title: Water-soluble polythiophene-single walled carbon Nanotube bulk heterojunction.
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.
authors.affiliation: Department of Electrical Engineering, Korea Army Academy, Yeong-Cheon, Kyoungbuk, 770-849, Republic of Korea.
authors.forename: Daeyoung
authors.initials: D
authors.lastname: Kim
authors.forename: Jaewu
authors.initials: J
authors.lastname: Choi