The carrier transport of carefully purified regioregular poly(3-hexylthiophene) films has been studied using time-of-flight photocurrent measurements. We find balanced ambipolar transport with a room-temperature mobility for holes of and for electrons of at electric fields . The transport is relatively field independent and weakly temperature dependent, pointing to a high degree of chemical regioregularity and purity. These factors make poly(3-hexylthiophene) attractive for use in a range of electronic applications.
High ambipolar and balanced carrier mobility in regioregular poly(3-hexylthiophene)
S. A. Choulis, Y. Kim, J. Nelson, D. D. C. Bradley, M. Giles, M. Shkunov, I. McCulloch; High ambipolar and balanced carrier mobility in regioregular poly(3-hexylthiophene). Appl. Phys. Lett. 25 October 2004; 85 (17): 3890–3892. https://doi.org/10.1063/1.1805175
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