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https://doi.org/10.1039/C4RA07959K

has been cited by the following article:

• TITLE: Red, White and Blue Light Emission from Europium Doped Al2O3 Confined into a Silica Matrix

  AUTHORS: Joan Reyes, Dulce Y. Medina, Miriam Aguilar, Miguel A. Barron, Elizabeth Garfias, Angel de Jesus Morales

  KEYWORDS: Luminescent Lanthanide, Luminescence, White Emission, Aluminium Oxide

  JOURNAL NAME: Open Journal of Applied Sciences, Vol.8 No.8, August 9, 2018

  ABSTRACT: The main drawbacks of fluorescent activated lanthanide luminescent materials in practical optoelectronic applications are the high cost of raw material and the limitation of a specific color depending on the lanthanide ion. In this work, the synthesis of red, white and blue light emitting composite powders of Al2O3:Eu3+@SiO2 were successfully synthesized by the hydrolysis and condensation reactions of TEOS as the raw precursor of silica matrix on the Al2O3:Eu3+ surface. With the aim to change the CIE coordinates different weight ratios of Al2O3:Eu3+/SiO2 powders from 13Al/87Si to 5Al/95Si were prepared. Besides, various excitation wavelength from 280 to 340 nm was used in order to change the ratio intensity; Ired/Iblue, between the red emission coming from the 5D0→7F2 transition of Eu3+ ions and the blue band of silica matrix. Chemical evolution of the hydrolysis and condensation reaction of TEOS were conducted by FTIR spectroscopy. The results indicate that from 500°C a complete TEOS to SiO2 transformation is carried out.