Speaker
Ms
Ladavan Kaewphaisan
(Materials Science and Nanotechnology Program, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
Description
WS${}_2$ nanoparticles and multiwalled carbon nanotubes (MWNTs) were hydrothermally prepared and used as a counter electrode (CE) for dye-sensitized solar cells (DSSCs). The highest energy conversion efficiency of 6.69 % was achieved from the produced WS${}_2$/MWNT CE, closely comparable to that of the Pt CE which was 7.34 %, whereas the pure MWNT based DSSC gave the efficiency of 5.2 %. The WS${}_2$ nanoparticles therefore played a crucial role in this enhanced cell efficiency. This superior efficiency was attributed to the combination of the high catalytic activity of the WS${}_2$ nanoparticles and the high electric conductivity of the MWNTs, which were investigated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) measurement, respectively.
Primary author
Ms
Ladavan Kaewphaisan
(Materials Science and Nanotechnology Program, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
Co-authors
Samuk Pimanpang
(Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
Viyada Harnchana
(Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
