Implementation of graphene multilayer electrodes in quantum dot light-emitting devices

Wolff, Svenja
Jansen, Dennis
Terlinden, Hendrik
Keleştemur, Yusuf
Mertin, Wolfgang
Demir, Hilmi Volkan
Bacher, Gerd
Nannen, Ekaterina
Graphene is a highly attractive candidate for implementation as electrodes in next-generation large-area optoelectronic devices thanks to its high electrical conductivity and high optical transparency. In this study, we show all-solution-processed quantum dot-based light-emitting devices (QD-LEDs) using graphene mono- and multilayers as transparent electrodes. Here, the effect of the number of graphene layers (up to three) on the QD-LEDs performance was studied. While the implementation of a second graphene layer was found to reduce the turn-on voltage from 2.6 to 1.8 V, a third graphene layer was observed to increase the turn-on voltage again, which is attributed to an increased roughness of the graphene layer stack.


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Citation Formats
S. Wolff et al., “Implementation of graphene multilayer electrodes in quantum dot light-emitting devices,” APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, vol. 120, no. 3, pp. 1197–1203, 2015, Accessed: 00, 2021. [Online]. Available: