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Showing 1 to 10 of 10 for “"PBTTT"”.
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Thermoelectric and charge transport properties in doped and aligned conjugated polymers
… conjugated polymers, particularly PBTTT, through methodologies such as ion-exchange doping, high-temperature rubbing and electrochemical doping. Central to this investigation is a deepened comprehension of the transport physics and the modelling of temperature dependence in doped …
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Thermoelectric Properties and Transport of Semicrystalline Conjugated Polymer and Single-Wall Carbon Nanotube Composites
… bis(3-alkylthiophen-2-yl)thieno[3,2-b]thiophene) (PBTTT). s-SWCNTs and PBTTT are selected due to their fairly well-studied thermoelectric properties and to achieve a good understanding of their charge transport mechanisms. Through investigating the s-SWCNT:PBTTT model system, some general design …
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Injection, transport and detection of spin currents in organic semiconductors
… of spin pumping into an organic semiconductor PBTTT in vertical and lateral device architectures exploiting inverse spin-Hall effect as the detection method. We have discovered fundamental mistakes in previous publications on this topic and offered a way to rectify them with extended angular …
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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 …
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An investigation into vibrational dynamics in organic semiconductors
… bis(3-alkylthiophene-2-yl)thieno[3,2-b]thiophene (pBTTT), indacenodithiophene-co-benzo-thiadiazole (IDT-BT), diketopyrrolopyrrole-benzotriazole (DPP-BTZ) and naphtalene-bithiophene (NDI-T2) at pressures up to 3.9 GPa. It is shown that Raman spectra of pBTTT and NDI-T2 demonstrate dependence of mode …
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Thermoelectric Properties of Organic Polymers
… s(3-dodecylthiophen-2-yl)thieno[3,2-b]thiophene] (PBTTT) and diketopyrrolopyrrole (DPP)-based polymers. In Chapter 4, we report a new model system for better understanding the key factors governing their thermoelectric properties: aligned, ribbon-phase PBTTT doped by ion-exchange doping. Using a …
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Thermoelectric and Charge Transport in Doped Semi-Crystalline Polymers
… -tetradecylthiophen2-yl)thieno-[3,2-b]thiophene), PBTTT and its derivates are selected in this thesis for the investigation of thermoelectric and charge transport in highly conducting polymers. An unprecedented doping regime can be achieved via ion-exchange doping method, which is already …
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Seebeck coefficient in organic semiconductors
… Seebeck coefficient is modulated in the polymer PBTTT is found to be larger than that in the polymer IDTBT. Taken together with conventional charge transport measurements on IDTBT, the voltage modulated Seebeck coefficient confirms the existence of a vanishingly small energetic disorder in this …
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Charge and Thermoelectric Transport in Semicrystalline Conjugated Polymers and Single-Walled Carbon Nanotube Networks
… of the molecularly doped semicrystalline polymer PBTTT is presented in the high charge density limit, which is relevant for applications in thermoelectric generators. Using the recently reported ion-exchange doping routine charge densities on the order of one carrier per monomer repeat unit can be …
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Water stability of organic and electrolyte-gated field-effect transistors
Organic bioelectronics is an emerging field that utilizes electronic devices made from a large family of aromatic compounds (conjugated polymers and small molecules) for biological applications. Organic materials seem ideal candidates for bioelectronics due to their softness, biocompatibility, …