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Gate Dielectric Microstructural Control of Pentacene Film Growth Mode and Field-Effect Transistor Performance


  • This research was supported by AFOSR (STTRFA 9550-04-0080), and the NSF-MRSEC program through the Northwestern Materials Research Center (DMR-0520513). We thank Dr. M.-H. Yoon for helpful discussions. Supporting Information is available online from Wiley InterScience or from the authors.


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Organic semiconductor/dielectric interfacial characteristics play a critical role in influencing organic thin-film transistor (OTFT) performance characteristics (see figure). Clear correlations between pentacene film deposition temperature, estimated polymer dielectric surface microstructural mobility, and the corresponding film growth mode, semiconductor phase composition, and carrier mobilities are established.

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