TY - JOUR
T1 - Time-of-flight measurements and vertical transport in a high electron-mobility polymer
AU - Blakesley, James C.
AU - Schubert, Marcel
AU - Steyrleuthner, Robert
AU - Chen, Zhihua
AU - Facchetti, Antonio
AU - Neher, Dieter
N1 - Funding Information:
This work was financially supported by the German Federal Ministry of Science and Education (BMBF FKZ 03X3525D) and the German Research Foundation (DFG SPP 1355). Polyera Corporation thanks the FlexTech Alliance for N-channel polymer development.
PY - 2011/10/31
Y1 - 2011/10/31
N2 - 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 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.
AB - 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 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.
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U2 - 10.1063/1.3657827
DO - 10.1063/1.3657827
M3 - Article
AN - SCOPUS:80855128059
SN - 0003-6951
VL - 99
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 18
M1 - 183310
ER -