Electrodeposited Iron(III) Oxide (α-Fe2O3) Thermoelectric Thin Films


Shaiful Azni, Mohd Zuhri and Ho, Kee Ta and Pei, Ling Low and Devaraj, Nisha Kumari and Boon, Hoong Ong and Teck, Yong Tou (2016) Electrodeposited Iron(III) Oxide (α-Fe2O3) Thermoelectric Thin Films. Key Engineering Materials, 701. pp. 23-27. ISSN 1662-9795

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α-Fe2O3 thermoelectric thin films were electrodeposited onto copper substrates using chloride-based electrolytes by means of potentiostatic electrodeposition. The influence of several electrodeposition parameters on the surface morphology, elemental composition and electrical conductivity of the deposited films was studied and analyzed. The deposits formed porous, wire-like morphology, with the smallest width measured to be ~60 nm. The wires tend to aggregate to form clusters, in addition to multi-layered growth of the wires. Between the parameters studied, electrolyte concentration and deposition time parameters have higher influences on the electrical conductivity of the deposited films, with the increment up to two fold higher. Deposition potential parameter offered the lowest capability to improve on the electrical conductivity in addition to the non-uniform distribution of the measured electrical conductivities. The tunable electrical conductivity is favorable for improving the performance of α-Fe2O3 films for thermoelectric applications.

Item Type: Article
Uncontrolled Keywords: Electrical Conductivity, Electrodeposition, Hematite, Thermoelectric, α-Fe2O3
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2896-2985 Production of electricity by direct energy conversion
Divisions: Faculty of Engineering (FOE)
Depositing User: Ms Rosnani Abd Wahab
Date Deposited: 15 Jul 2020 03:07
Last Modified: 15 Jul 2020 03:07
URII: http://shdl.mmu.edu.my/id/eprint/6781


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