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Spectral modifications and enhancement of red light yield tailored by Y3+ incorporation in the SrGd1.94Eu0.06O4 system

  • Jyoti SinghEmail author
  • Dirk Poelman
  • Vikas Dubey
Article
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Abstract

The enhancement in luminescence efficiency and spectral tuning due to Y3+ incorporation in the SrGd1.94Eu0.06O4 phosphor is reported. An auto-combustion method was adopted to synthesize the samples. The structural, morphological and luminescence properties were examined by means of X-ray diffraction, field-emission scanning electron microscopy (FESEM) and photoluminescence (PL) studies. The substitution of Gd3+ ions by Y3+ ions modulates the sensitizing effects of Gd3+ ions and also causes lattice shrinkage which alters the local crystal structure and improves the red light yield of Eu3+ ions. The spectroscopic modification occurring due to the incorporation of Y3+ ions was investigated with the help of Judd–Ofelt calculations. Temperature dependent PL studies were performed to investigate the thermal stability of the samples. The present research indicates that the SrGd1.94−xYxEu0.06O4 system can be used as a suitable red component for display and lighting applications.

Notes

Acknowledgements

The authors are grateful to Dr. S. K. Sharma and Prof. J. Manam, Department of Applied Physics, IIT (ISM) Dhanbad for PL and Diffuse Reflectance studies. The authors also acknowledge the instrumental facility from CRF IIT (ISM) Dhanbad. The support from Department of Physics, Pune University is also acknowledged. The authors are also thankful to Prof. A. Subrahmanyam and Deepak Kumar, Department of Physics, IIT Madras for their kind support.

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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of Basic and Applied SciencesGalgotias UniversityGreater NoidaIndia
  2. 2.Department of Solid State SciencesGhent UniversityGhentBelgium
  3. 3.Department of PhysicsBhilai Institute of Technology RaipurKendriIndia

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