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- Title
Study on the Structural, Morphological and Optical Properties of RF-Sputtered Dysprosium-Doped Barium Tungstate Thin Films.
- Authors
Hridya, S.; Kavitha, V.; Chalana, S.; Reshmi Krishnan, R.; Sreeja Sreedharan, R.; Suresh, S.; Nampoori, V.; Sankararaman, S.; Prabhu, Radhakrishna; Mahadevan Pillai, V.
- Abstract
Barium tungstate films with different Dy doping concentrations, namely 0 wt.%, 1 wt.%, 3 wt.% and 5 wt.%, are deposited on cleaned quartz substrate by radio frequency magnetron sputtering technique and the prepared films are annealed at a temperature of 700°C. The structural, morphological and optical properties of the annealed films are studied using techniques such as x-ray diffraction (XRD), micro-Raman spectroscopy, field emission scanning electron microscopy, atomic force microscopy and photoluminescence spectroscopy. XRD analysis shows that all the films are well-crystallized in nature with a monoclinic barium tungstate phase. The presence of characteristic modes of the tungstate group in the Raman spectra supports the formation of the barium tungstate phase in the films. Scanning electron microscopic images of the films present a uniform dense distribution of well-defined grains with different sizes. All the doped films present a broad emission in the 390-500 nm region and its intensity increases up to 3 wt.% and thereafter decreases due to usual concentration quenching.
- Subjects
OPTICAL properties of barium compounds; TUNGSTATES; X-ray diffraction; MAGNETRON sputtering; THIN films; DYSPROSIUM; RADIO frequency; CRYSTAL morphology
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2017, Vol 69, Issue 11, p2272
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-017-2360-4