20-22 May 2015
Asia/Bangkok timezone
The Centennial Celebration of General Relativity Theory and 80 Years of Thai Physics Graduate

WS2 Nanoparticles and Multiwalled Carbon Nanotubes Counter Electrode for Dye-sensitized Solar Cells

21 May 2015, 13:00
3h 30m
Board: MNA-50
Poster presentation Material Physics, Nanoscale Physics and Nanotechnology Poster-3

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)

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