The exploration of acceptor ratio in thermally activated delayed fluorescent donor for the effect on exciplex OLED
Source abstract
Abstract
Abstract The effect of PO-T2T acceptor ratio in thermally activated delayed fluorescent donor of DMAC-DPS on exciplex organic light-emitting diodes (OLED) performance is explored herein. As the ratio decrease of PO-T2T acceptor, we found an obvious blue shift of electroluminescence (EL) spectra from 536 nm to 496 nm, while the EL efficiency maintain a high level with maximum current efficiency of 25.7–38.1 cd/A, power efficiency of 24.2–39.5 l m/W and external quantum efficiency (EQE) of 10.4–12.1%, respectively. That means a wide spectral move range of 40 nm without damaging device EQE in exciplex OLED could be realized. The strong interaction between exciplex induced from charge separation is responsible for the blue shift as acceptor ratio reduce.
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 (24)
Show source-provided references
1. Efficient organic light-emitting diodes through up-conversion from triplet to singlet excited states of exciplexes10.1063/1.4737006 ↗
2. Organic light-emitting diodes employing efficient reverse intersystem crossing for triplet-to-singlet state conversion10.1038/nphoton.2012.31 ↗
3. Thermally activated delayed fluorescence from Sn4+-porphyrin complexes and their application to organic light emitting diodes-a novel mechanism for electroluminescence10.1002/adma.200900983 ↗
4. High-efficiency deep-blue organic light-emitting diodes based on a thermally activated delayed fluorescence emitter10.1039/C3TC31936A ↗
5. Highly efficient organic light-emitting diodes from delayed fluorescence10.1038/nature11687 ↗
6. High efficiency and low roll-off green OLEDs with simple structure by utilizing thermally activated delayed fluorescence material as the universal host10.1515/nanoph-2016-0177 ↗
7. Triplet collection for highly efficient single-emitting-layer pure fluorescent WOLED based thermally activated delayed fluorescent host of acridine/sulfone derivative10.1016/j.optmat.2020.110510 ↗
8. Efficient triplet harvesting by fluorescent molecules through exciplexes for high efficiency organic light-emitting diodes10.1063/1.4802716 ↗
9. Highly efficient bilayer interface exciplex for yellow organic light-emitting diode10.1021/am402032z ↗
10. Exciplex emission and decay of co-deposited 4,4′,4″-tris[3-methylphenyl(phenyl)amino]triphenylamine: tris-[3-(3-pyridyl)mesityl]borane organic light-emitting devices with different electron transporting layer thicknesses10.1063/1.4870492 ↗
11. The first tandem, all-exciplex-based WOLED10.1038/srep05161 ↗
12. High color stability and CRI (>80) fluorescent white organic light-emitting diode based pure emission of exciplexes by employing merely complementary colors10.1039/C7TC05196D ↗
13. The application of charge transfer host based exciplex and thermally activated delayed fluorescence materials in organic light-emitting diodes10.1016/j.orgel.2018.12.039 ↗
14. Realizing 20% external quantum efficiency in electroluminescence with efficient thermally activated delayed fluorescence from an exciplex10.1021/acsami.8b18284 ↗
15. Efficient exciplex emission from intramolecular charge transfer material10.1016/j.orgel.2015.06.017 ↗
16. Novel strategy to develop exciplex emitters for high-performance OLEDs by employing thermally activated delayed fluorescence materials10.1002/adfm.201505014 ↗
17. Structural design for highly efficient pure fluorescent warm WOLEDs by employing TADF molecule as blue emitter and exciplex donor10.1016/j.orgel.2019.05.052 ↗
18. Highly efficient exciplex organic light-emitting diodes by exciplex dispersion in the thermally activated delayed fluorescence host10.1016/j.orgel.2019.105477 ↗
19. An exciplex forming host for highly efficient blue organic light emitting diodes with low driving voltage10.1002/adfm.201402707 ↗
20. Sky-blue phosphorescent OLEDs with 34.1% external quantum efficiency using a low refractive index electron transporting layer10.1002/adma.201506065 ↗
21. Efficient blue organic light-emitting diodes employing thermally activated delayed fluorescence10.1038/nphoton.2014.12 ↗
22. Highly efficient simplified single-emitting-layer hybrid WOLEDs with low roll-off and good color stability through enhanced Förster energy transfer10.1021/acsami.5b10783 ↗
23. TADF material with non-conjugated rigid donor for high-performance full-color phosphorescent OLEDs: effects of triplet harvest and charge transport on efficiency10.1016/j.orgel.2020.105826 ↗
24. The role of charge balance and excited state levels on device performance of exciplex-based phosphorescent organic light emitting diodes10.1038/s41598-017-12059-2 ↗