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Solution processed red organic light-emitting-diodes using an N-annulated perylene diimide fluorophore

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Abstract

In this contribution we report on solution processed red OLEDs based upon an 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-dioctylfluorene, 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 the 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.

Graphical abstract: Solution processed red organic light-emitting-diodes using an N-annulated perylene diimide fluorophore

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Article information


Submitted
11 Oct 2019
Accepted
05 Jan 2020
First published
08 Jan 2020

J. Mater. Chem. C, 2020, Advance Article
Article type
Paper

Solution processed red organic light-emitting-diodes using an N-annulated perylene diimide fluorophore

S. V. Dayneko, M. Rahmati, M. Pahlevani and G. C. Welch, J. Mater. Chem. C, 2020, Advance Article , DOI: 10.1039/C9TC05584C

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