Nonlinear transport in semiconducting polymers at high carrier densities
Source abstract
Abstract
Conducting and semiconducting polymers are important materials in the development of printed, flexible, large-area electronics such as flat-panel displays and photovoltaic cells. There has been rapid progress in developing conjugated polymers with high transport mobility required for high-performance field-effect transistors (FETs), beginning with mobilities around 10(-4) cm(2) V(-1) s(-1) to a recent report of 1 cm(2) V(-1) s(-1) for poly(2,5-bis(3-tetradecylthiophen-2-yl)thieno[3,2-b]thiophene) (PBTTT). Here, 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. We show that data obtained using a wide range of parameters (temperature, gate-induced carrier density, source-drain voltage and doping level) scale onto the universal curve predicted for transport in the Luttinger liquid description of the one-dimensional 'metal'.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Organic Electronics and Photovoltaics · Molecular Junctions and Nanostructures · Nanowire Synthesis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (20)
Show source-provided references
1. Burroughes, J. H., Jones, C. A. & Friend, R. H. New semiconductor device physics in polymer diodes and transistors. Nature 335, 137–141 (1988).10.1038/335137a0 ↗
2. Hamadani, B. H. et al. Undoped polythiophene field-effect transistors with mobility of 1 cm2 V−1 s−1. Appl. Phys. Lett. 91, 243512 (2007).10.1063/1.2824845 ↗
3. Mcculloch, I. et al. Liquid-crystalline semiconducting polymers with high charge-carrier mobility. Nature Mater. 5, 328–333 (2006).10.1038/nmat1612 ↗
4. DeLongchamp, D. M. et al. High carrier mobility polythiophene thin films: Structure determination by experiment and theory. Adv. Mater. 19, 833–837 (2007).10.1002/adma.200602651 ↗
5. Northrup, J. Atomic and electronic structure of polymer organic semiconductors: P3HT, PQT, and PBTTT. Phys. Rev. B 76, 245202 (2007).10.1103/PhysRevB.76.245202 ↗
6. Voit, J. One-dimensional Fermi liquids. Rep. Prog. Phys. 58, 977–1116 (1995).10.1088/0034-4885/58/9/002 ↗
7. Schulz, H. J., Cuniberti, G. & Pieri, P. Field Theories for Low-Dimensional Condensed Matter Systems Ch. 2 (Springer, 2000).
8. Haldane, F. D. M. ‘Luttinger liquid theory’ of one-dimensional quantum fluids. I. Properties of the Luttinger model and their extension to the general 1D interacting spinless Fermi gas. J. Phys. C 4, 2585–2609 (1981).10.1088/0022-3719/14/19/010 ↗
9. Kane, C. L. & Fisher, M. P. A. Transport in a one-channel Luttinger liquid. Phys. Rev. Lett. 68, 1220–1223 (1992).10.1103/PhysRevLett.68.1220 ↗
10. Balents, L. Orthogonality catastrophes in carbon nanotubes. Preprint at (1999).
11. Bockrath, M. et al. Luttinger-liquid behaviour in carbon nanotubes. Nature 397, 598–601 (1999).10.1038/17569 ↗
12. Yao, Z., Postma, H. W. C., Balents, L. & Dekker, C. Carbon nanotube intramolecular junctions. Nature 402, 273–276 (1999).10.1038/46241 ↗
13. Monteverde, M. et al. Tomonaga–Luttinger liquid and Coulomb blockade in multiwall carbon nanotubes under pressure. Phys. Rev. Lett. 97, 176401 (2006).10.1103/PhysRevLett.97.176401 ↗
14. Slot, E., Holst, M. A., van der Zant, H. S. J. & Zaitsev-Zotov, S. V. One-dimensional conduction in charge-density-wave nanowires. Phys. Rev. Lett. 93, 176602 (2004).10.1103/PhysRevLett.93.176602 ↗
15. Venkataraman, L., Hong, Y. S. & Kim, P. Electron transport in a multichannel one-dimensional conductor: Molybdenum selenide nanowires. Phys. Rev. Lett. 96, 076601 (2006).10.1103/PhysRevLett.96.076601 ↗
16. Aleshin, A. N., Lee, H. J., Park, Y. W. & Akagi, K. One-dimensional transport in polymer nanofibers. Phys. Rev. Lett. 93, 196601 (2004).10.1103/PhysRevLett.93.196601 ↗
17. Dhoot, A. S., Wang, G. M., Moses, D. & Heeger, A. J. Voltage-induced metal–insulator transition in polythiophene field-effect transistors. Phys. Rev. Lett. 96, 246403 (2006).10.1103/PhysRevLett.96.246403 ↗
18. Kaiser, A. B. & Park, Y. W. Conduction mechanisms in polyacetylene nanofibres. Curr. App. Phys. 2, 33–37 (2002).10.1016/S1567-1739(01)00105-5 ↗
19. Aleshin, A. et al. Non-Ohmic conduction in polydiacetylene thin films. Curr. Appl. Phys. 5, 85–89 (2005).10.1016/j.cap.2003.11.087 ↗
20. Yuen, J. D. et al. Electrochemical doping in electrolyte-gated polymer transistors. J. Am. Chem. Soc. 129, 14367–14371 (2007).10.1021/ja0749845 ↗