Self-assembly of ordered poly(3-hexylthiophene) nanowires for organic field-effect transistor applications

• A gold island structure is proposed to prepare ordered P3HT nanowires.
• Dichlorobenzene is an ideal solvent to grow ordered P3HT nanowires.
• The length and width of nanowires are measured to be 20–30 μm and 50 nm, respectively.
• We successfully fabricate OFETs based on P3HT ordered nanowires.
• The mobility and threshold voltage are 0.06 cm2/V s and −13 V, respectively.

A gold island structure is proposed to prepare ordered P3HT nanowires. The optical photographs of P3HT nanostructures self-assembly from different solvents show that dichlorobenzene is an ideal solvent to grow ordered P3HT nanowires. From optical and TEM graphs, the length and width of nanowires are measured to be 20–30 μm and 50 nm, respectively. Finally, we successfully fabricate organic field-effect transistors (OFETs) based on P3HT ordered nanowires with uniform density by introducing this method. The mobility and threshold voltage are 0.06 cm2/V s and −13 V, respectively. Our study may provide a thought in developing and optimizing organic electronic devices.

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