Inkjet-printed reduced graphene oxide/poly(vinylalcohol) composite electrodes for flexible transparent organic field-effect transistors
- Inkjet-printed reduced graphene oxide/poly(vinylalcohol) composite electrodes for flexible transparent organic field-effect transistors
- 임수진; 강보석; 곽동훈; 이위형; 임정아; 조길원
- Issue Date
- The Journal of Physical Chemistry C
- VOL 116, NO 13, 7520-7525
- The characteristics of organic field-effect transistors (OFETs) prepared with inkjet-patterned reduced graphene
oxide (RGO)/poly(vinylalcohol) (PVA) composite electrodes were studied. PVA was blended with graphite oxide to enhance
exfoliation of the graphite sheets and to provide for stable inkjet printing. Multistep reduction based on a combination of
chemical and thermal reduction was conducted to increase the conductivity. Use of the inkjet-patterned RGO/PVA electrodes
increased field-effect mobility of the bottom-contact pentacene FETs to 0.23 ㎠/(V·s), which was significantly enhanced
relative to that of FETs with Au or PEDOT:PSS electrodes. Moreover, we successfully prepared all-organic flexible transparent
OFETs using inkjet-patterned RGO/PVA electrodes on plastic substrates.
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