TY - JOUR
T1 - Impact of preparation method of TiO2-RGO nanocomposite photoanodes on the performance of dye-sensitized solar cells
AU - Nouri, Esmaiel
AU - Mohammadi, Mohammad Reza
AU - Lianos, Panagiotis
PY - 2016/11/20
Y1 - 2016/11/20
N2 - In this work, a comparative study has been performed on two ex-situ and one in-situ doping of titania photoanodes with reduced graphene oxide. The presence of finely dispersed reduced graphene oxide facilitates electron transport and reduces electron-hole recombination resulting in a better performance of doped titania photoanodes. It was found that in-situ doping, i.e. introduction of graphene oxide in solution together with titania precursor was the most performant case of graphene doping. This result was obvious by studying dye-sensitized solar cells based on such doped photoanodes but was also and mainly analytically demonstrated by subjecting the obtained materials to characterization by several techniques, including thermal and N2 adsorption-desorption analysis, SEM and TEM microscopy and XRD, XPS, Raman, UV–vis, Photoluminescence and Electrochemical Impedance Spectroscopy.
AB - In this work, a comparative study has been performed on two ex-situ and one in-situ doping of titania photoanodes with reduced graphene oxide. The presence of finely dispersed reduced graphene oxide facilitates electron transport and reduces electron-hole recombination resulting in a better performance of doped titania photoanodes. It was found that in-situ doping, i.e. introduction of graphene oxide in solution together with titania precursor was the most performant case of graphene doping. This result was obvious by studying dye-sensitized solar cells based on such doped photoanodes but was also and mainly analytically demonstrated by subjecting the obtained materials to characterization by several techniques, including thermal and N2 adsorption-desorption analysis, SEM and TEM microscopy and XRD, XPS, Raman, UV–vis, Photoluminescence and Electrochemical Impedance Spectroscopy.
KW - dye-sensitized solar cells
KW - ex-situ and in-situ methods
KW - titania-graphene nanocomposites
UR - http://www.scopus.com/inward/record.url?scp=84988970251&partnerID=8YFLogxK
U2 - 10.1016/j.electacta.2016.09.150
DO - 10.1016/j.electacta.2016.09.150
M3 - Article
AN - SCOPUS:84988970251
VL - 219
SP - 38
EP - 48
JO - Electrochimica Acta
JF - Electrochimica Acta
SN - 0013-4686
ER -