FABRICATION AND STUDY OF THE OPTICAL PROPERTIES  OF Eu3+-DOPED ZnSe SEMICONDUCTOR QUANTUM DOTS,  APPLICATION IN LIGHTING

Nguyễn Thị Minh Thủy

doi:10.34238/tnu-jst.11186

FABRICATION AND STUDY OF THE OPTICAL PROPERTIES OF Eu3+-DOPED ZnSe SEMICONDUCTOR QUANTUM DOTS, APPLICATION IN LIGHTING

About this article

Received: 26/09/24 Revised: 29/10/24 Published: 30/10/24

Authors

Nguyen Thi Minh Thuy , TNU - University of Education

Abstract

This paper presents the process of fabrication and study of the structure and optical properties of ZnSe quantum dots doped with Eu³⁺ ions at concentrations of 0%, 1%, 3%, and 5%. The purpose of this paper is to investigate the influence of Eu³⁺ ion concentration on the structure, absorption, and fluorescence emission properties of the material. The samples were synthesized by wet chemical method and studied by X-ray diffraction (XRD), compositional analysis (EDX), UV-Vis absorption spectroscopy, fluorescence excitation spectroscopy, and photoluminescence (PL) spectroscopy. The XRD results showed that all samples had cubic crystal structures. The UV-Vis absorption spectra showed a shift of the absorption peak toward longer wavelengths when the Eu³⁺ concentration increased, demonstrating the influence of Eu³⁺ ions on the energy band structure of ZnSe QDs. The PL spectra of Eu³⁺-doped ZnSe QDs showed characteristic emission of Eu³⁺ ions and broadened emission band toward red light compared to undoped ZnSe QDs. This result shows the potential application of Eu³⁺-doped ZnSe QDs in the field of lighting.

Keywords

Quantum dots; ZnSe; Rare earth; Optical properties; Eu3+

Full Text:

PDF (Tiếng Việt)

References

[1] S. Jayalakshmi, M. Mariappan, M. Djanaguiraman, and A. Veerappan, “Aqueous soluble zinc selenide quantum dots for rapid detection of lead in water, fruit juices and biological fluids,” Optical Materials, vol. 149, p. 115080, 2024.

[2] M. Gao, H. Yang, H. Shen, Z. Zeng, F. Fan, B. Tang, J. Min, Y. Zhang, Q. Hua, L. S. Li, B. Ji, and Z. Du, “Bulk-like ZnSe quantum dots enabling efficient ultranarrow blue light-emitting diodes,” Nano Lett, vol. 21, no. 17, pp. 7252-7260, 2021.

[3] D. Li, X. He, L. Zhao, H. Li, Y. Zhao, S. Zhang, X. Zhang, J. Chen, Q. Jin, and J. Xu, “The interaction between semiconductor ZnSe quantum dots and graphene oxide: Ultrafast charge transfer dynamics,” Journal of Luminescence, vol. 252, p. 119422, 2022.

[4] C. C. Khong, T. M. T. Nguyen, X. Fan, V. H. Pham, K. Q. Le, T. T. H. Trinh, T. K. Nguyen, T. K. V. Nguyen, T. H. Nguyen, N. D. Lo, and X. C. Nguyen, “Optical properties, Judd-Ofelt analysis and energy transfer processes of Eu³⁺ doped ZnS quantum dots,” Chemical Physics Letters, vol. 832, p.140896, 2023.

[5] M. T. Pham, X. C. Nguyen, T. H. Nguyen, H. T. Van, V. D. Phan, D. T. Luong, H. Y. Vu, P. T. Vu, Y. Peng, and T. T. Pham, “New insights on the energy transfer mechanisms of Eu-doped CdS quantum dots,” Phys. Chem. Chem. Phys., vol. 22, p. 6266, 2020.

[6] T. H. Nguyen, Y. Y. Yu, K. C. Park, X. C. Nguyen, T. K. C. Tran, T. T. H. Bui, D. T. Luong, V. D. Phan, M. T. Pham, and T. T. H. Pham, “Influence of Eu doping on the structural and optical properties of Zn_1-xEu_xSe quantum dots,” Journal of Physics and Chemistry of Solids, vol. 148, p. 109729, 2021.

[7] J. Y. Park, C. G. Lee, H. W. Seo, D. W. Jeong, M. Y. Kim, W. B. Kim, and B. S. Kim, “Structural and optical properties of ZnSe:Eu/ZnS quantum dots depending on interfacial residual europium,” Applied Surface Science, vol. 429, no. 31, pp. 225-230, 2018.

[8] S. Mathew, K. V. A. Kumar, C. Sudarsanakumar, V. P. N. Nampoori, and N. V. Unnikrishnan, "Local symmetry and Z-scan analysis of ZnSe/Eu³⁺ doped sol–gel silica hosts," Canadian Journal of Physics, vol. 88, no. 7, pp. 479-486, 2010.

[9] N. Liu, W. Zhou, L. Xu, L. Tong, J. Zhou, W. Su, Y. Yu, and Z. Ma, "Enhanced luminescence of ZnSe:Eu^{3 +}/ZnS core–shell quantum dots," Journal of Non-Crystalline Solids, vol. 358, no. 17, pp. 2353-2356, 2012.

[10] A. Shamsi and S. Hashemian, “Nano spinels of copper-doped cobalt aluminate (Co_xCu_1–x Al₂O₄) for removal of Cd(II) from aqueous solutions,” Desalination and Water Treatment, vol. 181, pp. 346-354, 2020.

[11] U. B. Memon, U. Chatterjee, M. N. Gandhi, S. Tiwari, and S. P. Duttagupta, “Synthesis of ZnSe quantum dots with stoichiometric ratio difference and study of its optoelectronic property,” Procedia Materials Science, vol. 5, pp. 1027-1033, 2014.

[12] R. W. Meulenberg, J. R. I. Lee, A. Wolcott, J. Z. Zhang, L. J. Terminello, and T. Buuren, “Determination of the exciton binding energy in CdSe quantum dots,” ACS Nano, vol. 3, no. 2, pp. 325-330, 2009.

DOI: https://doi.org/10.34238/tnu-jst.11186

Refbacks

There are currently no refbacks.



Remember me