A Chemical Failure Mechanism for Aluminum(III) 8-Hydroxyquinoline Light-Emitting Devices
Source abstract
Abstract
A plausible degradation mechanism of aluminum(III) 8-hydroxyquinoline (Alq3)-based devices is presented. This is initiated by traces of moisture that facilitate a ligand exchange with the oxyquinoline moiety of Alq3, followed by a condensation polymerization of the freed 8-hydroxyquinoline (8-Hq) to produce a deep brown, nonemissive polymeric material and water (which can in turn free more 8-Hq). The polymer was found to be an efficient photoluminescence and electroluminescence quencher due to the introduction of nonemissive midgap states within the Alq3 HOMO/LUMO levels.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Organic Light-Emitting Diodes Research · Organic Electronics and Photovoltaics · Conducting polymers and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Chemistry Institute of Materials Science University of Connecticut Storrs, Connecticut, 06269
References (23)
Show source-provided references
1. Tang C. W. · J. Appl. Phys. · 1989 · 65 · 361010.1063/1.343409 ↗
2. Kido J. · Science · 1995 · 267 · 133210.1126/science.267.5202.1332 ↗
3. Tang C. W. · Appl. Phys. Lett. · 1987 · 51 · 91310.1063/1.98799 ↗
4. Adachi C. · Appl. Phys. Lett. · 1989 · 55 · 148910.1063/1.101586 ↗
5. Strukelj M. · J. Am. Chem. Soc., in press.
6. Dodabalapur A. · Appl. Phys. Lett. · 1994 · 64 · 230810.1063/1.112726 ↗
7. Abe Y. · J. Electrochem. Soc. · 1992 · 193 · 64110.1149/1.2069278 ↗
8. Burrows P. E. · Appl. Phys. Lett. · 1994 · 65 · 292210.1063/1.112532 ↗
9. Katsuta S. · Chem. Lett. · 1994 · 123910.1246/cl.1994.1239 ↗
10. Sokolik I.
11. Sonsale A. Y. · Indian J. Chem. · 1975 · 14 · 408
12. Phillips J. P. · Chem. Rev. · 1956 · 56 · 27110.1021/cr50008a003 ↗
13. Scherer P. R. · J. Anal. Chem. · 1968 · 40 · 193810.1021/ac60269a023 ↗
14. Kushi Y. · J. Am. Chem. Soc. · 1970 · 92 · 9110.1021/ja00704a015 ↗
15. Turro N. J. · 1991
16. Papadimitrakopoulos F. · ACS PMSE Prepr. · 1995 · 72 · 455
17. Wu C. · Appl. Phys. Lett. · 1995 · 66 · 65310.1063/1.114119 ↗
18. Pham M.-C. · J. Electrochem. Soc. · 1983 · 130 · 34610.1149/1.2119709 ↗
19. Ragimov A. V. · Polymer · 1989 · 30 · 185110.1016/0032-3861(89)90357-1 ↗
20. Ragimov A. V. · Polymer · 1990 · 31 · 196810.1016/0032-3861(90)90025-T ↗
21. Dalvi V. J. · J. Indian Chem. Soc. · 1951 · 28 · 366
22. Boyd D. R. · J. Chem. Soc., Perkin Trans. 1 · 1991 · 218910.1039/p19910002189 ↗
23. Papadimitrakopoulos F. · Chem. Mater. · 1994 · 6 · 156310.1021/cm00045a014 ↗