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HomeJournal of Nano ResearchJournal of Nano Research Vol. 77Structural, Optical and Ionic Properties of PVA...

Structural, Optical and Ionic Properties of PVA Capped CuS Quantum Dots

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Abstract:

Copper sulphide quantum dots were synthesized by a simple chemical route using ammonia (aq.) as a complexing agent in PVA matrix. Copper acetate monohydrate and thiourea were used as precursors. The particle sizes as obtained from XRD results were found to be in good agreement with those of HRTEM. The UV-Vis. absorption and PL emission spectra exhibited a systematic blue shift of absorption and emission respectively confirming quantum confinement effect in the synthesized quantum dots. The band gap as estimated from Tauc-plot increased from 3.26eV to 3.92eV with change of concentration of complexing agent. The FTIR spectra exhibited Cu-S stretching peaks characteristic of CuS. Ionic contributions of the electrolytic ionic CuS solution as measured by a standard conductivity cell clearly showed the semiconducting behavior of the product material. The synthesized material may be exploited in fabrication of an optoelectronic device in UV-blue region.

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Journal of Nano Research Vol. 77

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Periodical:

Journal of Nano Research (Volume 77)

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119-133

DOI:

https://doi.org/10.4028/p-i9y6sp

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Online since:

March 2023

Authors:

Sanatan Kr. Nath*, Pradip Kumar Kalita

Keywords:

Band Gap, CuS, Ionic Conductivity, Quantum Dots, W-H Plot

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© 2023 Trans Tech Publications Ltd. All Rights Reserved

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