Organic electroluminescent compound and organic photoelectric apparatus thereof
The present disclosure provides a nitrogen-containing heterocyclic compound having general formula (I) and an organic photoelectric apparatus thereof. where A 1 , A 2 , A 3 , A 4 , A 5 , A 6 , A 7 , and A 8 are independently selected from a hydrogen atom, at least one compound having the general formula (II) and at least one compound having the general formula (III), where Y 1 , Y 2 , and Y 3 are independently selected from C and N; R 3 and R 4 are independently selected from C 6-30 aromatic group and C 2-30 heterocyclic aromatic group, wherein X is selected from any one of oxyl group (—O—), sulfhydryl group (—S—), substituted or non-substituted imino group, substituted or non-substituted methylene group, and substituted or non-substituted silicylene group; R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , and R 12 are independently selected from hydrogen, deuterium, C 1-30 alkyl group, C 6-30 aromatic group, or C 2-30 heterocyclic aromatic group.
1. An organic photoelectric apparatus, comprising:
an anode substrate;
at least one organic layer formed over the anode substrate; and
a cathode layer formed over the at least one organic layer,
wherein the at least one organic layer includes at least one nitrogen-containing heterocyclic compound having a general formula (I):
wherein A 1 , A 2 , A 3 , A 4 , A 5 , A 6 , A 7 , and A 8 are independently selected from a group consisting of a hydrogen atom, a compound having a general formula (II) and a compound having a general formula (III); and A 1 , A 2 , A 3 , A 4 , A 5 , A 6 , A 7 , and A 8 include at least one compound having the general formula (II) and at least one compound having the general formula (III),
the general formula (II) being:
wherein Y 1 , Y 2 , and Y 3 are independently selected from a group consisting of C and N; R 3 and R 4 are independently selected from a group consisting of C 6-30 aromatic group and C 2-30 heterocyclic aromatic group, and
the general formula (III) being:
wherein X is selected from a group consisting of any one of oxyl group (—O—), sulfhydryl group (—S—), substituted or non-substituted imino group, substituted or non-substituted methylene group, and substituted or non-substituted silicylene group; R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , and R 12 are independently selected from a group consisting of hydrogen, deuterium, C 1-30 alkyl group, C 6-30 aromatic group, and C 2-30 heterocyclic aromatic group.
2. The organic photoelectric apparatus according to claim 1 , wherein the at least one organic layer comprises:
at least one light-emitting layer; and
the at least one light-emitting layer includes the at least one nitrogen-containing heterocyclic compound.
3. The organic photoelectric apparatus according to claim 2 , wherein the at least one organic layer comprises:
at least one selected from a group consisting of a hole transport layer, a hole injection layer, a hole barrier layer, an electron transport layer, an electron injection layer and an electron barrier layer.
4. The organic photoelectric apparatus according to claim 2 , wherein:
the at least one nitrogen-containing heterocyclic compound is used as one selected from a group consisting of a host material, a doping material and a co-doping material of the at least one light-emitting layer.
5. The organic photoelectric apparatus according to claim 4 , wherein:
the at least one nitrogen-containing heterocyclic compound is the host material of the at least one light-emitting layer.
6. The organic photoelectric apparatus according to claim 1 , wherein:
an energy level difference (ΔEst) between a lowest singlet state S 1 and a lowest triplet state T 1 of the at least one nitrogen-containing heterocyclic compound is smaller than or equal to approximately 0.30 eV.
7. A method for fabricating an organic photoelectric apparatus, comprising:
providing an anode substrate,
forming at least one organic layer over the anode substrate; and
forming a cathode layer over the at least one organic layer,
wherein the at least one organic layer includes at least one nitrogen-containing heterocyclic compound having a general formula (I):
wherein A 1 , A 2 , A 3 , A 4 , A 5 , A 6 , A 7 , and A 8 are independently selected from a group consisting of a hydrogen atom, a compound having a general formula (II) and a compound having a general formula (III); and A 1 , A 2 , A 3 , A 4 , A 5 , A 6 , A 7 , and A 8 include at least one compound having the general formula (II) and at least one compound having the general formula (III),
the general formula (II) being:
wherein Y 1 , Y 2 , and Y 3 are independently selected from a group consisting of C and N; R 3 and R 4 are independently selected from a group consisting of C 6-30 aromatic group and C 2-30 heterocyclic aromatic group, and
the general formula (III) being:
wherein X is selected from a group consisting of any one of oxyl group (—O—), sulfhydryl group (—S—), substituted or non-substituted imino group, substituted or non-substituted methylene group, and substituted or non-substituted silicylene group; R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , and R 12 are independently selected from a group consisting of hydrogen, deuterium, C 1-30 alkyl group, C 6-30 aromatic group, and C 2-30 heterocyclic aromatic group.
8. The method according to claim 7 , wherein the at least one organic layer comprises:
at least one light-emitting layer; and
the at least one light-emitting layer includes the at least one nitrogen-containing heterocyclic compound.
9. The method according to claim 7 , wherein forming the at least one organic layer comprises:
forming a hole transport layer on the anode substrate;
forming a light-emitting layer on the hole transport layer;
forming a hole barrier layer on the light-emitting layer;
forming an electron transport layer on the hole barrier layer; and
forming an electron injection layer on the electron transport layer.
10. The method according to claim 7 , wherein:
the at least one nitrogen-containing heterocyclic compound is used as one selected from a group consisting of a host material, a doping material and a co-doping material of the at least one light-emitting layer.
11. The method according to claim 7 , wherein:
the at least one organic layer is formed by an evaporation process.
12. The organic photoelectric apparatus according to claim 1 , wherein the compound having the general formula (II) comprises one selected from a group consisting of:
wherein R 3 and R 4 are independently selected from a group consisting of substituted or non-substituted phenyl group, substituted or non-substituted pyridyl group, substituted or non-substituted pyrimidyl group, and substituted or non-substituted triazinyl group.
13. The organic photoelectric apparatus according to claim 1 , wherein the compound having the general formula (II) is one selected from a group consisting of:
14. The organic photoelectric apparatus according to claim 1 , wherein the X in the compound having the general formula (III) is one selected from a group consisting of:
—O—, —S—, —NH—, —N(CH 3 )—,
—CH 2 —, —C(CH 3 ) 2 —, —CH(CH 3 )—,
—SiH 2 —, —Si(CH 3 ) 2 —, —SiH(CH 3 )—,
15. The organic photoelectric apparatus according to claim 1 , wherein:
R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 and R 12 are all hydrogen.
16. The organic photoelectric apparatus according to claim 1 , wherein the compound having the general formula (III) is one selected from a group consisting of:
17. The organic photoelectric apparatus according to claim 1 , wherein the at least one nitrogen-containing heterocyclic compound comprising one selected from a group consisting of:
18. The method according to claim 7 , wherein the compound having the general formula (II) comprises one selected from a group consisting of:
wherein R 3 and R 4 are independently selected from a group consisting of substituted or non-substituted phenyl group, substituted or non-substituted pyridyl group, substituted or non-substituted pyrimidyl group, and substituted or non-substituted triazinyl group.
19. The method according to claim 7 , wherein the compound having the general formula (III) is one selected from a group consisting of:
20. The method according to claim 7 , wherein the at least one nitrogen-containing heterocyclic compound comprising one selected from a group consisting of: