Das, Mahima Ranjan and Mukherjee, Ayan and Maiti, Payel and Das, Sachindranath and Mitra, Partha (2019) Studies on Multifunctional Properties of SILAR Synthesized CuO Thin Films for Enhanced Supercapacitor, Photocatalytic and Ethanol Sensing Applications. Journal of Electronic Materials, 48 (5). pp. 2718-2730. ISSN 0361-5235

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Abstract

CuO thin films were successfully deposited using a simple, cost-effective and nearly room-temperature successive ionic layer adsorption and reaction routes. The material has been characterized using x-ray diffraction, field-emission scanning electron microscopy and transmission electron microscopy. Increase of grain size and decrease of microstrain were observed for a particular level of dipping (30 cycles) and further increase in dipping cycles shows a reverse tendency. The effect of the dipping cycle of the synthesized films on their supercapacitive, photocatalytic and ethanol-sensing performance were investigated. A 30-cycle dipped CuO thin film-based electrode provides a maximum specific capacitance of 585Fg(-1) at the voltage scan rate of 2 mVs(-1) from cyclic voltammetry measurement and 554Fg(-1) at a current density of 1 Ag-1 from the charging to discharging curve. This electrode exhibited long-term cycle stability with 92.3% capacitance retention after 4000 cycles. CuO films synthesized for 30 dipping cycles showed the highest photocatalytic activities with 91.1% degradation of methylene blue under exposure to visible light of 200-W energy in a time duration of 4h. Maximum sensitivity of 67% in the presence of 1500 ppm ethanol at the operating temperature 160 degrees C was obtained for 30 dipping cycles film. Such attractive properties of low cost and facile synthesized CuO thin films makes them a suitable candidate for different commercial applications.

Item Type:	Article
Subjects:	Electronics Engineering Materials
Divisions:	UNSPECIFIED
Depositing User:	Bidhan Chaudhuri
Date Deposited:	14 Nov 2019 07:04
Last Modified:	14 Nov 2019 07:04
URI:	http://cgcri.csircentral.net/id/eprint/4586

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