Fabrication, caractérisation électrique et fiabilité des OTFTs imprimés sur substrat plastique

Abstract : This thesis project is about the study of stability and reliability of organic transistors printed at CEA-Liten. P-Type OTFTs were manufactured on plastic substrate, with a p-type polymer semiconductor (SP400 from Merck) and a fluoropolymer as dielectric. First, an experimental protocol for electrical characterization was determined in order to overcome potential effects due to environment, measurements or aging of OTFTs. Then a model based on the expression of the accumulation charge in the transistor was developed. This model allowed the OTFT parameters’ extraction during low temperature measurements, which showed a temperature-activated charges transport in the OSC. Finally, the impact of negative gate bias stress on OTFTs’ characteristics was studied. The electrical stability of the P-OTFTs was measured on several stacks to study the influence of the dielectric material or its deposition method and the influence of the gate (printed silver ink or sputtered gold electrode).
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Clara Haddad. Fabrication, caractérisation électrique et fiabilité des OTFTs imprimés sur substrat plastique. Micro et nanotechnologies/Microélectronique. Université Grenoble Alpes, 2018. Français. ⟨NNT : 2018GREAT116⟩. ⟨tel-02170680⟩

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