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

Authors

S. Hridya

V.S. Kavitha

S.R. Chalana

R. Reshmi Krishnan

R. Sreeja Sreedharan

S. Suresh

V.P.N. Nampoori

S. Sankararaman

Radhakrishna Prabhu

V.P. Mahadevan Pillai

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.

Journal Article Type Article
Publication Date Nov 30, 2017
Journal JOM: journal of the Minerals, Metals and Materials Society
Print ISSN 1047-4838
Electronic ISSN 1543-1851
Publisher Springer (part of Springer Nature)
Peer Reviewed Peer Reviewed
Volume 69
Issue 11
Pages 2272-2277
Institution 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
DOI https://doi.org/10.1007/s11837-017-2360-4
Keywords Thin films; Sputtering; Dysprosium doping

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