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ChemRxiv - Welch - PDI OLED Emtting Layer Optimization - Final.pdf (1.33 MB)
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Red Organic Light-Emitting-Diodes based on a N-Annulated Perylene Diimide Dimer

preprint
submitted on 18.10.2019 and posted on 23.10.2019 by Sergey V. Dayneko, Mohammad Rahmati, Majid Pahlevani, Gregory Welch

In this contribution we report on solution processed red OLEDs based upon a N-annulated perylene diimide dimer, namely tPDI2N-EH, a red-light emitting molecule. OLED devices with the architecture of glass/ITO/PEDOT:PSS/EML/LiF/Ag (EML = emitting layer) were fabricated with EMLs comprised of tPDI2N-EH neat and blended with poly (9,9-dicotylfluorene, PFO), all solution processed from non-halogenated solvents. The photophysical and electrophysical performance of PFO:tPDI2N-EH-blend films with different composition ratios were investigated. The PFO:tPDI2N-EH-based OLEDs with a 2:18 ratio exhibited best performance. The PFO:tPDI2N-EH-based OLEDs gave red electroluminescence with the emission wavelength of 635 nm and the CIE (international commission on illumination) coordinates of (x = 0.672, y = 0.321). OLEDs with EMLs fabricated using roll-to-roll compatible methods are also demonstrated.

History

Email Address of Submitting Author

gregory.welch@ucalgary.ca

Institution

University of Calgary

Country

Canada

ORCID For Submitting Author

0000-0002-3768-937X

Declaration of Conflict of Interest

None

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