Inkjet printed silver source/drain electrodes for low-cost polymer thin film transistors
2005; Elsevier BV; Volume: 83; Issue: 2 Linguagem: Inglês
10.1016/j.mee.2005.09.002
ISSN1873-5568
AutoresFengliang Xue, Zhengchun Liu, Yi Su, Kody Varahramyan,
Tópico(s)Organic Electronics and Photovoltaics
ResumoSilver tracks for source/drain (S/D) electrodes in low-cost polymer thin film transistors (TFTs) have been realized through inkjet printing technique, using heavily n-doped silicon wafer with thermally grown silicon dioxide as the substrate and poly(3-hexylthiophene) (P3HT) as the channel material. Spin coating a layer of poly-4-vinylphenol (PVPh) onto the substrate was found to enhance the silver track uniformity and lower the cure temperature (from 300 to 210 °C). The surface roughness of the PVPh film was optimized to improve the device performance. The fabricated P3HT TFT with a channel length of 20 μm exhibited a saturation mobility of 3.5 × 10−2 cm2/V/s which was three times higher than that obtained in P3HT TFTs with gold S/D electrodes.
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