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| Naji, M. |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Ali, M. A. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Majewski, Leszek A.
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Topics
Publications (9/9 displayed)
- 2020Low-voltage IGZO TFTs using solution-deposited OTS-modified Ta2O5 dielectriccitations
- 2016Cyanoethyl cellulose-based nanocomposite dielectric for low-voltage, solution-processed organic field-effect transistors (OFETs)citations
- 2015Dielectric materials for low voltage OFET operation
- 2015Solution-processed nanocomposite dielectrics for low voltage operated OFETscitations
- 2012Cyclopentadithiophene-benzothiadiazole oligomers and polymers; Synthesis, characterisation, field-effect transistor and photovoltaic characteristicscitations
- 2008Triarylamine polymers by microwave-assisted polycondensation for use in organic field-effect transistorscitations
- 2005Electrode specific electropolymerization of ethylenedioxythiophene: Injection enhancement in organic transistorscitations
- 2004Organic field-effect transistors with electroplated platinum contacts
- 2004Organic field-effect transistors with ultrathin gate insulator
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article
Low-voltage IGZO TFTs using solution-deposited OTS-modified Ta2O5 dielectric
Abstract
Low voltage, high performance thin film transistors (TFTs) that use amorphous metal oxide (MO) semiconductors as the active layer have been getting tremendous attention due to their essential role in future portable electronic devices and systems. However, reducing the operating voltage of these devices to or below 1 V is a very challenging task because it is very difficult to obtain low threshold voltage (VTH), small subthreshold swing (SS) MO TFTs. In this paper, indium gallium zinc oxide (IGZO) TFTs that use solution-deposited Ta2O5 operating at 1 V are demonstrated. To enhance the dielectric properties of the fabricated ultra-thin (d ~ 22 ± 2 nm) tantalum pentoxide films, n-octadecyltrichlorosilane (OTS) self-assembled monolayer (SAM) was used. The morphology and electrical properties of both pristine and OTS-treated Ta2O5 films have been studied. The optimized Ta2O5/OTS IGZO TFTs operate at 1 V with saturation field-effect mobility larger than 2.3 cm2/Vs, threshold voltage of around 400 mV, subthreshold swings below 90 mV/dec, and current on-off ratios well above 105.The performance of the presented TFTs is high enough for many commercial applications such as disposable sensors or throwaway, low-end electronics significantly reducing the cost of their production.