INFLUENCE OF ANNEALING TEMPERATURES ON STRUCTURAL AND OPTICAL PROPERTIES OF ION Er3+ DOPED ZnO/SiO2 NANOCOMPOSITE FILMS

  • Le Thi Thu Hien Department of Basic Science, Hung Yen University of Technology and Education
  • Le My Phuong Viet Nam Maritime University, Hai Phong, Viet Nam
  • Le Thi Hue Nguyen Mong Tuan High School, Rung Thong Town, Dong Son District, Thanh Hoa Province
Keywords: ZnO/SiO2 nanocomposite, Rare earth dopant, Sol–gel, Energy transfer, Erbium

Abstract

In this study, we report the influence of annealing temperature on morphology, microstructures, and optical properties of ion Er3+ doped ZnO–SiO2 nanocomposites thin films. Thin layers of ZnO–SiO2 nanocomposites doped with Er3+ were prepared by sol-gel method and spin-coating process. The structure and morphology of the thin films as a function of annealing temperature were studied and analyzed by X-ray diffraction (XRD) and scanning electron microscope (SEM). Upon annealing temperatures at 700 oC, we observed emission peaks at around 1540 nm assigned for the 4I13/2 -4I15/2 transition of Er3+ ions. Energy transfer processes upon photon absorptions within ZnO nanocrystals and Eu3+ ions are discussed via photoluminescence spectrum in the range of excitation wavelength 325 nm.

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Published
2021-06-30
How to Cite
Le Thi Thu Hien, Le My Phuong, & Le Thi Hue. (2021). INFLUENCE OF ANNEALING TEMPERATURES ON STRUCTURAL AND OPTICAL PROPERTIES OF ION Er3+ DOPED ZnO/SiO2 NANOCOMPOSITE FILMS. UTEHY Journal of Science and Technology, (30), 73-78. Retrieved from http://tapchi.utehy.edu.vn/index.php/jst/article/view/459