Charge Injection in Regioregular Poly-(3-Hexythiophene) Organic Field-Effect Transistors with Different Metal Electrodes

Abstract:

Here we report on regioregular poly-(3-hexythiophene) (P3HT) organic field-effect transistors (OFETs) with various metal electrodes: pristine Au, pristine Cr, and Cr/Au. Compared to the performance of OFETs using different electrodes, the OFETs with Au electrode have better mobility (μ = 0.0090 cm²/Vs) and larger current at the same source-drain voltage and gate voltage. The enhancement of the device performance with Au electrode can be attributed to a small contact resistance and a small barrier height to P3HT for hole carrier injection.

• Periodical: Advanced Materials Research (Volume 873)
• Pages: 752-756
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.873.752
• Online since: December 2013
• Authors: Rui Rui Zhang*, Shi Wei Lin, Jian Jun Liao
• Keywords: Charge Carrier Injection, Electrode, Organic Field-Effect Transistors

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