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Journal of Materials Science
Erschienen in: Journal of Materials Science 19/2019

05.07.2019 | Electronic materials

Enhanced electroluminescent performance by doping organic conjugated ionic compound into graphene oxide hole-injecting layer

verfasst von: Pan Liu, Junna Liu, Bingbing Zhang, Wansheng Zong, Shengang Xu, Yingliang Liu, Shaokui Cao

Erschienen in: Journal of Materials Science | Ausgabe 19/2019

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Abstract

Organic conjugated ionic compound 10,10′-dimethyl-9,9′-biacridinum bis(monomethyl terephthalate) (MMT) is doped into graphene oxide (GO) hole-injecting layer to enhance the electroluminescent performance of organic light-emitting diodes (OLEDs). The composite films are characterized in detail by FTIR, SEM, XPS, and UPS. The XPS result indicates the evident π–π stacking interaction between the conjugated structures of GO and MMT. The UPS result shows the decrease in ionization potential of GO due to MMT-doping. As a result, at the optimal doping ratio of 4 wt%, the maximum luminous efficiency of OLEDs is increased to 15.46 cd/A, which is 3.4 times as 4.55 cd/A of the control device. Besides, the luminance is also enhanced to 19950 cd/m2, while the turn-on voltage is decreased to 2.5 V. Doping organic conjugated ionic compound into the GO hole-injecting layer is a facile and efficient approach to improve the electroluminescent performance of OLEDs.
Vorheriger Artikel BaAs3: a narrow gap 2D semiconductor with vacancy-induced semiconductor–metal transition from first principles
Nächster Artikel Calcination of UV shielding nanopowder and its effect on weather resistance property of polyurethane nanocomposite films

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Metadaten
Titel
Enhanced electroluminescent performance by doping organic conjugated ionic compound into graphene oxide hole-injecting layer
verfasst von
Pan Liu
Junna Liu
Bingbing Zhang
Wansheng Zong
Shengang Xu
Yingliang Liu
Shaokui Cao
Publikationsdatum
05.07.2019
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 19/2019
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-019-03820-1

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