Time-of-flight measurements and vertical transport in a high electron-mobility polymer
- We investigate charge transport in a high-electron mobility polymer, poly(N, N-bis 2-octyldodecyl-naphthalene-1,4,5,8-bis dicarboximide-2,6-diyl-alt-5,5-2,2-bithiophene) [P(NDI2OD-T2), Polyera ActivInk (TM) N2200]. Time-of-flight measurements reveal electron mobilities approaching those measured in field-effect transistors, the highest ever recorded in a conjugated polymer using this technique. The modest temperature dependence and weak dispersion of the transients indicate low energetic disorder in this material. Steady-state electron-only current measurements reveal a barrier to injection of about 300 meV. We propose that this barrier is located within the P(NDI2OD-T2) film and arises from molecular orientation effects.
| Author details: | James C. Blakesley, Marcel SchubertORCiD, Robert Steyrleuthner, Zhihua Chen, Antonio Facchetti, Dieter NeherORCiDGND |
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| DOI: | https://doi.org/10.1063/1.3657827 |
| ISSN: | 0003-6951 |
| Title of parent work (English): | Applied physics letters |
| Publisher: | American Institute of Physics |
| Place of publishing: | Melville |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2011 |
| Publication year: | 2011 |
| Release date: | 2017/03/26 |
| Volume: | 99 |
| Issue: | 18 |
| Number of pages: | 3 |
| Funding institution: | German Federal Ministry of Science and Education (BMBF) [FKZ 03X3525D]; German Research Foundation (DFG) [SPP 1355] |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| Peer review: | Referiert |
