Organic electroluminescence device and electronic apparatus provided with the same
An organic electroluminescence device including a cathode, an anode, and an emitting layer disposed between the cathode and the anode, wherein the emitting layer includes a compound represented by the following formula (1) and one or more compounds selected from the group consisting of compounds represented by formulas (11), (21), (31), (41), (51), (61), (71) and (81). In the formula (1), at least one of R 1 to R 8 is a deuterium atom.
1. An organic electroluminescence device comprising:
a cathode,
an anode, and
an emitting layer disposed between the cathode and the anode, wherein
the emitting layer contains a compound represented by the formula (43D), and one or more selected from the group consisting of a compound represented by the formula (1A) and a compound represented by the formula (1B):
wherein in the formula (1A) and (1B),
R 1A to R 8A are all deuterium atoms;
L 1A and L 2A are independently a single bond, an unsubstituted phenylene group, or an unsubstituted naphthylene group;
Ar 1A is a substituted or unsubstituted phenyl group or a substituted or unsubstituted naphthyl group, and the substituent for Ar 1A is a phenyl group;
R 11A to R 14A are independently a hydrogen atom, an unsubstituted aryl group including 6 to 50 ring carbon atoms; and
two or more adjacent groups of R 11A to R 14A do not form a ring;
wherein in the formula (43D),
R 4611 is a hydrogen atom, an unsubstituted alkyl group including 1 to 6 carbon atoms, an unsubstituted cycloalkyl group including 3 to 10 ring carbon atoms, —Si(R 911 )(R 912 )(R 913 ), or —N(R 914 )(R 915 );
R 4612 to R 4615 are independently an unsubstituted alkyl group including 1 to 6 carbon atoms, an unsubstituted cycloalkyl group including 3 to 10 ring carbon atoms, or —Si(R 911 )(R 912 )(R 913 );
R 911 to R 913 are independently an unsubstituted alkyl group including 1 to 6 carbon atoms or an unsubstituted aryl group including 6 to 18 ring carbon atoms; and
R 914 to R 915 are independently an unsubstituted aryl group including 6 to 18 ring carbon atoms.
2. The organic electroluminescence device according to claim 1 , wherein in the formula (1A) or (1B), at least one hydrogen atom contained in Ar 1A is a deuterium atom.
3. The organic electroluminescence device according to claim 1 , wherein in the formula (1A) or (1B), R 11A to R 14A are hydrogen atoms.
4. The organic electroluminescence device according to claim 1 , wherein in the formula (1A) or (1B), R 11A to R 14A are deuterium atoms.
5. The organic electroluminescence device according to claim 1 , wherein in the emitting layer, based on the total of the compound represented by the formula (1A) or (1B) and a compound having the same structure as the compound represented by the formula (1A) or (1B) except that the compound represented by the formula (1A) or (1B) contains only protium atoms as hydrogen atoms, the content ratio of the latter is 99 mol % or less.
6. The organic electroluminescence device according to claim 1 , wherein in the formula (43D), R 4611 is a hydrogen atom, an unsubstituted alkyl group including 1 to 6 carbon atoms, or —N(R 914 )(R 915 ).
7. The organic electroluminescence device according to claim 1 , wherein in the formula (43D), R 4612 to R 4615 are independently an unsubstituted alkyl group including 1 to 6 carbon atoms, or an unsubstituted cycloalkyl group including 3 to 10 ring carbon atoms.
8. The organic electroluminescence device according to claim 1 , wherein in the formula (43D), R 4611 is —N(R 914 )(R 915 ), and R 4612 to R 4615 are independently an unsubstituted alkyl group including 1 to 6 carbon atoms.
9. The organic electroluminescence device according to claim 1 , wherein in the formula (43D), R 4611 is an unsubstituted alkyl group including 1 to 6 carbon atoms, and R 4612 to R 4615 are independently an unsubstituted alkyl group including 1 to 6 carbon atoms.
10. The organic electroluminescence device according to claim 1 , wherein in the formula (43D), R 4611 is a hydrogen atom, and R 4612 to R 4615 are independently an unsubstituted alkyl group including 1 to 6 carbon atoms, or an unsubstituted cycloalkyl group including 3 to 10 ring carbon atoms.
11. The organic electroluminescence device according to claim 1 , wherein in the formula (43D), at least one of the hydrogen atoms included in one or more selected from the group consisting of R 914 and R 915 is a deuterium atom.
12. The organic electroluminescence device according to claim 1 , wherein the compound represented by the formula (1A) or (1B) is one or more selected from the group consisting of the compound represented by the formula BH-1, BH-2, BH-3, and BH-5˜BH-17, and the compound represented by the formula (43D) is one or more selected from the group consisting of the compound represented by the formula BD-9, BD-10, BD-11 and BD-12
13. The organic electroluminescence device according to claim 1 , which further comprises a hole-transporting layer between the anode and the emitting layer.
14. The organic electroluminescence device according to claim 1 , which further comprises an electron-transporting layer between the cathode and the emitting layer.
15. An electronic apparatus wherein the organic electroluminescence device according to claim 1 is provided.
16. The organic electroluminescence device according to claim 1 , wherein the emitting layer contains the compound represented by the formula (1A) or (1B) and a compound having the same structure as the compound represented by formula (1A) or (1B) except that the compound contains only protium atoms as hydrogen atoms, and the content ratio of the compound represented by formula (1A) or (1B) to the total content of the compound represented by the formula (1A) or (1B) and the compound having the same structure as the compound represented by formula (1A) or (1B) except that the compound contains only protium atoms as hydrogen atoms is 30 mol % or more.