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s. s. s. s. s. s. s. s. s. s. The key to making high mobility polymer thin film transistors: nucleation of crystals off of the gate dielectric Stanford MRSEC, DMR-0213618.
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s s s s s s s s s s The key to making high mobility polymer thin film transistors: nucleation of crystals off of the gate dielectricStanford MRSEC, DMR-0213618 • When conjugated polymer crystals nucleate off of the gate dielectric, the conjugated backbones, shown in red, are all aligned. Charge can easily hop from one grain to another. • Proven strategies for nucleating crystals on the dielectric • Make the dielectric smooth • Coat the dielectric with OTS • Use high boiling point solvent or anneal the film • Use high molecular weight polymers. Kline, R. J., McGehee, M. D., Fréchet, J. M. J., et al. Macromolecules 38, 3312 (2005) Kline, R. J., McGehee, M. D. & Toney, M. F., Nature Materials 5, 222 (2006).