Modification of gold source and drain electrodes by self-assembled monolayer in staggered n- and p-channel organic thin film transistors
| Autor: | Romain Coppard, Mohamed Benwadih, Antoine Kahn, Michael Kröger, Gilles Le Blevennec, Christophe Serbutoviez, Gilles Horowitz, Damien Boudinet, Jean Marie Verilhac, Yabing Qi, Romain Gwoziecki, Stéphane Altazin |
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| Rok vydání: | 2010 |
| Předmět: |
Organic electronics
Materials science Contact resistance Analytical chemistry Self-assembled monolayer General Chemistry Condensed Matter Physics Electronic Optical and Magnetic Materials Amorphous solid Biomaterials Thin-film transistor Monolayer Materials Chemistry Work function Electrical and Electronic Engineering Ultraviolet photoelectron spectroscopy |
| Zdroj: | Organic Electronics. 11:227-237 |
| ISSN: | 1566-1199 |
| DOI: | 10.1016/j.orgel.2009.10.021 |
| Popis: | We report on the effect of the deposition of self-assembled monolayers (SAMs) on the source and drain electrodes on the contact resistance and mobility in organic thin film transistors (OTFTs). Ultraviolet photoelectron spectroscopy (UPS) shows a variation of the work function of the electrodes depending on the SAM. OTFTs were fabricated with solution processible Polyera ActivInk™ N1400, TIPS-pentacene and TFB, giving access to both polarities of transistors and to both crystalline and amorphous materials. The transfer line method (TLM) was used to separately estimate the contact resistance and mobility. A clear correlation is found between the work function of the modified electrodes and the corresponding contact resistance. The effect on mobility is more puzzling, and tentatively attributed to morphological effects. |
| Databáze: | OpenAIRE |
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