LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE AND LIGHTING DEVICE

To provide a light-emitting element which is superior in heat resistance and has a high light emission efficiency, and a novel heterocycle compound which can be used for such a light-emitting element.SOLUTION: A light-emitting element comprises a layer including a first organic compound including on...

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Hauptverfasser: SEO HIROMI, HARA TOMOKA, MORIKUBO MIYAKO, YOSHIZUMI EIKO, HASHIMOTO NAOAKI, KURIHARA MIKI, SEO TETSUSHI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide a light-emitting element which is superior in heat resistance and has a high light emission efficiency, and a novel heterocycle compound which can be used for such a light-emitting element.SOLUTION: A light-emitting element comprises a layer including a first organic compound including one pyrimidine ring and one ring having a hole-transporting skeleton, a second organic compound which is an aromatic amine, and an illuminant substance capable of converting a triplet excitation energy to emission light between a pair of electrodes. The first organic compound including one pyrimidine ring and one ring having a hole-transporting skeleton, and the second organic compound which is an aromatic amine make a combination that forms an excitation complex.SELECTED DRAWING: None 【課題】耐熱性に優れ、発光効率の高い発光素子を提供する。また、このような発光素子に用いることができる、新規の複素環化合物を提供する。【解決手段】一対の電極間に、1つのピリミジン環および1つの正孔輸送性骨格を有する環を含む第1の有機化合物と、芳香族アミンである第2の有機化合物と、三重項励起エネルギーを発光に変える発光性物質と、を含む層を有することを特徴とする発光素子である。また、1つのピリミジン環および1つの正孔輸送性骨格を有する環を含む第1の有機化合物と、芳香族アミンである第2の有機化合物は、励起錯体を形成する組み合わせであることを特徴とする。【選択図】なし