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L. G. WANG1,* , M. L. LIU1, J. J. ZHU1, L. F. CHENG1
The electron transport and electrical properties in a high-mobility n-type copolymer poly{[N,N'-bis(2-octyldodecyl)- -naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diy1]-alt-5,5'-(2,2'-dithiophene)}[P(NDI2OD-T2),PolyeraActivInkTM N2200] are investigated. It is found that the thickness dependent current density versus voltage ( J-V ) characteristics of N2200 electron-only devices cannot be well described by using the conventional mobility model. However, the thickness dependent and temperature dependent J-V characteristics of N2200 electron-only devices can be accurately described by using our recently introduced improved mobility model only with a single set of parameters. For the material studied, we find the width of the Gaussian density of states 0.083 eV and lattice constant a 0.8 nm. The width of the DOS is considerably smaller than usually obtained for conjugated polymers, indicating a low degree of energetic disorder and small temperature activation. Furthermore, we show that too large or too small values of the boundary carrier density lead to incorrect J-V characteristics..
High-mobility conjugated polymer, Electron transport, Electrical properties.
L. G. WANG, M. L. LIU, J. J. ZHU, L. F. CHENG, Electron transport and electrical properties in a high-mobility n-type conjugated polymer, Optoelectronics and Advanced Materials - Rapid Communications, 11, 3-4, March-April 2017, pp.202-206 (2017).
Submitted at: June 30, 2016
Accepted at: April 6, 2017
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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