Speaker
Mr
ADULPHAN PIMSAWAT
(Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
Description
A NiO film was prepared by heating solution made of nickel acetate dissolved in acetic acid which were drop-casted on a fluorine-doped tin oxide (FTO) substrate. This simple preparation technique has rarely been investigated in the open literatures. The effect of heating temperatures from 250 ${}^{\circ}$C to 500 ${}^{\circ}$C on structural, morphological, electrical and capacitive properties of the films were evaluated. With the increasing temperatures, there were improvement in the crystallinity of NiO and enlargement of NiO's crystallite size, moreover, the films' resistance increased whilst their capacitance values only slightly decreased. The optimum temperature suitable for preparing the NiO film was 300 ${}^{\circ}$C, where the highest capacitance of 150$-$200 F/g were obtain for a symmetrical capacitor made from NiO electrode and 6 M KOH electrolyte solution.
Author
Mr
ADULPHAN PIMSAWAT
(Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
Co-authors
Dr
Apishok Tangtrakarn
(Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
Sujittra Daengsakul
(Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, THAILAND 40002)
