Room-temperature bandlike transport and Hall effect in a high-mobility ambipolar polymer

  title={Room-temperature bandlike transport and Hall effect in a high-mobility ambipolar polymer},
  author={Satyaprasad P.Senanayak and A.Z.Ashar and Catherine Kanimozhi and Satish Patil and K.S.Narayan},
  journal={Physical Review B},
The advent of a new class of high-mobility semiconducting polymers opens up a window to address fundamental issues in electrical transport mechanism such as transport between localized states versus extended state conduction. Here, we investigate the origin of the ultralow degree of disorder $({E}_{a}\ensuremath{\sim}16\phantom{\rule{0.16em}{0ex}}\mathrm{meV})$ and the ``bandlike'' negative temperature ($T$) coefficient of the field effect electron mobility: ${\ensuremath{\mu}}_{\mathrm{FET… 
Temperature dependent carrier mobility in organic field-effect transistors: The role of dielectrics
It has been shown that the use of a ferroelectric dielectric in 6,13-bis(triisopropylsilylethynyl)pentacene (TIPS-pentacene) field-effect transistors (FETs) results in a negative coefficient of
Effect of temperature on hysteresis of dipolar dielectric layer based organic field-effect transistors: A temperature sensing mechanism
Abstract This study investigates the effect of measurement temperature on the hysteresis of organic field-effect transistors (OFETs) under vacuum and humidity conditions (∼65% RH). OFETs were
Microstructural control suppresses thermal activation of electron transport at room temperature in polymer transistors
It is shown that precise processing of a diketopyrrolopyrrole-tetrafluorobenzene-based electron transporting copolymer results in single crystal-like and voltage-independent mobility with vanishing activation energy above 280 K.
Polarization-induced transport in organic field-effect transistors: the role of ferroelectric dielectrics
  • S. Guha, A. Laudari
  • Materials Science, Engineering
    Organic Photonics + Electronics
  • 2017
The ferroelectric nature of polymer ferroelectrics such as poly(vinylidene fluoride) (PVDF) has been known for over 45 years. However, its role in interfacial transport in organic/polymeric
2D coherent charge transport in highly ordered conducting polymers doped by solid state diffusion.
It is shown that in the highly ordered lamellar microstructure of a regioregular thiophene-based conjugated polymer, a small-molecule p-type dopant can be incorporated by solid state diffusion into the layers of solubilizing side chains without disrupting the conjugate layers.
Polarization-Induced Transport: A Comparative Study of Ferroelectric and Non-Ferroelectric Dielectric-Gated Organic Field-Effect Transistors
A comparative study of ferroelectric and non-ferroelectric-gated organic field-effect transistors (FETs) have been carried out by using a small molecule semiconductor 6,13
Current‐Induced Joule Heating and Electrical Field Effects in Low Temperature Measurements on TIPS Pentacene Thin Film Transistors
The channel temperature (Tch) of solution-processed 6,13-bis(triisopropylsilylethynyl)-pentacene (TIPS pentacene) thin film transistors (TFTs) is closely monitored in real time during current–voltage
Self-Assembled Photochromic Molecular Dipoles for High-Performance Polymer Thin-Film Transistors.
A tunable approach to fabricate high-performance multifunctional polymer-based electronic circuits based on rationally designed dielectric super-lattice structures with photochromic azobenzene molecules by demonstrating a 3-fold increase in the capacitance of the ultrathin nanodielectric.
Noncovalent semiconducting polymer monolayers for high-performance field-effect transistors
Abstract: In recent years, noncovalently assembled monolayers of conjugated, semiconducting polymers with thickness less than 5 nm have attracted increasing attention because of their determining
Anisotropic Charge-Carrier Transport in High-Mobility Donor-Acceptor Conjugated Polymer Semiconductor Films.
Highly oriented polymer films will further influence the carrier transport anisotropy and promote carrier transport along the backbone, and the performance of the field-effect transistor is thus improved.


Intrinsic hole mobility and trapping in a regioregular poly(thiophene)
The transport properties of high-performance thin-film transistors (TFT) made with a regio-regular poly(thiophene) semiconductor (PQT-12) are reported. The room-temperature field-effect mobility of
Nonlinear transport in semiconducting polymers at high carrier densities.
The electrical properties of PBTTT are studied at high charge densities both as the semiconductor layer in FETs and in electrochemically doped films to determine the transport mechanism.
Intrinsic and extrinsic influences on the temperature dependence of mobility in conjugated polymers
The temperature dependence of charge carrier mobility in conjugated polymers and their blends with fullerenes is investigated with different electrical methods, through field effect transistor (FET),
Unification of trap-limited electron transport in semiconducting polymers.
It is observed for this materials class that electron transport is limited by traps that exhibit a gaussian energy distribution in the bandgap, which indicates that the electron traps have a common origin that, it is suggested, is most likely related to hydrated oxygen complexes.
Two-Dimensional Carrier Distribution in Top-Gate Polymer Field-Effect Transistors: Correlation between Width of Density of Localized States and Urbach Energy
A general semiconductor-independent two-dimensional character of the carrier distribution in top-gate polymer field-effect transistors is revealed by analysing temperature-dependent transfer
Spectroscopic investigation of oxygen- and water-induced electron trapping and charge transport instabilities in n-type polymer semiconductors.
The degradation mechanisms identified here should be considered to explain electron trapping in other rylene diimides and possibly in other classes of conjugated polymers as well.
Tuning orbital energetics in arylene diimide semiconductors. materials design for ambient stability of n-type charge transport.
Analysis of the molecular geometries and energetics in these materials reveals a correlation between electron mobility and substituent-induced arylene core distortion, while Vth and I(off) are generally affected by LUMO ener getics.
Electrical instabilities in organic semiconductors caused by trapped supercooled water
It is reported that the electrical instability known as bias stress is caused by the presence of trapped water in the organic layer. Experimental evidence as provided by the observation of an anomaly
Temperature- and density-dependent channel potentials in high-mobility organic field-effect transistors
The density-dependent charge-carrier mobility in high-mobility organic field-effect transistors is investigated by simultaneous measurements of the channel potential and the transfer characteristic
Diketopyrrolopyrrole-diketopyrrolopyrrole-based conjugated copolymer for high-mobility organic field-effect transistors.
The synthesis of a novel DPP-DPP copolymer in combination with the demonstration of transistors with extremely high electron mobility makes this work an important step toward a new family of DPP -DPPCopolymers for application in the general area of organic optoelectronics.