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 8 of 8 for “"IDT-BT"”.
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An investigation into vibrational dynamics in organic semiconductors
… Dioctyl[1]benzothieno[3,2-b][1]benzothiophene (C8-BTBT) and 2,8-Difl uoro-5,11-bis(triethylsilylethynyl)anthradithiophene (dif-TES-ADT). Charge transport in conjugated polymers is strongly affected by energetic disorder arising from spatial variations in backbone conformation. I combine vacuum …
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Spin and Charge Dynamics in Organic Semiconductors
… in chapter 3. We present the full process of obtaining and characterising spintronics appropriate metal phthalocyanines and present the first ever room-temperature LST measurements on metal phthalocyanines. We furthermore present the most recent challenges and reason which experiments could be …
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Improving the Stability of Organic Field-Effect Transistors
… polymer indacenodithiophene-co-benzothiadiazole (IDT-BT) as our model system due to its low energetic disorder and high reported mobilities exceeding 1 cm<sup>2</sup>V<sup>−1</sup>s<sup>−1</sup>. Since stability studies require an exceptional level of reproducibility, we investigated the influence …
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Charge Transport in Field-Effect and Ion-Gel Gated Conjugated Polymers
… the benchmark low disorder polymer semiconductor IDT-BT were synthesised. To create the derivatives, a number of modifications were made to the acceptor unit, donor unit, molecular weight or side chains. The modifications resulted in two polymers, IDT-BS and TIF-BT, which when properly optimised, …
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Charge transport mechanism within 2D material films and its role on field effect transistor and capacitor technology
… MoS2(n-type metal-oxide-semiconductor, NMOS) and IDT-BT (p-type metal-oxide- semiconductor, PMOS). The MoS2 and IDT-BT transistors demonstrated an Ion/Io f f ratio of ≈ 50 and ≈ 103, while the mobility (μFE ) was measured as ≈ 0.06 ± 0.02 cm2 and ≈ 2.7 x 10−4 ± 5x 10−5 cm2 V−1 respectively. When …
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Stabilising Semiconducting Polymers Using Solid State Molecular Additives
… can be improved in both p-type diF-TES ADT and IDT-BT organic field effect transistors by incorporating solid state small molecular additives. Simulations predict that the additives improve stability by introducing a competitive recombination pathway in order to prevent the trapping of electrons …
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Understanding emergence of supramolecular chirality in lyotropic conjugated polymers
… N2200 and newly designed rigid polymers such as IDT-BT. I propose that this phenomenon is thermodynamically driven, with polymer fibers adopting helical conformations to maximize system entropy. Using molecular design and machine learning, I identify key molecular features that govern this …
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The Hall Effect for Probing Conjugated Polymer Charge Transport in High Carrier Density Regimes
… on data measured from ion-exchange doped PBTTT, P3HT and IDT-BT, as well as electrochemically gated DPP-BTz, several interesting results were determined. These include values, such as the hopping temperature coefficient for PBTTT, that indicated these polymer systems exhibit a greater …