Effect of Weak Confinement on the Optical Properties of Chemically Synthesized ZnS Nanoparticles
| Authors | K.C. Handique, P.K. Kalita |
| Affiliations |
Rajiv Gandhi University, Department of Physics, Itanagar 791112, Arunachal Pradesh, India |
| Е-mail | kshirud.handique@rgu.ac.in |
| Issue | Volume 12, Year 2020, Number 4 |
| Dates | Received 12 April 2020; revised manuscript received 20 August 2020; published online 25 August 2020 |
| Citation | K.C. Handique, P.K. Kalita, J. Nano- Electron. Phys. 12 No 4, 04015 (2020) |
| DOI | https://doi.org/10.21272/jnep.12(4).04015 |
| PACS Number(s) | 78.67.Bf, 81.07.Bc |
| Keywords | ZnS nanostructure, Weak confinement, W-H plot, PL spectra, Defect induced emission. |
| Annotation |
Zinc sulphide nanostructures have been synthesized with different compositions of Zn/S ratio through chemical route. The XRD shows polycrystalline hexagonal structure for all the samples. The W-H plot shows particle sizes in the range 29.54 nm to 41.36 nm and strain from 0.021 to 0.026. A larger particle size supports weak quantum confinement in the samples. No significant increase in the band gap was found from the optical studies. Using one-dimensional weak confinement model, transition levels for defect emission in the visible region are obtained. |
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