Size-Dependent Photoelectrochemical Properties of Nanostructured WO3 Thin Films Synthesized via Electrodeposition Method

Tao Zhu; Meng Nan Chong; Eng Seng Chan

doi:10.4028/www.scientific.net/AMR.1105.269

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1105Size-Dependent Photoelectrochemical Properties of...

Size-Dependent Photoelectrochemical Properties of Nanostructured WO₃ Thin Films Synthesized via Electrodeposition Method

Abstract:

The main aim of this study was to investigate size-dependent effect on the photoelectrochemical properties of nanostructured tungsten trioxide (WO₃) thin films synthesized via electrochemical method. Firstly, the nanostructured WO₃ thin films of different crystalline sizes were synthesized on fluorine-doped tin oxide (FTO) glass working electrodes followed by controlled annealing treatment at temperature of 100-600°C. The resultant nanostructured WO₃ thin films were further characterized using field emission-scanning electron microscopy (FE-SEM) and photocurrent density measurements. Through FE-SEM analysis, it was found that the WO₃ crystalline size increases with increasing annealing temperature that resulted in elevated photocurrent per unit area of the synthesized nanostructured WO₃ thin films. Finally, it was observed that the highest photocurrent density of up to 35μA/cm² was attained for WO₃ crystallines size of 86nm that formed at the annealing temperature of 600°C.

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Periodical:

Advanced Materials Research (Volume 1105)

Pages:

269-273

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1105.269

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Online since:

May 2015

Authors:

Tao Zhu, Meng Nan Chong, Eng Seng Chan

Keywords:

Electrodeposition, Hydrogen Production, Photoelectrocatalysis, Water Splitting, WO₃ Thin Film

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