Study on the structural, morphological and optical properties of RF-sputtered dysprosium-doped barium tungstate thin films.

Hridya, S.; Kavitha, V.S.; Chalana, S.R.; Reshmi Krishnan, R.; Sreeja Sreedharan, R.; Suresh, S.; Nampoori, V.P.N.; Sankararaman, S.; Prabhu, Radhakrishna; Mahadevan Pillai, V.P.

Abstract

Barium tungstate films with different Dy3+ 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{deg}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.

Citation

HRIDYA, S., KAVITHA, V.S., CHALANA, S.R., RESHMI KRISHNAN, R., SREEJA SREEDHARAN, R., SURESH, S., NAMPOORI, V.P.N., SANKARARAMAN, S., PRABHU, R. and MAHADEVAN PILLAI, V.P. 2017. Study on the structural, morphological and optical properties of RF-sputtered dysprosium-doped barium tungstate thin films. JOM: journal of the Minerals, Metals and Materials Society [online], 69(11), pages 2272-2277. Available from: https://doi.org/10.1007/s11837-017-2360-4

• Journal Article Type: Article
• Acceptance Date: Apr 10, 2017
• Online Publication Date: Apr 27, 2017
• Publication Date: Nov 30, 2017
• Deposit Date: May 26, 2017
• Publicly Available Date: Apr 28, 2018
• Journal: JOM: journal of the Minerals, Metals and Materials Society
• Print ISSN: 1047-4838
• Electronic ISSN: 1543-1851
• Publisher: Springer
• Peer Reviewed: Peer Reviewed
• Volume: 69
• Issue: 11
• Pages: 2272-2277
• DOI: https://doi.org/10.1007/s11837-017-2360-4
• Keywords: Thin films; Sputtering; Dysprosium doping
• Public URL: http://hdl.handle.net/10059/2337
• Contract Date: May 26, 2017