Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 37 for “"Organic thin film"”.
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Visible spectrometer utilizing organic thin film absorption
… spectrum, based on absorption characteristics of organic thin films. The device uses fundamental principles of linear algebra to reconstruct spectral components of a signal from the transmission through an organic thin film. Best possible performance of the device is characterized, effects of …
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All-Inkjet-Printed Low-Voltage Organic Thin-Film Transistors
… development of all-inkjet-printed low-voltage organic thin-film transistors. Organic thin-film transistors (OTFTs), taking advantage of low-temperature printability, mechanical flexibility, and multi-functionality, are promising for a wide range of emerging applications such as wearable …
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Enhancement of field-effect mobility of organic thin film transistors.
Enhancement of field-effect mobility of organic thin film transistors.
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New Methods for the Investigation of Organic Thin-Film Devices
… new techniques for the investigation of organic thin-film devices and have focussed on properties on the molecular scale as well as on macroscopic properties of organic devices. Scanning probe techniques were used to obtain spatially resolved information on morphology and electro-optical …
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Alternative methods and materials for patterning organic thin film electronics
… solvents, and etchants traditionally used--organic small molecules are simply not compatible with these tools. Hence, there is motivation for a renewed examination of variants of this inherently parallel, high speed approach. This work investigates the use of chemically inert resists that …
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The bias-stress effect in pentacene organic thin-film transistors
Organic thin-film transistors (OTFTs) are promising for flexible large-area electronics. However, the bias-stress effect (BSE) in OTFTs causes operational instability that limits the usefulness of the OTFT technology in a wide range of circuit applications. Currently, most existing studies on OTFT …
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Additive Fabrication of Microstructures Using Self-Assembled Organic Thin-Film Templates
… metal-oxide-silicon devices based on printed organic thin films of self-assembled monolayers. With further development, the patterning of metal and ceramic thin films directed by SAMs appears to have a great potential in fabricating the three-dimensional thin film structures needed for …
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An organic thin-film transistor circuit for large-area temperature-sensing
This thesis explores the application of organic thin-film transistors (OTFTs) for temperature-sensing. The goal of this work is twofold: the understanding of the OTFT's electrical characteristics' temperature dependence, and the creation of OTFT temperature-sensing circuits. We find that OTFTs have …
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The Integration and Applications of Organic Thin Film Transistors and Ferroelectric Polymers
Organic thin film transistors and ferroelectric polymer (polyvinylidene difluoride) sheet material are integrated to form various sensors for stress/strain, acoustic wave, and Infrared (heat) sensing applications. Different from silicon-based transistors, organic thin film transistors can be …
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Flexible and solution-processed organic thin film transistors for high voltage applications
… and pentacene high-voltage organic thin film transistors (HVOTFTs) were fabricated on solid and flexible substrates via a low temperature (< 120 °C) solution-processed and vacuum-deposited fabrication methods, achieving breakdown voltages and on/off current ratios beyond -550 …
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Self-Healing of Open-Circuit Faults in Organic Thin-Film Transistor-Based Flexible Electronics
… As a key component in flexible circuits, an organic thin-film transistor (OTFT) fabricated by all inkjet-printing process has been developed and characterised in this study. This transistor uses 6,13-bis(triisopropylsilylethynyl)-pentacene (TIPSPentacene) as the semiconductor, poly (vinyl …
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An Arduino-controlled bioreactor for stimulation and in situ pH monitoring of cell cultures with Organic Thin Film Transistors
L'abstract è presente nell'allegato / the abstract is in the attachment
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Fabrication and application of a novel four-terminal hybrid organic/inorganic field-effect transistor for volatile organic compounds sensing
The potential application of a novel hybrid organic/inorganic volatile organic compounds sensor for commercialization and scientific research is presented. This sensor can operate both in the commonly used ‘organic thin-film transistor’ (OTFT) and ‘chemical field-effect transistor’ (CHEMFET) …
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Chemical and biological sensors based on organic semiconductors
… two types of sensors: chemical sensors based on organic thin film transistors, and a miniaturized surface plasmon resonance biosensors for biotechnology and medical diagnostics applications. During completion of my research projects I designed and optimized several device architectures using …
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Chemo and biodetection in liquid with organic transistor
… and biological species in liquids by using organic transistor technology. One device, which is named Organic Charge Modulated Field E�ect Transistor (OCMFET), is a charge sensor which was tested as pH and DNA sensor. The other device is an Organic Electrochemical Transistor (OECT) entirely …
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Organic Semiconducing Thin Films: Device Applications and Beyond
Organic semiconductors show great promise for device applications, particularly as organic thin film transistors (OTFTs) and organic photovoltaics (OPVs), due to their potential for low cost, high volume fabrication when compared to traditional inorganic semiconductors. While the performance of …
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Integration of pentacene-based thin film transistors via photolithography for low and high voltage applications
An organic thin film transistor (OTFT) technology platform has been developed for flexible integrated circuits applications. OTFT performance is tuned by engineering the dielectric constant of the gate insulator and the insulator/semiconductor interface. Full integration is enabled by a low …
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Influence of Structural Disorder on Charge Transport and Stability in Organic Field-Effect Transistors with Molecular Semiconductors
Organic semiconductors (OSCs) are distinguished by the soft van der Waals interactions among π-conjugated moieties, garnering substantial interest for potential use in large-area and flexible electronics due to their inherent lightweight, versatile processing capabilities, and compatibility with …
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Towards cheap, portable and reliable OFET-based biochemical sensors
Over the past two decades, organic thin-film transistors (OTFTs) have been extensively investigated for biochemical sensing applications: from ion-sensitive devices to enzymatic, immunological, and genetic sensors. In this field, largely driven by the demand for low-cost, disposable devices …
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