High-performance hybrid white organic light-emitting diodes with bipolar host material and thermally activated delayed fluorescent emitter
Source abstract
Abstract
Abstract Bipolar host material and thermally activated delayed fluorescent (TADF) emitter were used in hybrid white organic light-emitting diodes (OLEDs) with the aim to achieve high performance. First of all, the single color OLEDs was optimized by changing the thickness of hole transporting layer, electron transporting layer and the doping concentration of emission material. Then, white organic light-emitting diodes (WOLEDs) were fabricated on the basis of the former single color OLEDs by modifying the doping concentration of TADF emitter. Finally, an optimized white device shows the best results of 43.67 cd/A, 45.73 lm/W and 18.52% for current efficiency, power efficiency and external quantum efficiency, respectively. This research may supply a theoretical basis for the development of WOLEDs.
Source: openaire · Quality: candidate unverified · Source record ↗
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.
References (26)
Show source-provided references
1. White organic light-emitting diodes with fluorescent tube efficiency10.1038/nature08003 ↗
2. Highly efficient organic blue‐and white‐light‐emitting devices having a carrier‐and exciton‐confining structure for reduced efficiency roll‐off10.1002/adma.200801375 ↗
3. Extremely efficient white organic light‐emitting diodes for general lighting10.1002/adfm.201402026 ↗
4. Aminoborane-based bipolar host material for blue and white-emitting electrophosphorescence devices10.1016/j.orgel.2017.05.034 ↗
5. m-Indolocar bazole derivative as a universal host material for RGB and white phosphorescent OLEDs10.1002/adfm.201502079 ↗
6. A carbazole-phenylbenzimidazole hybrid bipolar universal host for high efficiency RGB and white PhOLEDs with high chromatic stability10.1039/c1jm14029a ↗
7. Novel blue bipolar thermally activated delayed fluorescence material as host emitter for high-efficiency hybrid warm-white OLEDs with stable high color-rendering index10.1002/adfm.201707002 ↗
8. Highly efficient simplified single-emitting-layer hybrid WOLEDs with low roll-off and good color stability through enhanced förster energy transfer10.1021/acsami.5b10783 ↗
9. Highly efficient and color-stable hybrid warm white organic light-emitting diodes using a blue material with thermally activated delayed fluorescence10.1039/C4TC01289E ↗
10. Highly efficient hybrid warm white organic light-emitting diodes using a blue thermally activated delayed fluorescence emitter: exploiting the external heavy-atom effect10.1038/lsa.2015.5 ↗
11. Structural optimizing carrier recombination for efficient blue phosphorescence organic light-emitting diode with ambipolar host10.1109/JSTQE.2015.2480375 ↗
12. Carbazole-based coplanar molecule (CmInF) as a universal host for multi-color electrophosphorescent devices10.1039/C1JM13794H ↗
13. A highly efficient universal bipolar host for blue, green, and red phosphorescent OLEDs10.1002/adma.201000061 ↗
14. A universal host material for high external quantum efficiency close to 25% and long lifetime in green fluorescent and phosphorescent OLEDs10.1002/adma.201400347 ↗
15. Efficient blue organic light-emitting diodes employing thermally activated delayed fluorescence10.1038/nphoton.2014.12 ↗
16. High efficiency deep-blue phosphorescent organic light-emitting diodes with CIE x, y (≤ 0.15) and low efficiency roll-off by employing a high triplet energy bipolar bost material10.1002/adfm.201802945 ↗
17. Simple bipolar molecules constructed from biphenyl moieties as host materials for deep-blue phosphorescent organic light-emitting diodes10.1002/chem.201103703 ↗
18. C1-linked spirobifluorene dimers: pure hydrocarbon hosts for high-performance blue phosphorescent OLEDs10.1002/anie.201813604 ↗
19. An ‘ideal’ universal host for highly efficient full-color, white phosphorescent and thermally activated delayed fluorescent OLEDs with extremely simple and unified structure10.1039/C7TC04149G ↗
20. A single phosphine oxide host for high-efficiency white organic light-emitting diodes with extremely low operating voltages and reduced efficiency roll-off10.1002/adma.201100322 ↗
21. Highly efficient phosphorescent organic light-emitting diodes based on single-layer structure10.1364/OL.44.001722 ↗
22. Thermally activated delayed fluorescence polymers for efficient solution-processed organic light-emitting diodes10.1002/adma.201505026 ↗
23. Creating a thermally activated delayed fluorescence channel in a single polymer system to enhance exciton utilization efficiency for bluish-green electroluminescence10.1039/C5CC09797E ↗
24. High-efficiency sky-blue organic light-emitting diodes utilizing thermally-activated delayed fluorescence10.1587/transele.E98.C.971 ↗
25. Transient analysis of organic electrophosphorescence. II. Transient analysis of triplet-triplet annihilation10.1103/PhysRevB.62.10967 ↗
26. Triazatruxene: a rigid central donor unit for a D-A3 thermally activated delayed fluorescence material exhibiting sub‐microsecond reverse intersystem crossing and unity quantum yield via multiple singlet-triplet state pairs10.1002/advs.201700989 ↗