Novel synthesis and Optical investigation of trivalent Europium doped MGd2Si3O10 (M = Mg2+, Ca2+, Sr2+ and Ba2+) nanophosphors for full-color displays

urn:nbn:sciencein.jmns.2019v6.109

Novel synthesis and Optical investigation of trivalent Europium doped MGd2Si3O10 (M = Mg2+, Ca2+, Sr2+ and Ba2+) nanophosphors for full-color displays

Published in Journal of Materials NanoScience

  • Suman Sheoran M.D. University
  • Sitender Singh M.D. University
  • Ajay Mann M.D. University
  • Anura Samantilleke Universidade of Minho
  • Bernabe Mani Universitat Politecnica de Valencia
  • Devender Singh M.D. University

Keywords: nanophosphors, displays, lanthanide, luminescence, composites, LED

Abstract

A series of Eu3+ doped MGd2Si3O10 (M = Mg2+, Ca2+, Sr2+ and Ba2+) was synthesized via sol-gel procedure at 950 oC. The optical characteristics of the materials were studied by Photoluminescence (PL) emission spectra. Upon 395 nm excitation and at 0.03 mole concentration of Eu3+ ion, these nanophosphors display optimum photoluminescence with most intense peak due to 5D07F2 (614-616) of dopant. Powder X-ray diffraction (PXRD) analysis proves that all synthesized materials are of crystalline nature and crystallinity improves on increasing temperature. Transmission electron microscopy (TEM) exhibited the spherical shape of particles in 13-30 nm size. Fourier Transformation infrared (FTIR) spectra showed peaks in 400-1000 cm-1 corresponding to gadolinium-oxygen and silicon-oxygen bond vibrations. In BaGd2Si3O10 material, Gd-O vibration is centered at 492 cm-1 and absorption band at 855 cm-1 is result of asymmetric vibrations of SiO in silicate tetrahedral unit. Due to excellent photoluminescence and suitable CIE coordinates, these materials could have brilliant applications in innovative displays.

Research Highlights

  • Series of trivalent europium doped MGd2Si3O10 (M = Mg2+, Ca2+, Sr2+ and Ba2+)fluorescent materials were synthesized successfully with sol-gel procedure.
  • The prepared samples were characterized using Photoluminescence analysis, X-ray diffraction study, Transmission Electron Microscopic analysis and Fourier Transform Infrared spectroscopy.
  • The CIE color coordinates values of phosphor confirmed the red color of complex approving the PL results.
  • X-ray diffraction pattern of these materials determined the particle size using Debye Scherrer’s equation.
  • Excellent photoluminescence response and nano size of these materials made them suitable for various innovative display applications.

Cite as: Sheoran, S., Singh, S., Mann, A., Samantilleke, A., Mani, B., & Singh, D. (2019). Novel synthesis and Optical investigation of trivalent Europium doped MGd2Si3O10 (M = Mg2+, Ca2+, Sr2+ and Ba2+) nanophosphors for full-color displays. Journal of Materials NanoScience, 6(2), 73-81.

Retrieved full text from http://pubs.thesciencein.org/journal/index.php/jmns/article/view/109

Nanochemistry and Nanocatalysis Science: Research advances and future perspective

urn:nbn:sciencein.jmns.2019v6.88

Nanochemistry and Nanocatalysis Science: Research advances and future perspective

Bhupender S. Chhikara, Rajender S. Varma

The development of nanomaterials has made its mark in nanocatalytic applications and ensuing plethora of nanotechnological advances. The size-dependent chemistry of nanomaterials and consequent controlled and designed synthesis of smart materials with desired end application has provided us a number of new products recently which are already making impact on quality of human life. The fundamental nano paradigm shift would influence future research advances in field of nanoscience chemistry, ranging from drug delivery to exquisite designs of novel catalysts that drive innovations in chemical synthesis and transformations.  The nanoscience is an interdisciplinary field that will see increased role in the diverse and emerging newer areas like artificial intelligence; nanochemistry would help speed up the development of applications in the real world with artificial intelligence.

Full text link: http://pubs.thesciencein.org/journal/index.php/jmns/article/view/88

Haryana Vigyan Ratan Award 2019

It is a pride moment for ScienceIn family, editors, scientists and researchers that Dr. Rajender S Varma, the editor of JMNS and emeritus scientist, Environmental Protection Agency, USA has been awarded Haryana Vigyan Ratan Award (translation: Haryana Science Jewel Award) 2017 on February 28, 2019 at Haryana Raj Bhawan, Chandigarh. Dr. Varma has been given this recognition for his enormous research contribution in Green Chemistry, Catalysis, NanoScience-nanomaterials, nanochemistry, nanocatalysis. Prof. Rajender (Raj) S. Varma did Ph.D. from Delhi University in 1976. He is Editor of Journal of Materials NanoScience, advisory board member of several international journals and has published over 470 scientific papers and awarded 16 US Patents, 8 books, 27 book chapters and 3 encyclopedia contributions with over ~ 31,000 citations. He is highly accomplished researcher with high citations to his work having H -Index 96. Dr. Varma hail from a village in haryana (now in punjab). On receiving the award he said “It is a proud moment for a country boy”. It is a highest award from state government for scientists.

The Department of Science and Technology Haryana Government has instituted a highest honour for the contributions in field of scientific research with title “Haryana Vigya Ratan” to honor and acknowledge the contributions of researchers from Haryana and “Haryana Yuva Vigyan” Award for the recognition of young scientists.

Dr. Varma is editing a special section/issue on Nanochemistry and Nanocatalysis , researchers working in the field can contribute their research findings (research articles or review articles ) for consideration in the special section of the journal. More details available on Dr. Varma’s Nanochemistry special section Editor.


Dr. RS Varma receiving award from Governor of Haryana.

Haryana Vigyan Ratan Award Citation for Dr. RS Varma, Scientist EPA for contribution in Nanocatalysis, Green Chemistry