Facile synthesis, structural characterization, and photoluminescence mechanism of Dy{sup 3+} doped YVO{sub 4} and Ca{sup 2+} co-doped YVO{sub 4}:Dy{sup 3+} nano-lattices

doi:10.1063/1.4880176

Title: Facile synthesis, structural characterization, and photoluminescence mechanism of Dy{sup 3+} doped YVO{sub 4} and Ca{sup 2+} co-doped YVO{sub 4}:Dy{sup 3+} nano-lattices

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Abstract

Light plays a vital role in the evolution of life. From sunlight to candle-light and then to other form of lighting devices, human beings are utilizing light since time immemorial. Lighting devices such as conventional incandescent lamp and fluorescent lamp have been replaced by Light Emitting Diodes (LEDs) for the later is cheap, durable, etc. Now-a-days, phosphor converted LEDs have been burning issues in the fabrication of lighting devices. Especially, lanthanide ion(s) doped phosphors are of great interest for the same. However, doped phosphors have a limitation of luminescence quenching, i.e., instead of increasing luminescence on increasing dopant concentration, the luminescence decreases. Therefore, it must be rectified by one or other means so as to get maximum desirable intensity for uses in display or lighting devices. In the present work, YVO{sub 4}:Dy{sup 3+} and YVO{sub 4}:Dy{sup 3+}/Ca{sup 2+} nano-lattices are synthesized by a facile technique. Structural characterizations such as x-ray diffraction, SEM, TEM, HRTEM, and Selected Area Electron Diffraction (SAED) of the samples are reported. Photoluminescence (PL) excitation and emission, enhanced mechanism, and lifetime are thoroughly discussed. PL intensity of the quenched YVO{sub 4}:Dy{sup 3+} is made increased up to 432.63% by Ca{sup 2+} co-doping. Role of the Ca{sup 2+}more »« less

Authors:

Dhiren Meetei, Sanoujam, E-mail: sdmdhiren@gmail.com; Dorendrajit Singh, Shougaijam, E-mail: dorendrajit@yahoo.co.in, E-mail: mdebensingh@gmail.com ^[1]; Deben Singh, Mutum, E-mail: dorendrajit@yahoo.co.in, E-mail: mdebensingh@gmail.com ^[2]

Department of Physics, Manipur University, Canchipur, Imphal-795003, Manipur (India)
Department of Physics, Thambal Marik College, Oinam-795134, Bishnupur, Manipur (India)

Publication Date:: Wed May 28 00:00:00 EDT 2014

OSTI Identifier:: 22304518

Resource Type:: Journal Article

Journal Name:: Journal of Applied Physics

Additional Journal Information:: Journal Volume: 115; Journal Issue: 20; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CALCIUM ADDITIONS; DOPED MATERIALS; DYSPROSIUM ADDITIONS; ELECTRON DIFFRACTION; EXCITATION; LIFETIME; LIGHT EMITTING DIODES; PHOSPHORS; PHOTOLUMINESCENCE; QUENCHING; SCANNING ELECTRON MICROSCOPY; SYNTHESIS; TRANSMISSION ELECTRON MICROSCOPY; VANADATES; X-RAY DIFFRACTION; YTTRIUM COMPOUNDS

Citation Formats


                    Dhiren Meetei, Sanoujam, E-mail: sdmdhiren@gmail.com, Dorendrajit Singh, Shougaijam, E-mail: dorendrajit@yahoo.co.in, E-mail: mdebensingh@gmail.com, and Deben Singh, Mutum, E-mail: dorendrajit@yahoo.co.in, E-mail: mdebensingh@gmail.com. Facile synthesis, structural characterization, and photoluminescence mechanism of Dy{sup 3+} doped YVO{sub 4} and Ca{sup 2+} co-doped YVO{sub 4}:Dy{sup 3+} nano-lattices.  United States: N. p., 2014. 
        Web.  doi:10.1063/1.4880176.

