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Novel and Incredibly Facile Low Temperature Solid State Route to Nano-Sized Eu3+ Activated BaTiO3 Phosphors

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Barium titanate (BaTiO3) has widespread applications in various fields of electronics due to its peculiar crystal structure and specific characteristics. For example, BaTiO3 has interesting luminescence characteristics with wavelengths in red regions after introduction of Eu3+. Generically BaTiO3:Eu3+ is synthesized through a hightemperature solid-state reaction that usually results in larger grain sized products. Although various alternative routes have been developed to obtain nano-sized products, they have limitations such as lower yield and needing special equipment and chemicals as well as post heat treatments. On the other hand, water assisted solid state reaction (WASSR) is a low temperature, environmentally friendly, and inexpensive process developed recently. Here, we report a novel WASSR route to synthesize nano-sized Eu3+ activated BaTiO3 at 80 °C from readily available raw materials. X-ray diffraction patterns of synthesized phosphor confirmed the formation of cubic phase BaTiO3. STEM EDS mapping of the as-synthesized sample showed an even distribution of host lattice elements as well as activator ion. The synthesized phosphor particles exhibited a size of 10–30 nm with PL and PLE characteristics well matching previous reports. In addition, nano-sized Ba(1–x)TiO3:xEu3+ (where x = 0.005, 0.01, 0.05, and 0.1) phosphors were synthesized through this novel and incredibly facile WASSR process at a low temperature of 80 °C.
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Document Type: Research Article

Publication date: September 1, 2018

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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