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Visible and near-infrared up-conversion luminescence of KGd(WO 4 ) 2 micro-crystals doped with Er 3+ , Tm 3+ , Ho 3+ and Yb 3+ ions

Journal of Alloys and Compounds, ISSN: 0925-8388, Vol: 684, Page: 271-281
2016
  • 25
    Citations
  • 0
    Usage
  • 18
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    25
    • Citation Indexes
      25
  • Captures
    18

Article Description

KGd(WO 4 ) 2 micro-crystals doped with Yb 3+ /Er 3+ /Tm 3+, Yb 3+ /Er 3+ /Ho 3+ and Yb 3+ /Tm 3+ /Ho 3+ exhibit multicolor up-conversion luminescence in the VIS and NIR spectral ranges under 980 nm laser diode excitation. These rare earth-doped KGd(WO 4 ) 2 micro-crystalline powders were synthesized using the modified Pechini method. XRD was used to confirm the monoclinic phase of these compounds. The SEM images analysis showed that the average size of the micro-crystals was smaller than 1 μm. The influence of the size and shape of micro-crystals on vibrational properties was investigated for the first time using the μ-Raman spectroscopy. The obtained results suggest that the KGd(WO 4 ) 2 powders doped with Yb 3+ /Er 3+ /Tm 3+, Yb 3+ /Er 3+ /Ho 3+ and Yb 3+ /Tm 3+ /Ho 3+ ions can be successfully used as new phosphors for the up-conversion based optoelectronic devices.

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