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Appl. Sci. 2018, 8(4), 539; https://doi.org/10.3390/app8040539

Organic Light-Emitting Diodes Based on Phthalimide Derivatives: Improvement of the Electroluminescence Properties

1
Aix Marseille Univ, CNRS, Institut de Chimie Radicalaire ICR, UMR 7273, F-13397 Marseille, France
2
Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, F-13397 Marseille, France
*
Author to whom correspondence should be addressed.
Received: 4 March 2018 / Revised: 28 March 2018 / Accepted: 29 March 2018 / Published: 31 March 2018
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Abstract

In this study, a phthalimide-based fluorescent material has been examined as a green emitter for multilayered organic light-emitting diodes (OLEDs). By optimizing the device stacking, a maximum brightness of 28,450 cd/m2 at 11.0 V and a maximum external quantum efficiency of 3.11% could be obtained. Interestingly, OLEDs fabricated with Fluo-2 presented a 20-fold current efficiency improvement compared to the previous results reported in the literature, evidencing the crucial role of the device stacking in the electroluminescence (EL) performance of a selected emitter. Device lifetime was also examined and an operational stability comparable to that reported for a standard triplet emitter i.e., bis(4-methyl-2,5-diphenyl-pyridine)iridium(III) acetylacetonate [(mdppy)2Iracac] was evidenced. View Full-Text
Keywords: OLED; fluorescence; phosphorescence; green; device architecture OLED; fluorescence; phosphorescence; green; device architecture
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Dumur, F.; Ibrahim-Ouali, M.; Gigmes, D. Organic Light-Emitting Diodes Based on Phthalimide Derivatives: Improvement of the Electroluminescence Properties. Appl. Sci. 2018, 8, 539.

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