Fatma Unal, Faruk Kaya, and Kursat Kazmanli, Synthesis, characterization and radioluminescence properties of erbium-doped yttria phosphors, Int. J. Miner. Metall. Mater. https://doi.org/10.1007/s12613-021-2269-3
Cite this article as:
Fatma Unal, Faruk Kaya, and Kursat Kazmanli, Synthesis, characterization and radioluminescence properties of erbium-doped yttria phosphors, Int. J. Miner. Metall. Mater. https://doi.org/10.1007/s12613-021-2269-3
Research Article

Synthesis, characterization and radioluminescence properties of erbium-doped yttria phosphors

+ Author Affiliations
  • Received: 14 December 2020Revised: 18 February 2021Accepted: 21 February 2021Available online: 22 February 2021
  • In this paper, radioluminescence (RL) behaviour of erbium-doped yttria nanoparticles (Y2O3:Er3+ NPs) which were produced by sol-gel method is reported for future scintillator applications. NPs with dopant rate of 1, 5, 10 and 20 at. % Er were produced and calcined at 800°C, effects of increased calcination temperature on the RL behaviour (1100°C) was also reported. X-ray Diffraction (XRD) results showed that all phosphors had the cubic Y2O3 bixbyite-type structure. The lattice parameters, crystallite sizes and lattice strain values were calculated by Cohen-Wagner (C-W) and Williamson-Hall (W-H) methods, respectively. Additionally, the optimum solubility value of the Er3+ dopant ion in the Y2O3 host lattice was calculated according to Vegard’s law to be approximately 4 at. %, which was experimentally obtained from the 5 at. % Er3+ ion containing solution. Both peak shifts in XRD patterns and X-Ray Photoelectron Spectroscopy (XPS) analyses confirmed that Er3+ dopant ions were successfully incorporated into the Y2O3 host structure. High-Resolution Transmission Electron Microscopy (HRTEM) results verified the average CS values and agglomerated NPs morphologies were revealed. Scanning Electron Microscopy (SEM) results showed the neck formation between the particles due to increased calcination temperature. As a result of the RL measurements under a Cu Kα X-ray radiation (λ=0.154 nm) source with 50 kV and 10 mA beam current, it was determined that the highest RL emission belongs to 5 at. % Er doped sample. In the RL emission spectrum, the emission peaks were observed in the wavelength range of 510-575 nm (2H11/2, 4S3/2-4I15/2, green emission) and 645-690 nm (4F9/2-4I15/2, red emission). The emission peaks at 581, 583, 587, 593, 601, 611 and 632 nm wavelengths were also detected. It was found that both dopant rate and calcination temperature affected the RL emission intensity. The colour shifted from red to green with increasing calcination temperature which was attributed to the increased crystallinity and reduced crystal defects.
  • loading
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Share Article

    Article Metrics

    Article views (213) PDF downloads(18) Cited by()
    Proportional views

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return