Improved Charge Carrier Mobility

Until recently, the issue of contact resistance was hardly mentioned in papers dealing with OTFTs because the performance of the devices was so low that the current flowing between source and drain was only limited by the resistance of the channel. With improvement of the charge-carrier mobility, this is no longer true limitations by contact resistance are becoming increasingly crucial, and finding ways to reduce these limitations has become a key issue. [Pg.15]

To obtain better device performance, achieving charge balance in PLED is crucial. The imbalance in charge carriers is due to the high barrier for hole injection and the discrepancy in charge carrier mobilities. Therefore, facilitating hole injection via introducing HTMs onto the PFs would be the key factor to improve the device performance. [Pg.56]

Improving the OTFT performance by optimising the organie semiconductor properties and therefore the charge carrier mobility p is one way to increase important device parameters. Another way is the reduetion of the lateral size. The channel length L is hereby the critical device parameter. Downscaling of L... [Pg.469]

However, another approach for improving the charge carrier mobility is to employ conjugated, semi-crystalline polymers. Here, a further advantage is the extended absorption in the visible range. These issues are addressed in the next chapter which is concerned with crystalline-crystalline block copolymers comprised of poly(3-hexythiophene) and PPerAcr. [Pg.141]

Karl, N., Charge-carrier mobility in organic crystals, in Organic electronic materials, eds. Farchioni, R., and Grosso, G., pp. 283-326, Springer-Verlag, Berlin, 2001. Dodabalapur, A., Torsi, L., and Katz, H. E., Organic transistors Two-dimensional transport and improved electrical characteristics. Science, 268, 270, 1995. [Pg.68]

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