Increased Electromer Formation and Charge Trapping in Solution-Processed versus Vacuum-Deposited Small Molecule Host Materials of Organic Light-Emitting Devices
Source abstract
Abstract
We investigate and compare between organic light-emitting devices (OLEDs) fabricated by solution-coating versus vacuum-deposition. Electroluminescence, photoluminescence, and chromatographic measurements on typical OLED host materials reveal significant electromer formation in layers fabricated by solution-processing, pointing to stronger intermolecular interactions in these systems. Delayed electroluminescence measurements reveal that solution-processed layers also have increased charge traps. The findings provide insights on the morphological differences between solution-processed and vacuum-deposited materials and shed light on the root causes behind the lower electroluminescence stability of solution-processed OLEDs.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Organic Light-Emitting Diodes Research · Organic Electronics and Photovoltaics · Thin-Film Transistor Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Electrical & Computer Engineering and Waterloo Institute for Nanotechnology (WIN) and †Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2G 3G1, Canada
Funding
Government of Canada
References (41)
Show source-provided references
1. 10.1126/science.267.5202.133210.1126/science.267.5202.1332 ↗
2. 10.1038/nature0464510.1038/nature04645 ↗
3. 10.1038/nmat444610.1038/nmat4446 ↗
4. 10.1038/nature0800310.1038/nature08003 ↗
5. 10.1126/science.120299210.1126/science.1202992 ↗
6. 10.1038/nature0249810.1038/nature02498 ↗
7. Minakata T. · 2016 · 1
8. 10.1002/adma.20090114110.1002/adma.200901141 ↗
9. 10.1038/nphoton.2009.13310.1038/nphoton.2009.133 ↗
10. 10.1126/sciadv.160142810.1126/sciadv.1601428 ↗
11. 10.1039/c0jm01163k10.1039/c0jm01163k ↗
12. 10.1016/j.orgel.2013.01.02510.1016/j.orgel.2013.01.025 ↗
13. 10.1016/j.orgel.2011.07.00410.1016/j.orgel.2011.07.004 ↗
14. 10.1002/adma.20130626610.1002/adma.201306266 ↗
15. 10.1002/adfm.20150299510.1002/adfm.201502995 ↗
16. 10.1002/adfm.20160354210.1002/adfm.201603542 ↗
17. 10.1021/acsami.6b1506210.1021/acsami.6b15062 ↗
18. 10.1002/adfm.20080104510.1002/adfm.200801045 ↗
19. 10.1039/b926348a10.1039/b926348a ↗
20. 10.1021/jp412614k10.1021/jp412614k ↗
21. 10.1063/1.243092210.1063/1.2430922 ↗
22. 10.1063/1.307716310.1063/1.3077163 ↗
23. 10.1063/1.153123110.1063/1.1531231 ↗
24. 10.1063/1.315168910.1063/1.3151689 ↗
25. 10.1063/1.288453010.1063/1.2884530 ↗
26. 10.1002/adfm.20130384010.1002/adfm.201303840 ↗
27. 10.1002/adom.20140064010.1002/adom.201400640 ↗
28. 10.1021/acsami.6b0294610.1021/acsami.6b02946 ↗
29. 10.1021/am402537j10.1021/am402537j ↗
30. 10.1021/acsami.7b0143210.1021/acsami.7b01432 ↗
31. 10.1063/1.193747210.1063/1.1937472 ↗
32. 10.1002/adfm.20090232910.1002/adfm.200902329 ↗
33. 10.1002/adma.20030583810.1002/adma.200305838 ↗
34. 10.1088/1674-1056/19/3/03780110.1088/1674-1056/19/3/037801 ↗
35. 10.1016/j.cplett.2009.11.00510.1016/j.cplett.2009.11.005 ↗
36. 10.1016/j.synthmet.2010.07.02410.1016/j.synthmet.2010.07.024 ↗
37. 10.1021/jp802821510.1021/jp8028215 ↗
38. 10.1063/1.235700810.1063/1.2357008 ↗
39. 10.1021/cm970599a10.1021/cm970599a ↗
40. 10.1039/C5TC01911G10.1039/C5TC01911G ↗
41. 10.1016/j.orgel.2011.12.02210.1016/j.orgel.2011.12.022 ↗