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DPEPO, with steric ortho-substituted diphenylphosphine oxide (DPPO) groups, is one of the most popular large band-gap materials used to host blue TADF-based OLEDs.
This substitution with electron-withdrawing DPPO moieties not only improves its thermal and morphological stability, but also makes DPEPO an electron-transport layer material. Because of its deep HOMO energy level, DPEPO also acts as a hole-blocking layer material in TADF-OLED devices.
Triplet exciton confinement in green organic light-emitting diodes containing luminescent charge-transfer Cu(I) complexes, Q. Zhang, et al., Adv. Funct. Mater.22, 2327–2336 (2012); DOI: 10.1002/adfm.201101907.
Highly Efficient Simplified Single-Emitting-Layer Hybrid WOLEDs with Low Roll-off and Good Color Stability through Enhanced Förster Energy Transfer, D. Zhang et al., ACS Appl. Mater. Interfaces, 7 (51), 28693–28700 (2015); DOI: 10.1021/acsami.5b10783.
High-Efﬁciency Blue Organic Light-Emitting Diodes Based on Thermally Activated Delayed Fluorescence from Phenoxaphosphine and Phenoxathiin Derivatives, S. Lee et al., Adv. Mater., 28, 4626–4631 (2016); DOI: 10.1002/adma.201506391.
High-efficiency deep-blue organic light-emitting diodes based on a thermally activated delayed fluorescence emitter, S. Wu et al., J. Mater. Chem. C, 2,421 (2014); DOI: 10.1039/c3tc31936a.
Design Strategy for 25% External Quantum Efﬁ ciency in Green and Blue Thermally Activated Delayed Fluorescent Devices, D. Lee et al., Adv. Mater. 2015, 27, 5861–5867 (2015); DOI: 10.1002/adma.201502053.
To the best of our knowledge the information provided here is accurate. However, Ossila assume no liability for the accuracy of this page. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. All products are for laboratory and research and development use only, and may not be used for any other purpose including health care, pharmaceuticals, cosmetics, food or commercial applications.