1- organic thin film transistor, 2- field-effect mobility for organic Essay

1- organic thin film transistor, 2- field-effect mobility for organic transistor.3- leakage current in transistors - Essay Example Digital radiography has seen drastic improvement since the adoption of TFTs in general radiography. This technology has also been used in the Active Matrix OLED (ALOMED) screens. Klauk, (2006, pp41-47) states that organic transistors are transistors that are made using thin films from an organic semiconductor instead of inorganic semiconductors in their channel. Small organic molecules may be evaporated in a vacuum to make the organic transistor. Alternatively, organic transistors are prepared by solution casting and transfer of organic single crystalline layers on a suitable substrate. The principal idea is the use of an organic material as the active semiconductor, to replace the initially used macromolecular organic materials (polymers) to increase efficiency. Electropolymerisation may still be used in case of unavailability of suitable and commonly used organic semiconductors (Brazis, Gamota, Kalyanasundaram & Zhang, 2004, p9). Optimization of structural design and devise interfaces led to several construction designs formulations but the most widely used are top and bottom contact Organic Thin Film Transistors (OTFTs). The terms top and bottom refer to the position of the two electrodes in relation to the position of the semiconductor. Top-contact OTFTs have their thin semiconductor film layer deposited first, then followed by the source and drain electrodes contacts onto the gate dielectric. A considerable reduction in contact resistance at the two electrodes; therefore they have little structural disorder at the interface. Bottom contact OTFTs have their source and drain electrode contacts first deposited first onto the gate dielectric supporter then the organic semiconductor crystal structure deposited directly on top. Molecular layers in the crystal structure are laid in a less ordered manner during the deposition onto the source and drain electrodes. While top contact OTFTs have reduced contact resistance and

Week 7 Discussion Questions Assignment Example | Topics and Well Written Essays - 500 words

Week 7 Discussion Questions - Assignment Example The American website offers a feel of black & white picture of the product image and the product features, while the Indian website uses the color element variously, particularly red color in sub titles of the product traits besides showing total range of all series available in black & white and color MFD models, differentiating them through the use of colored text, on the left side of the web page. The Indian webpage of the product focuses on the external features of the product, such as its design and frame but pinpointing at the same that the product is the outcome of â€Å"cutting-edge technologies.† Another mentionable difference is that the American web page of the product also includes and presents another similar product description as features of both are same. That similar product is MX-3100N. The American web page does not mention that the Open System Architecture is 3.0, unlike its Indian counterpart. Whether a gray market product available in the US market poses any risk or not, depends on the kind of product. Some gray market products can be too risky to purchase, for instance purchasing of drugs from the gray market in the US; it could be risky to the extent of life-threatening. As per the survey conducted by Premier Healthcare Alliance in 2011, a call for gray market drugs was posted in the Premier Pharmacy Weekly Update in the last week of April 2011, specifying the national drug codes (NDCs) and their retail prices for comparison with Premier base contract prices (Cherici et al. 1). Comparison of the drugs of gray market with of Premier base contract prices proved that all gray market drugs were manufacturer back-ordered or short-supply drugs. The marketing strategy used by gray vendors to sell their drugs was in the form of emails and fliers, using language tool such, â€Å"We only have 20 of this drug left and quantities are going fast.† All marketing and sale offers online were made for those drugs