Thiadiazole-based compound, light emitting element compound, light emitting element, light emitting device, authentication device, and electronic device
Provided is a thiadiazole compound with high efficiency and long life which emits light in a near-infrared region and represented by Formula (I). [In the Formula (I), As each independently represent an aryl group which may have a substituent or a diarylamino group.]
1. A thiadiazole-based compound represented by following Formula (6),
wherein, in Formula (6), R independently represent a hydrogen atom, an alkyl group, or an aryl group which may have a substituent, adjacent carbons in two Rs may be connected and form a cyclic shape.
2. A light emitting element compound comprising:
the thiadiazole-based compound according to claim 1 .
3. A light emitting element comprising:
an anode,
a cathode, and
a light emitting layer that is installed between the anode and the cathode and emits light by applying an electric voltage between the anode and the cathode, wherein
the light emitting element emits light in a near-infrared region,
the light emitting layer comprises a compound represented by following Formula (1) as a light emitting material,
wherein, in the Formula (1), A independently comprises a diarylamino group, and
each B independently represents a phenyl group, and
the light emitting layer further comprises a compound represented by following Formula IRH-1 as a host material,
wherein, in the Formula IRH-1,
n represents a natural number of 1 to 12, and
R represents a substituent or a functional group, wherein
each R is independently selected from a hydrogen atom, an alkyl group, an aryl group, or an arylamino group.
4. The light emitting element according to claim 3 ,
wherein the light emitting layer further comprises a compound represented by following Formula IRH-2 as a host material,
wherein, in the Formula IRH-2, R 1 to R 4 each independently represent a hydrogen atom, an alkyl group, an aryl group that may have a substituent, or an arylamino group.
5. The light emitting element according to claim 3 ,
wherein the light emitting layer further comprises a compound represented by following Formula IRH-3 as a host material,
wherein, in the Formula IRH-3, R 1 and R 2 each independently represent a hydrogen atom, an alkyl group, an aryl group that may have a substituent or an arylamino group.
6. The light emitting element according to claim 3 , further comprising:
an electron transport layer that is installed between the anode and the light emitting layer, is in contact with the light emitting layer and has an electron transport property,
wherein the electron transport layer comprises a compound having an azaindolizine skeleton and an anthracene skeleton within a molecule as an electron transporting material.
7. The light emitting element according to claim 6 ,
wherein, as the electron transporting material, the number of the azaindolizine skeletons and the anthracene skeletons included within one molecule is one or two, respectively.
8. The light emitting element according to claim 6 ,
wherein the electron transport layer comprises a first electron transport layer that comprises the compound having the azaindolizine skeleton and the anthracene skeleton within the molecule as a first electron transporting material, and a second electron transport layer that is installed between the first electron transport layer and the light emitting layer, is in contact with both of these layers and comprises a second electron transporting material that is different from the first electron transporting material.
9. A light emitting device comprising:
the light emitting element according to claim 3 .
10. An authentication device comprising:
the light emitting element according to claim 3 .
11. An electronic device comprising:
the light emitting element according to claim 3 .
12. The light emitting element according to claim 3 , wherein
the compound represented by Formula IRH-1 is a compound of Formula H1-5 as a host material that contains the light emitting material
13. The light emitting element according to claim 3 , wherein
the compound represented by Formula IRH-1 is a compound of Formula H1-2 as a host material that contains the light emitting material
14. The light emitting element according to claim 5 , wherein
the compound represented by Formula IRH-1 is a compound of Formula H1-13 as a host material that contains the light emitting material
15. The light emitting element according to claim 3 , wherein
the compound represented by Formula (1) is a compound of Formula D-2 or D-3 as a light emitting material