Organic electroluminescent device
AssigneeHodogaya Chemical Co., Ltd.
InventorsShuichi HAYASHI, Naoaki KABASAWA, Keigo NAITO
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Abstract
The present invention provides an organic EL device having at least an anode, a first hole transport layer, a second hole transport layer, a luminous layer, an electron transport layer, and a cathode in this order, wherein the second hole transport layer contains an arylamine compound represented by the following general formula (1), and the electron transport layer contains a pyrimidine derivative represented by the following general formula (2). The organic EL device of the present invention has a high efficiency, and is driven at a low driving voltage. Further, it has a particularly long lifetime.
Claims12
An organic electroluminescent device having at least an anode, a first hole transport layer, a second hole transport layer, a luminous layer, an electron transport layer, and a cathode in this order, wherein
- the second hole transport layer contains an arylamine compound represented by the following general formula (1), and
- the electron transport layer contains a pyrimidine derivative represented by the following general formula (2):
- where
- Ar1 to Ar4 may be identical or different, and each represents an aromatic hydrocarbon group, an aromatic heterocyclic group, or a condensed polycyclic aromatic group, and
- n1 denotes an integer of 1 to 4;
- where
- Ar5 and Ar6 may be identical or different, and each represents an aromatic hydrocarbon group, an aromatic heterocyclic group, or a condensed polycyclic aromatic group,
- Ar7 represents a hydrogen atom, an aromatic hydrocarbon group, an aromatic heterocyclic group, or a condensed polycyclic aromatic group,
- A1 and A2 may be identical or different, and each represents a divalent group of an aromatic hydrocarbon, or a divalent group of a condensed polycyclic aromatic,
- A3 represents a divalent group of an aromatic hydrocarbon, a divalent group of a condensed polycyclic aromatic, or a single bond, and
- B represents an aromatic heterocyclic group.
Dependencies are inferred from the claim text.