Microstructural study of a conducting polymer doped with carbon nanotubes

Examensarbete för masterexamen

Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12380/304366
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Type: Examensarbete för masterexamen
Title: Microstructural study of a conducting polymer doped with carbon nanotubes
Authors: Söderberg, Fredik
Abstract: This work concerns the microsctructure of benzimidazobenzophenanthroline, BBL, films doped with carbon nanotubes, CNTs, to increase the electron mobility of the films. The CNT dopings were 1, 9 and 50 wt% respectively. The microsctructures were studied using electron microscopy including scanning electron microscopy and transmission electron microscopy. The morphology of the films gradually changed from a continuous BBL film with a relatively rough surface morphology in the 1 wt% films with randomly oriented CNTs to a structure with the BBL forming a smooth shell of BBL on the CNTs. The CNTs were multiwalled with a high density of defects. The thickness of the BBL shell was about 20-30 nm in the 1 and 9 wt% films and 3-4 nm in the 50 wt% films. The results show that the electron mobility can be even further increased by aligning the CNTs that have a considerably higher mobility along their long axis and also compared to the BBL. It should be noted that an alignment of the CNTs would also result in a high directional anisotropy of the mobility in the BBL:CNT films.
Keywords: BBL;CNT;SEM;STEM;TEM;SE;doped polymer films;microsctructure
Issue Date: 2021
Publisher: Chalmers tekniska högskola / Institutionen för fysik
URI: https://hdl.handle.net/20.500.12380/304366
Collection:Examensarbeten för masterexamen // Master Theses



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