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Poly(3-hexylthiophene)-Based Organic Thin-Film Transistors with Virgin Graphene Oxide as an Interfacial Layer.
| Content Provider | Europe PMC |
|---|---|
| Author | Tarekegn, Eyob N. Seyedi, Mastooreh Luzinov, Igor Harrell, William R. |
| Editor | Eun Je, Lee Azum, Naved |
| Copyright Year | 2022 |
| Abstract | We fabricated and characterized poly(3-hexylthiophene-2, 5-diyl) (P3HT)-based Organic thin-film transistors (OTFTs) containing an interfacial layer made from virgin Graphene Oxide (GO). Previously chemically modified GO and reduced GO (RGO) were used to modify OTFT interfaces. However, to our knowledge, there are no published reports where virgin GO was employed for this purpose. For the sake of comparison, OTFTs without modification were also manufactured. The structure of the devices was based on the Bottom Gate Bottom Contact (BGBC) OTFT. We show that the presence of the GO monolayer on the surface of the OTFT’s SiO2 dielectric and Au electrode surface noticeably improves their performance. Namely, the drain current and the field-effect mobility of OTFTs are considerably increased by modifying the interfaces with the virgin GO deposition. It is suggested that the observed enhancement is connected to a decrease in the contact resistance of GO-covered Au electrodes and the particular structure of the P3HT layer on the dielectric surface. Namely, we found a specific morphology of the organic semiconductor P3HT layer, where larger interconnecting polymer grains are formed on the surface of the GO-modified SiO2. It is proposed that this specific morphology is formed due to the increased mobility of the P3HT segments near the solid boundary, which was confirmed via Differential Scanning Calorimetry measurements. |
| Journal | Polymers |
| Volume Number | 14 |
| PubMed Central reference number | PMC9736656 |
| Issue Number | 23 |
| PubMed reference number | 36501455 |
| e-ISSN | 20734360 |
| DOI | 10.3390/polym14235061 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-11-22 |
| Access Restriction | Open |
| Rights License | Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). © 2022 by the authors. |
| Subject Keyword | OTFT P3HT graphene oxide graphene oxide interfaces polymer semiconductor layers improvement of P3HT interface |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Polymers and Plastics |
