Organic compound, light-emitting element, light-emitting device, electronic device, and lighting device
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsKyoko Takeda, Harue Osaka, Yusuke Takita, Naoaki Hashimoto, Tsunenori Suzuki, Kunihiko Suzuki, Satoshi Seo
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Abstract
To provide a novel fluorescent organic compound (a fluorescent compound). The organic compound is a substance that emits fluorescence and an organic compound (a host material) in which TTA can occur efficiently. In the organic compound, triplet excitons, which do not contribute to light emission, can be efficiently converted into singlet excitons. The use of such an organic compound can increase emission efficiency of a light-emitting element.
Claims17
An organic compound represented by General Formula (G):
- wherein either of A1 and A2 is represented by General Formula (G-1) and the other is hydrogen or another substituent,
- wherein the another substituent represents an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, an alkylphenyl group, or a phenyl group,
- wherein α1 and α2 each independently represent a substituted or unsubstituted phenylene group,
- wherein n and m each independently represent 1 or 2, and
- wherein P1 and P2 each independently represent hydrogen, a substituted or unsubstituted phenylene group, or a substituted or unsubstituted biphenylene group.
An organic compound represented by General Formula (F-1):
- wherein either of A1 and A2 is a substituent represented by General Formula (G-1) and the other is hydrogen or another substituent,
- wherein the another substituent represents an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, an alkylphenyl group, or a phenyl group,
- wherein α1 and α2 each independently represent a substituted or unsubstituted phenylene group, and
- wherein n and m each independently represent 1 or 2.
An organic compound represented by General Formula (F-2):
- wherein either of A1 and A2 is a substituent represented by General Formula (G-1) and the other is hydrogen or another substituent,
- wherein the another substituent represents an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, an alkylphenyl group, or a phenyl group,
- wherein α1 and α2 each independently represent a substituted or unsubstituted phenylene group,
- wherein n and m each independently represent 1 or 2, and
- wherein P1 and P2 each independently represent hydrogen, a substituted or unsubstituted phenylene group, or a substituted or unsubstituted biphenylene group.
Dependencies are inferred from the claim text.