Günaydın, OkanDemir, AhmetAtahan, AlparslanYardım, TayfunYücedağ, İbrahim2020-05-012020-05-0120190022-28601872-8014https://doi.org/10.1016/j.molstruc.2019.02.097https://hdl.handle.net/20.500.12684/6368Yardim, Tayfun/0000-0002-5223-9801WOS: 000462895000015A novel thiophene branched polystyrene copolymer (PS-Th) was successfully synthesized and well characterized. Two different Organic Field Effect Transistor (OFET) devices were fabricated by using this novel PS-Th material and polystyrene (PS) as insulator materials and main performance parameters of the devices such as mobility (mu(FET)), on/off ratio (I-on/off), and threshold voltage (V-Th) were compared. Consequently, our results indicated that PS-Th copolymer was efficiently working as dielectric material for OFETs. Moreover, mu(FET) significantly enhanced (approx. 3.7 times) compared to the PS based OFET device while V-Th and I-on/off were slightly increasing. This situation can be explained by well organized molecular arrangement at the dielectric-semiconductor interface via thiophene-thiophene interaction between semiconductor material Poly(3-hexylthiophene-2,5-diyl) (P3HT) and insulator material PS-Th chains. (C) 2019 Elsevier B.V. All rights reserved.en10.1016/j.molstruc.2019.02.097info:eu-repo/semantics/closedAccessOrganic field-effect transistor (OFET)Insulator materialsPolymer electrodeElectrical propertiesPolystyreneThiopheneArticle1185121127WOS:000462895000015Q2Q3