Thin-fllm transistor

More recently, the applications for silicon now include electronics. A silicon-based device is found in almost every consumer product available in our world today. Even refrigerators now have extensive microprocessor controls, some fitted with television screens The popularity of flat-panel televisions has also employed silicon-based technology, especially for thin-fllm transistor liquid crystal displays (TFT LCDs). In addition to electronics, as the world looks for alternative sources of energy due to dwindling petroleum reserves, silicon-based photovoltaic devices will represent an increasingly important application for our society. 

Following these CNT electronic gas sensor studies, many other methods have been explored focusing on the reduction of fabrication cost. Snow et al. demonstrated that a low-density random network of SWCNTs can be fabricated into p-type thin-fllm transistors [Figure 14.7(c)] with a fleld-effect mobility of about 10 cm / Vs and an on-to-off ratio of about 10 [65]. They demonstrated that such thin-fllm transistors can detect dimethyl methylphosphonate (DMMP), a simulant for the nerve agent sarin, at sub-ppb levels [45]. SWCNT network transistors have also been transferred to polymer substrates to form flexible electronic gas sensors [66]. Other resistive sensors based on random SWCNT network [47] or MWCNT films [41] have also been reported. Besides the cost, CNT network and thin-film sensors increase the statistical reliability by averaging out the response at many adsorption sites. This is particularly important when gas concentration is extremely small. 

M. L. Chabinyc, R. A. Street and J. E. Northrop. Effects of molecular oxygen and ozone on polythiophene-based thin-fllm transistors. Appl. Phys. Let. 90(12), 123508/1-123508/3 (2007). 

Lin, R, Yan, R, 2012. Organic thin-fllm transistors for chemical and biological sensing. Advanced Materials 24 (1), 34—51. 

Mottaghi M, Horowitz G (2006) Field-induced mobility degradation in pentacene thin-fllm transistors. Org Electron 7 528-536... 

Organic transistors are thin-fllm transistors. In contrast to the most common inorganic field-effect transistors they operate in depletion (off-state) and accumulation (on-state). The current is determined by the gradient of the quasi-Fermi potential along the channel. Thus, one ean write, e.g., for a p-channel transistor of width w... 

Fig. 8.13 Fabricated flexible display driven by active matrix method with polycrystal Si thin-fllm transistors...

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