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

Chemical Vapor Deposition (CVD) Synthesis of Graphite Encapsulated Magnetite Nanoparticles for Counter Electrode of Dye-sensitized Solar Cells

21 May 2015, 09:30
15m
Phokeethra Grand Ballroom ()

Phokeethra Grand Ballroom

Oral presentation Material Physics, Nanoscale Physics and Nanotechnology Material Physics, Nanoscale Physics and Nanotechnology

Speaker

Sujinda Chaiyachad (Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)

Description

In this project, graphite encapsulated magnetite nanoparticle in carbon matrix was synthesized using a chemical vapor deposition (CVD) and used as a counter electrode of dye-sensitized solar cells (DSSCs). The CVD reaction employed iron(III)nitrate nanohydrate and glucose as precursors, NaCl as a supporting material and methane as a carbon source. The reaction temperature was varied at 700, 750, 780 and 850 ${}^{\circ}$C. The DSSC with the synthesized graphite encapsulated magnetite nanoparticle in carbon matrix counter electrode performed the highest solar cell efficiency of 4.56 %. This was higher than the DSSCs with graphite counter electrode produced by the same CVD condition and that with magnetite nanoparticle counter electrode which were 2.36 % and 1.34 %, respectively, and comparable to that of the DSSC with Pt counter electrode which was 4.72 %. The high performance of the graphite encapsulated magnetite nanoparticle in carbon matrix counter electrode was accounted for a combination of a good electrical conductivity of graphite and carbon matrix and a good catalytic property of magnetite nanoparticles.

Primary author

Sujinda Chaiyachad (Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)

Co-author

Dr Viyada Harnchana (Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)

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