Heterocyclic compounds and the use thereof in electronic and optoelectronic components
The present invention relates to the use of heterocyclic compounds as the charge transport material, blocker material or light-scattering material in electronic, optoelectronic or electroluminescent components.
1. An electronic, optoelectronic, or electroluminescent component comprising an electronically functionally active region, wherein the electronic, optoelectronic, or electroluminescent component comprises a charge transport material, light-scattering material, or blocker material, wherein the charge transport material, light-scattering material, or blocker material comprises a heterocyclic compound, wherein the heterocyclic compound has one of the following formulas A-E:
wherein
X and Y differ from one another but are otherwise selected independently from oxygen, sulfur, selenium, or tellurium; n is 1, 2, 3, 4, 5, or 6; and R 1 -R 9 are selected independently from hydrogen, alkyl, aryl, heteroaryl, anellated carbocycle, anellated heterocycle, OR′, SR′, or NR 2 ′, wherein R′ is selected independently from alkyl, aryl, heteroaryl, anellated carbocycle, or anellated heterocycle.
2. The electronic, optoelectronic, or electroluminescent component according to claim 1 , wherein the charge transport material, light-scattering material, or blocker material comprises doped or undoped hole conductors, undoped exciton blockers, or undoped electron blockers.
3. A heterocyclic compound according to one of formulas A-E:
wherein X and Y differ from one another but are otherwise selected independently from oxygen, sulfur, selenium, or tellurium; n is 1, 2, 3, 4, 5, or 6; in formula A, R 1 -R 6 are selected independently from alkyl, aryl, heteroaryl, anellated carbocycle, anellated heterocycle, OR′, NR 2 ″ or SR″; wherein for formula B, R 1 -R 6 are selected independently from alkyl, aryl, heteroaryl, anellated carbocycle, anellated heterocycle, OR′, SR′, or NR 2 ′; wherein for formulas C-E, R 1-9 are selected independently from hydrogen, alkyl, aryl, heteroaryl, anellated carbocycle, anellated heterocycle, OR′, SR′, or NR 2 ′; wherein, in each occurrence, R′ is selected independently from alkyl, aryl, heteroaryl, anellated carbocycle, or anellated heterocycle, with the proviso that in formula A, R′ is not alkyl; and wherein R″, in each occurrence, is selected independently from alkyl, aryl, heteroaryl, anellated carbocycle, or anellated heterocycle.
4. The heterocyclic compound according to claim 3 , wherein n is 1.
5. The heterocyclic compound according to claim 3 , wherein X and Y are selected from oxygen or sulfur.
6. The heterocyclic compound according to claim 3 , wherein the heterocyclic compound is selected from 5,12-dioxa-7,14-dithia-pentacene, N,N,N′,N′-tetraphenyl-5,12-dioxa-7,14-dithia-pentacene-6,13-diamine, 3,10-dimethoxy-5,12-dioxa-7,14-dithiapentacene, 5,9,16-trioxa-7,14,18-trithiaheptacene, 6,6′-bis(5,12-dioxa-7,14-dithia-pentacene), or 5,11,17-trioxa-6,12,18-trithia-trinaphthylene.
7. An organic semiconductor material comprising a charge transport layer, light-scattering layer, or blocking layer, wherein the charge transport layer, light-scattering layer, or blocking layer comprise(s) a heterocyclic compound according to claim 3 .
8. The organic semiconductor material of claim 7 , wherein the charge transport layer, light-scattering layer, or blocking layer is doped with at least one dopant.
9. An electronic, optoelectronic, or electroluminescent component comprising an electronically functionally active region, wherein the electronically active region comprises at least one heterocyclic compound of claim 3 .
10. The component according to claim 9 , wherein the heterocyclic compound is in crystallized form in an organic light-scattering layer.
11. The component according to claim 10 , wherein the light-scattering organic layer is free of polymers.
12. The component according to claim 10 , wherein the light-scattering organic layer has an optical refractive index which is greater than or equal to the optical refractive index of the light-emitting organic layer.
13. The component according to claim 10 , wherein the light-scattering organic layer has an optical refractive index in the range of about 1.5 to about 2.2.
14. The component according to claim 10 , wherein crystallites in the light-scattering organic layer are >500 nm in size on the average.
15. The electronic, optoelectronic, or electroluminescent component according to claim 10 , wherein the electronic, optoelectronic, or electroluminescent component comprises an organic light-emitting diode, a field effect transistor, a photodetector, or an organic solar cell.
16. The component according to claim 10 , wherein the light-scattering organic layer has an optical refractive index in the range of about 1.4 to about 1.8.
17. An electronic, optoelectronic, or electroluminescent component comprising an electronically functionally active region, wherein the electronic, optoelectronic, or electroluminescent component comprises at least one heterocyclic compound or mixtures of the isomers thereof in crystallized form in an organic light-scattering layer, the heterocyclic compound having a formula according to one of formulas F or G:
wherein X and Y differ from one another but are otherwise selected independently from oxygen, sulfur, selenium, or tellurium; n is 1, 2, 3, 4, 5, and R 1 -R 6 are hydrogen.