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                    Dhiren Meetei, Sanoujam, E-mail: sdmdhiren@gmail.com, Dorendrajit Singh, Shougaijam, E-mail: dorendrajit@yahoo.co.in, E-mail: mdebensingh@gmail.com, & Deben Singh, Mutum, E-mail: dorendrajit@yahoo.co.in, E-mail: mdebensingh@gmail.com. Facile synthesis, structural characterization, and photoluminescence mechanism of Dy{sup 3+} doped YVO{sub 4} and Ca{sup 2+} co-doped YVO{sub 4}:Dy{sup 3+} nano-lattices.  United States.  https://doi.org/10.1063/1.4880176

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                    Dhiren Meetei, Sanoujam, E-mail: sdmdhiren@gmail.com, Dorendrajit Singh, Shougaijam, E-mail: dorendrajit@yahoo.co.in, E-mail: mdebensingh@gmail.com, and Deben Singh, Mutum, E-mail: dorendrajit@yahoo.co.in, E-mail: mdebensingh@gmail.com. 2014.  
        "Facile synthesis, structural characterization, and photoluminescence mechanism of Dy{sup 3+} doped YVO{sub 4} and Ca{sup 2+} co-doped YVO{sub 4}:Dy{sup 3+} nano-lattices".  United States.  https://doi.org/10.1063/1.4880176.

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@article{osti_22304518,

  title        = {Facile synthesis, structural characterization, and photoluminescence mechanism of Dy{sup 3+} doped YVO{sub 4} and Ca{sup 2+} co-doped YVO{sub 4}:Dy{sup 3+} nano-lattices},

  author       = {Dhiren Meetei, Sanoujam, E-mail: sdmdhiren@gmail.com and Dorendrajit Singh, Shougaijam, E-mail: dorendrajit@yahoo.co.in, E-mail: mdebensingh@gmail.com and Deben Singh, Mutum, E-mail: dorendrajit@yahoo.co.in, E-mail: mdebensingh@gmail.com},

  abstractNote = {Light plays a vital role in the evolution of life. From sunlight to candle-light and then to other form of lighting devices, human beings are utilizing light since time immemorial. Lighting devices such as conventional incandescent lamp and fluorescent lamp have been replaced by Light Emitting Diodes (LEDs) for the later is cheap, durable, etc. Now-a-days, phosphor converted LEDs have been burning issues in the fabrication of lighting devices. Especially, lanthanide ion(s) doped phosphors are of great interest for the same. However, doped phosphors have a limitation of luminescence quenching, i.e., instead of increasing luminescence on increasing dopant concentration, the luminescence decreases. Therefore, it must be rectified by one or other means so as to get maximum desirable intensity for uses in display or lighting devices. In the present work, YVO{sub 4}:Dy{sup 3+} and YVO{sub 4}:Dy{sup 3+}/Ca{sup 2+} nano-lattices are synthesized by a facile technique. Structural characterizations such as x-ray diffraction, SEM, TEM, HRTEM, and Selected Area Electron Diffraction (SAED) of the samples are reported. Photoluminescence (PL) excitation and emission, enhanced mechanism, and lifetime are thoroughly discussed. PL intensity of the quenched YVO{sub 4}:Dy{sup 3+} is made increased up to 432.63% by Ca{sup 2+} co-doping. Role of the Ca{sup 2+} on the luminescence enhanced mechanism of YVO{sub 4}:Dy{sup 3+}/Ca{sup 2+} is elucidated.},

  doi          = {10.1063/1.4880176},

  url          = {https://www.osti.gov/biblio/22304518},
  journal      = {Journal of Applied Physics},

  issn         = {0021-8979},

  number       = 20,

  volume       = 115,

  place        = {United States},

  year         = {Wed May 28 00:00:00 EDT 2014},

  month        = {Wed May 28 00:00:00 EDT 2014}

}

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