Berlin 2012 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 56: Organic Electronics and Photovoltaics: Electronic Properties II (jointly with DS, CPP, O)

HL 56.3: Talk

Wednesday, March 28, 2012, 12:00–12:15, H 2032

High Performance Organic Transistors and Circuits with Patterned Polypyrrole Electrodes — •Liqiang Li, Harald Fuchs, and Lifeng Chi — Physikalisches Institut, Universität Münster, Münster, Germany

Electronic circuits based on organic transistors have sparkled considerable research interests due to their unique applications. One of the key prerequisites to convert the high potential to real applications is the preparation and patterning of appropriate electrode materials. Until now, a variety of electrode materials have been utilized for organic devices, among which conducting polymer electrodes have been proposed to be a promising alternative to replace metal electrodes, as they are endowed with unique features which may embody some advantages of organic circuits. However, high performance and stable devices with pure polypyrrole electrodes, especially n-type transistors and complementary circuits, are not reported.

Here we demonstrate the high performance p-/n-type organic transistors and complementary inverter circuits by using patterned PPY as pure electrode. Remarkably, both transistors and inverters with PPY electrodes show good stability under continuous operation and long-term storage conditions. Furthermore, PPY electrodes also exhibit good applicability in solution-processed and flexible devices. All these results indicate the great potential of PPY electrodes in solution-processed, all-organic, flexible, transparent, and low-power electronics.