Abstract
In our paper, yttrium aluminum garnet doped with cerium (YAG:Ce) and terbium aluminum garnet doped with cerium (TAG:Ce) yellow garnet phosphors were prepared by a modified sol-gel method, using oxide, nitride as raw materials and acetylacetone, dimethyl sulfoxide, cetrimonium bromide in the hydrolysis and condensation step. The thermal treatment of the phosphors was performed at 1100 °C in order to transform it from amorphous to crystalline garnet phase. Structural, morphological, and luminescence properties were studied by Fourier transform infrared spectrometry, x-ray diffraction, scanning electron microscopy, and fluorescence spectroscopy. The results show that the modified sol-gel method provides a feasible approach to produce YAG:Ce and TAG:Ce yellow phosphors for the optoelectronic applications.
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Acknowledgments
This work was supported by a grant of the Ministry of National Education and Scientific Research, RDI Program for Space Technology and Advanced Research—STAR, project number 639/2017. This work was also supported by UEFISCDI in the Partnership Framework: PN-III-P2-2.1-PTE-2016-0145 (Project No. 46PTE/2016), PN-II-PT-PCCA-2013-4-0366 (Project No. 208/2014) and by the National Basic Funding Programme TEHNOSPEC (Project No. PN1632/2016). The authors would like to acknowledge to researchers: Mihai Danila for technical support in samples characterization and Carmen Iorga, Tamara Dobre, Elena Nistor, and Marioara Paznicu for cooperation.
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Ţucureanu, V., Matei, A., Avram, A. et al. Structural and luminescence properties of yellow phosphors prepared by a modified sol-gel method. MRS Communications 7, 721–727 (2017). https://doi.org/10.1557/mrc.2017.84
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DOI: https://doi.org/10.1557/mrc.2017.84