Performance enhancement of triisopropylsilylethynyl pentacene organic field effect transistors with inkjet-printed silver source/drain electrodes achieved via dispersible reduced graphene oxide
We report a performance enhancement of triisopropylsilylethynyl (TIPS) pentacene organic field effect transistors (OFETs) obtained by treating the surface of SiO2/Si substrate with dispersible reduced graphene oxide (rGO). The source and drain electrodes were patterned with inkjet-printed highly con...
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Veröffentlicht in: | Thin solid films 2013-09, Vol.542, p.327-331 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | We report a performance enhancement of triisopropylsilylethynyl (TIPS) pentacene organic field effect transistors (OFETs) obtained by treating the surface of SiO2/Si substrate with dispersible reduced graphene oxide (rGO). The source and drain electrodes were patterned with inkjet-printed highly conductive silver. The sheet resistance of inkjet-patterned silver electrodes has found to be ~1 Ω/□, which is comparable to that of typical vacuum-evaporated silver electrodes. The electrical performance has improved by rGO treatment, with a morphology improved for the active TIPS pentacene layer. The rGO treatment increased the morphological grain size of TIPS pentacene, resulting in a decreased number of interfacial trapping sites in the carrier transport paths. The field effect mobility of the TIPS pentacene OFETs, following the rGO surface treatment, was improved from 0.082cm2/V∙s to 0.141cm2/V∙s.
•We made triisopropylsilylethynyl pentacene transistor on reduced graphene oxide (rGO).•The electrical performance of the device was improved with the rGO layer.•The source and drain electrodes were patterned by inkjet-printed silver.•The conductivity of inkjet-printed silver was comparable to that of evaporated silver. |
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ISSN: | 0040-6090 1879-2731 |
DOI: | 10.1016/j.tsf.2013.07.008 |