Hu, Yuanyuan, Berdunov, Nikolai, Di, Chong-an, Nandhakumar, Iris, Zhang, Fengjiao, Gao, Xike, Zhu, Daoben and Sirringhaus, Henning (2014) Effect of molecular asymmetry on the charge transport physics of high mobility n-type molecular semiconductors investigated by scanning Kelvin probe microscopy. ACS Nano, 8 (7), 6778-6787. (doi:10.1021/nn500944f).
Abstract
We have investigated the influence of the symmetry of the side chain substituents in high-mobility, solution processable n-type molecular semiconductors on the performance of organic field-effect transistors (OFETs). We compare two molecules with the same conjugated core, but either symmetric or asymmetric side chain substituents, and investigate the transport properties and thin film growth mode using scanning Kelvin probe microscopy (SKPM) and atomic force microscopy (AFM). We find that asymmetric side chains can induce a favorable two-dimensional growth mode with a bilayer structure, which enables ultrathin films with a single bilayer to exhibit excellent transport properties, while the symmetric molecules adopt an unfavorable three-dimensional growth mode in which transport in the first monolayer at the interface is severely hindered by high-resistance grain boundaries
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- Current Faculties > Faculty of Engineering and Physical Sciences > School of Chemistry > Electrochemistry
School of Chemistry > Electrochemistry - Faculties (pre 2018 reorg) > Faculty of Natural and Environmental Sciences (pre 2018 reorg)
- Faculties (pre 2018 reorg) > Faculty of Natural and Environmental Sciences (pre 2018 reorg) > Chemistry (pre 2018 reorg)
Current Faculties > Faculty of Engineering and Physical Sciences > School of Chemistry > Chemistry (pre 2018 reorg)
School of Chemistry > Chemistry (pre 2018 reorg) - Faculties (pre 2018 reorg) > Faculty of Natural and Environmental Sciences (pre 2018 reorg) > Institute for Life Sciences (pre 2018 reorg)
Current Faculties > Faculty of Environmental and Life Sciences > Institute for Life Sciences > Institute for Life Sciences (pre 2018 reorg)
Institute for Life Sciences > Institute for Life Sciences (pre 2018 reorg) - Faculties (pre 2018 reorg) > Faculty of Natural and Environmental Sciences (pre 2018 reorg) > Chemistry (pre 2018 reorg) > Electrochemistry (pre 2018 reorg)
Current Faculties > Faculty of Engineering and Physical Sciences > School of Chemistry > Chemistry (pre 2018 reorg) > Electrochemistry (pre 2018 reorg)
School of Chemistry > Chemistry (pre 2018 reorg) > Electrochemistry (pre 2018 reorg)
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