Related Experiment Video
Updated: May 24, 2026

Functionalization of Single-walled Carbon Nanotubes with Thermo-reversible Block Copolymers and Characterization by Small-angle Neutron Scattering
Published on: June 1, 2016
Water-soluble polythiophene-single walled carbon Nanotube bulk heterojunction
1Department of Electrical Engineering, Korea Army Academy, Yeong-Cheon, Kyoungbuk, 770-849, Republic of Korea.
Abstract:
Two symmetrical terminal electrodes made of indium tin oxide (ITO) were employed to study the current-voltage characteristics of a bulk-heterojunction consisting of water soluble polythiophene and single walled carbon nanotubes (SWCNT). However, the current-voltage curves were asymmetrical, attributed to the polarization induced by the initial bias voltage. The polymer-SWCNT heterojunction were superior to the pristine polymer in both dark conductivity and photoconductivity by two orders of magnitude. Additionally, the open-cell voltage of 0.075 V was observed from the heterojunction even though the electrodes were symmetrical. The high conductivity and photoresponse originated from the high conductivity, high interconnectivity and hole doping capability of CNT.

