TY - JOUR
T1 - The physical/chemical properties and electrode performance variations of SWNT films in consequence of solution based surfactant elimination processes
AU - Yun, Dong Jin
AU - Kim, Jung Min
AU - Ra, Hyemin
AU - Byun, Sunjung
AU - Kim, Hyunsuk
AU - Park, Gyeong Su
AU - Park, Sunghoon
AU - Rhee, Shi Woo
PY - 2013
Y1 - 2013
N2 - The effects of the surfactant elimination from single wall carbon tube (SWNT) films on the physical/electrical properties of SWNT films are concretely studied. The surfactant, which helps to disperse the SWNTs in polar solvent without damage, completely wraps SWNT in film as well as in solution condition and therefore, it still critically precludes from showing up the original characteristics of SWNT material. However, after the stepwise dipping processes in deionized water and acid solution, the properties of SWNT film become close to the SWNT characteristics according to the surfactant elimination. Compared to as-deposited SWNT film, the optical transmittance, surface roughness and resistivity noticeably increase after surfactant elimination processes and besides, the acid solution treatment generates the partially functionalization (-OH or -COOH group introduction) of SWNTs. Because the functionalization of SWNT increases the work function as well as number of catalytic, those have highly positive influences on the performances of electrodes for organic devices. Actually, compared to as-deposited or deionized water treated SWNT film, the HNO3 treated SWNT film shows higher performance as source/drain electrode in organic thin film transistor and catalytic cathode electrode in dye sensitized solar cell.
AB - The effects of the surfactant elimination from single wall carbon tube (SWNT) films on the physical/electrical properties of SWNT films are concretely studied. The surfactant, which helps to disperse the SWNTs in polar solvent without damage, completely wraps SWNT in film as well as in solution condition and therefore, it still critically precludes from showing up the original characteristics of SWNT material. However, after the stepwise dipping processes in deionized water and acid solution, the properties of SWNT film become close to the SWNT characteristics according to the surfactant elimination. Compared to as-deposited SWNT film, the optical transmittance, surface roughness and resistivity noticeably increase after surfactant elimination processes and besides, the acid solution treatment generates the partially functionalization (-OH or -COOH group introduction) of SWNTs. Because the functionalization of SWNT increases the work function as well as number of catalytic, those have highly positive influences on the performances of electrodes for organic devices. Actually, compared to as-deposited or deionized water treated SWNT film, the HNO3 treated SWNT film shows higher performance as source/drain electrode in organic thin film transistor and catalytic cathode electrode in dye sensitized solar cell.
KW - Dye sensitized solar cell
KW - Electrode
KW - Organic thin film transistor
KW - Single wall carbon nanotube
KW - Surfactant elimination process
UR - http://www.scopus.com/inward/record.url?scp=84884224536&partnerID=8YFLogxK
U2 - 10.1016/j.orgel.2013.08.021
DO - 10.1016/j.orgel.2013.08.021
M3 - Article
AN - SCOPUS:84884224536
SN - 1566-1199
VL - 14
SP - 2962
EP - 2972
JO - Organic Electronics
JF - Organic Electronics
IS - 11
ER -