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Author : Yuanjia Zhang
Release : 2006
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Kind : eBook
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Book Synopsis Nanoscale Organic Thin Film Transistors by : Yuanjia Zhang
Download or read book Nanoscale Organic Thin Film Transistors written by Yuanjia Zhang. This book was released on 2006. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Calla Mae McCulley
Release : 2022
Genre :
Kind : eBook
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Book Synopsis Chemical Approaches for Improved Nanoscale Organic and Polymer Thin-film Transistors (TFTs) by : Calla Mae McCulley
Download or read book Chemical Approaches for Improved Nanoscale Organic and Polymer Thin-film Transistors (TFTs) written by Calla Mae McCulley. This book was released on 2022. Available in PDF, EPUB and Kindle. Book excerpt: Thin-film transistors (TFTs) function as electrical switches within integrated circuits. Precise control over the on and off states of this switch are crucial for device implementation into the various circuit applications. Currently, organic and polymer thin film semiconductors face challenges that differ from the semiconductors used in modern-day TFTs. However, they have their advantages such as being solution processable, relatively inexpensive, and deposition can be performed on a larger variety of substrates for flexible applications. Therefore, this dissertation consists of many approaches we have explored to overcome the performance challenges (low on-currents and mobilities) of organic and polymer semiconductor-based TFTs. Our approaches were implemented in large- and short-channel TFTs to study the effects of scaling down closer to current dimensions used in state-of-the-art technologies. The modifications to the dielectric layer, the electrical contacts, and the thin-film semiconductor layer were all investigated to highlight the impact each layer contributes to overall electrical TFT performance
Author : Jeongwon Park
Release : 2008
Genre :
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Book Synopsis Electronic Properties of Organic Thin Film Transistors with Nanoscale Tapered Electrodes by : Jeongwon Park
Download or read book Electronic Properties of Organic Thin Film Transistors with Nanoscale Tapered Electrodes written by Jeongwon Park. This book was released on 2008. Available in PDF, EPUB and Kindle. Book excerpt: Organic thin-film transistors (OTFTs) have received increasing attention because of their potential applications in displays, optoelectronics, logic circuits, and sensors. Ultrathin OTFTs are of technical interest as a possible route toward reduced bias stress in standard OTFTs and enhanced sensitivity in chemical field-effect transistors (ChemFETs). ChemFETs are OTFTs whose output characteristics are sensitive to the presence of analytes via changes in the channel mobility and/or threshold voltage induced by analyte chemisorption onto the channel materials. The fundamental understanding of charge transport properties of organic thin-films is critical for the applications. OTFT has been demonstrated by many groups; however, there has been much less progress towards more reliable contact structure between organic materials and electrodes. This thesis investigates the electrical properties of metal phthalocyanine thin-film devices. In chapter 1, the basic electrical properties in OTFTs are reviewed. In chapter 2, we have investigated the microfabrication process of OTFTs to control the contact morphology and the charge transport properties of phthalocyanine thin-film devices. In chapter 3, the channel thickness dependence of the mobility was investigated in bottom-contact copper phthalocyanine (CuPc) OTFTs. The current-voltage characteristics of bottom contact CuPc OTFTs with low contact resistance fabricated by the bilayer photoresist lift-off process were analyzed to determine the mobility, threshold voltage and contact resistance. The independence of measured electronic properties from channel thickness is due to the contact resistance being negligible for all channel thicknesses. For practical applications, the aging and recovery process in CuPc OTFTs were investigated in chapter 4. An origin of the aging process on CuPc OTFTs has been investigated based on the responses of thick 1000ML CuPc OTFTs under a controlled atmosphere. The recovery process under 30 % relative humidity with pure dry air for 48 hours and pure dry air for 24 hours can improve the OTFTs performance with a good current saturation behavior, a high mobility, a low threshold voltage and a high current on/off ratio due to controlling dopants. The bottom contact OTFTs with low contact resistance created in this work could serve useful in a variety of applications and initial results are presented for their use as displays, optoelectronics, logic circuits, and sensors.
Author : Cherie R. Kagan
Release : 2003-02-25
Genre : Technology & Engineering
Kind : eBook
Book Rating : 542/5 ( reviews)
Book Synopsis Thin-Film Transistors by : Cherie R. Kagan
Download or read book Thin-Film Transistors written by Cherie R. Kagan. This book was released on 2003-02-25. Available in PDF, EPUB and Kindle. Book excerpt: A single-source treatment of developments in TFT production from international specialists. It interweaves overlapping areas in multiple disciplines pertinent to transistor fabrication and explores the killer application of amorphous silicon transistors in active matrix liquid crystal displays.
Author : Brajesh Kumar Kaushik
Release : 2016-09-15
Genre : Technology & Engineering
Kind : eBook
Book Rating : 591/5 ( reviews)
Book Synopsis Organic Thin-Film Transistor Applications by : Brajesh Kumar Kaushik
Download or read book Organic Thin-Film Transistor Applications written by Brajesh Kumar Kaushik. This book was released on 2016-09-15. Available in PDF, EPUB and Kindle. Book excerpt: Text provides information about advanced OTFT (Organic thin film transistor) structures, their modeling and extraction of performance parameters, materials of individual layers, their molecular structures, basics of pi-conjugated semiconducting materials and their properties, OTFT charge transport phenomena and fabrication techniques. It includes applications of OTFTs such as single and dual gate OTFT based inverter circuits along with bootstrap techniques, SRAM cell designs based on different material and circuit configurations, light emitting diodes (LEDs). Besides this, application of dual gate OTFT in the logic gate, shift register, Flip-Flop, counter circuits will be included as well.
