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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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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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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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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.
in Cooperation with on an Cooperation-Score of 37%
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
Cyclopentadithiophene-benzothiadiazole oligomers and polymers; Synthesis, characterisation, field-effect transistor and photovoltaic characteristics
Abstract
Conjugated oligomers with various ratios of cyclopentadithiophene (CPDT) to benzothiadiazole (BT) repeating units are reported. These oligomers can be polymerised to high molecular weight polymers (M n > 100k) by oxidative polymerisation using iron(iii)chloride. The electronic properties of these materials were examined by cyclic voltammetry and UV-vis spectroscopy and the results compared to those calculated using density functional theory (DFT). Polymers with optimum ratios of CPDT:BT (2:1) units show hole mobilities in excess of 10 -2 cm 2 V -1 s -1 as the active layer in organic field effect transistors (OFETs). Bulk heterojunction organic photovoltaic (OPV) devices of these polymers with PCBM as the electron acceptor show a power conversion efficiency of 2.1% when processed in the absence of any additives. The reported OFET performance is significantly higher than the parent PCPDTBT alternating copolymer (CPDT:BT = 1:1) and also shows a moderate improvement in OPV performance. © 2012 The Royal Society of Chemistry.