| 摘要 |
PROBLEM TO BE SOLVED: To provide a light-emitting element with high light emission efficiency and high stability at low cost. SOLUTION: The light-emitting element uses a light-emitting material of a copper coordination compound with two cores having a partial structural formula shown by the formula (1), wherein, Cu is a copper ion, A<SB>1</SB>to A<SB>3</SB>and A'<SB>1</SB>to A'<SB>3</SB>are chosen from nitrogen atom, carbon atom, and phosphorus atom. COPYRIGHT: (C)2005,JPO&NCIPI
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