In this work, we report on the fabrication and characterization of organic light-emitting transistors (OLETs) within an indium–tin-oxide (ITO)-free platform, using graphene-based transparent conductive electrodes in place of ITO as gate electrode. A direct comparison between twin bottom-gate/top-contacts OLETs, where a standard ITO layer is replaced with a film made of a few graphene layers, shows that comparable electrical characteristics can be obtained along with a clear improvement in the electroluminescence generation characteristics. Our experimental findings pave the way to the exploitation of graphene-based transparent conductive electrodes within this class of emerging devices on flexible substrates, further promoting the novel era of flexible organic electronics.
ITO-Free Organic Light-Emitting Transistors with Graphene Gate Electrode / Soldano, Caterina; Stefani, Andrea; Biondo, Viviana; Basiricò, Laura; Turatti, Guido; Generali, Gianluca; Ortolani, Luca; Morandi, Vittorio; Veronese, Giulio Paolo; Rizzoli, Rita; Capelli, Raffaella; Muccini, Michele. - In: ACS PHOTONICS. - ISSN 2330-4022. - ELETTRONICO. - 1:10(2014), pp. 1082-1088. [10.1021/ph500289s]
ITO-Free Organic Light-Emitting Transistors with Graphene Gate Electrode
STEFANI, ANDREA;BASIRICO', LAURA;GENERALI, GIANLUCA;ORTOLANI, LUCA;MORANDI, VITTORIO;VERONESE, GIULIO PAOLO;
2014
Abstract
In this work, we report on the fabrication and characterization of organic light-emitting transistors (OLETs) within an indium–tin-oxide (ITO)-free platform, using graphene-based transparent conductive electrodes in place of ITO as gate electrode. A direct comparison between twin bottom-gate/top-contacts OLETs, where a standard ITO layer is replaced with a film made of a few graphene layers, shows that comparable electrical characteristics can be obtained along with a clear improvement in the electroluminescence generation characteristics. Our experimental findings pave the way to the exploitation of graphene-based transparent conductive electrodes within this class of emerging devices on flexible substrates, further promoting the novel era of flexible organic electronics.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.