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Organic thin-film transistors for organic light-emitting flat-panel display backplanes

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4 Author(s)
Jackson, T.N. ; Dept. of Electr. Eng., Pennsylvania State Univ., University Park, PA, USA ; Yen-Yi Lin ; Gundlach, D.J. ; Klauk, H.

The performance of organic thin-film transistors (OTFTs) has improved significantly in the last several years and it now appears likely that they will find application in low-cost large-area electronic applications. Active-matrix displays are of special interest and integration of OTFTs with organic light-emitting devices (OLEDs) in all-organic displays is particularly attractive. The device requirements for active-matrix OLED displays are very similar to those of active-matrix liquid crystal displays (AMLCDs) and can be satisfied with OTFTs fabricated using stacked pentacene active layers. Such devices have demonstrated field-effect mobility near 1.5 cm2/V·s, on/off current ratio near 108, near-zero threshold voltage, and subthreshold slope less than 1.6 V/decade. These characteristics are similar to those obtained with hydrogenated amorphous silicon (a-Si:H) devices and such devices would allow the use of polymeric substrates with advantages in weight, ruggedness, and cost compared to glass substrates currently used with a-Si:H devices in AMLCDs

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Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:4 ,  Issue: 1 )