (II) tetraphenyl-tetrabenzo-porphyrin.
Claims14
A light emitting element comprising:
- an anode;
- a cathode;
- and
- a light emitting layer that is interposed between the anode and the cathode and emits light through electric connection between the anode and the cathode,
- wherein the light-emitting layer contains a light-emitting material and a host material, the host material is at least one selected from organic substances having a basic skeleton represented by formulae (I) to (III), and the light-emitting material is a compound represented by formula (IV),
- In formula (I), wherein R1 and R2 are identical to or different from each other independently represent an alkyl group, a substituted or unsubstituted aryl group, an amino group or a heterocyclic group,
- In formula (II), wherein R1 and R2 are identical to or different from each other independently represent an alkyl group, a substituted or unsubstituted aryl group, an amino group or a heterocyclic group,
- In formula (III), R1 and R2 are identical to or different from each other independently represent an alkyl group, a substituted or unsubstituted aryl group, an amino group or a heterocyclic group,
- wherein formula (IV) represents Pt (II) tetraphenyl-tetrabenzo-porphyrin.
A light emitting element comprising:
- an anode;
- a cathode;
- a light emitting layer that is interposed between the anode and the cathode and emits light through electric connection between the anode and the cathode,
- an electron transfer layer having electron transfer property, provided between the cathode and the light emitting layer such that the electron transfer layer contacts the light emitting layer,
- wherein the light-emitting layer contains a light emitting material and a host material, the light emitting material comprises a compound represented by the following formula (IV) as a light emitting material, and the electron transfer layer contains a compound having azaindolizine skeletons and anthracene skeletons in the molecule as an electron transfer material,
- wherein formula (IV) represents Pt (II) tetraphenyl-tetrabenzo-porphyrin.
Dependencies are inferred from the claim text.