Back to Search Start Over

Time-of-flight measurements and vertical transport in a high electron-mobility polymer.

Authors :
Blakesley, James C
Schubert, Marcel
Steyrleuthner, Robert
Chen, Zhihua
Facchetti, Antonio
Neher, Dieter
Source :
Applied Physics Letters. 10/31/2011, Vol. 99 Issue 18, p183310. 3p. 3 Graphs.
Publication Year :
2011

Abstract

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. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00036951
Volume :
99
Issue :
18
Database :
Academic Search Index
Journal :
Applied Physics Letters
Publication Type :
Academic Journal
Accession number :
67044157
Full Text :
https://doi.org/10.1063/1.3657827