Chemistry Journal
Articles Information
Chemistry Journal, Vol.4, No.2, Jun. 2018, Pub. Date: Jul. 26, 2018
Studies on the Near White Light Emission of SrSiO3 Doped with Dy3+ Phosphors
Pages: 32-37 Views: 1559 Downloads: 665
[01] Ravi Shrivastava, Faculty of Science & Technology, ICFAI University, Raipur (CG), India.
[02] Manoranjan Dash, Faculty of Science & Technology, ICFAI University, Raipur (CG), India.
In present paper we prepared SrSiO3 doped with different concentrations of Dy3+ ions (0.2, 0.5, 1.0, 1.5 and 2.0mol%) by modified high temperature solid state reaction technique. Sample with optimum Photoluminescence (PL) intensity was characterized by- X-ray diffraction (XRD) Technique. XRD spectrum observed for prepares sample matched quite significantly with Crystallographic open database (COD), card number 96-431-7121. This COD is for monoclinic SrSiO3 with space group C 1 2/c 1 (15). Photoluminescence studies of all prepared samples were done. Emission spectra exhibited 2 prominent peaks at 473, 576 and 658 nm respectively. Here, Dy3+ acts as an activator. A peak centered at 473 nm is due to the transition 4F9/26H15/2 (Blue Colour) of Dy3+ ions. Similarly, 576 and 658 nm peaks are originated due to transition 4F9/26H13/2 (Green Colour) of Dy3+ions occupied at different sites. Emission at 660 nm is due to transition 4F9/26H11/2 (Red Colour). CIE coordinates expressed that, the overall emission is near white light. In order to investigate the suitability of the samples for white colour light sources for industrial use, Correlated Colour Temperature (CCT). Values of CCT were found, well within the defined acceptable range and emission is considered to be cool in appearance.
Luminescence, White LED, CCT, Dysprosium, Phosphor
[01] J. Kuang, Y. Liu, J. Zhang, White-light-emitting long-lasting phosphorescence in Dy3+-doped SrSiO3, Journal of Solid State Chemistry, 179 (2006) 266–269.
[02] B. Liu, L. Kong, C. Shi, White-light long-lasting phosphor SrSiO3: Dy3+, Journal of Luminescence, 122–123 (2007) 121–124.
[03] L. Lin, Z. Zhonghua, Z. Weiping, Z. Zhiquiang, Y. Min, Photo-luminescence properties, and thermo-luminescence curve analysis of a new white long-lasting phosphor: Ca2MgSi2O7: Dy3+, Journal of Rare Earth, 27 (5) (2009) 749-752.
[04] D. V. Sunitha, H. Nagabhushana, S. C. Sharma, B. M. Nagabhushana, B. Daruka Prasad, R. P. S. Chakradhar, Study on low-temperature solution combustion synthesized Sr2SiO4: Dy3+nano phosphor for white LED, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 127 (2014) 381–387.
[05] F. Yang, H. Ma, Y. Liuc, B. Han, H. Feng, Q. Yu, Photoluminescence propertiesofnovel Dy3þ doped Ba5CaAl4O12 phosphors Ceramics International, 40 (2014) 10189–10192.
[06] C. Liang, L. Teoh, K. Liu, Y. Chang, Near white light emission of BaY2ZnO5 doped with Dy3+ ions, Journal of Alloys and Compounds 517 (2012) 9– 13.
[07] J. Wang, J. Wang, P. Duan, Luminescent properties of Dy3+ doped Sr3Y(PO4)3 for white LEDs, Materials Letters 107 (2013) 96–98.
[08] Q. Liu, Y. Liu, Y. Ding, Z. Peng, X. Tian, Q. Yu, G. Dong, A white light emitting luminescent material Ba3Y(PO4)3: Dy3+, Ceramics International, 40 (2014) 10125–10129.
[09] Shrivastava, R., Kaur, J., Dubey, V., Jaykumar, B., Loreti, S. (2014). Photoluminescence and Thermoluminescence Investigation of Europium- and Dysprosium-Doped Dibarium Magnesium Silicate Phosphor. Spectroscopy Letters, 48, 179-183.
[10] W. M. Yen, M. J. Weber, (2004). Inorganic Phosphors Compositions, Preparation and Optical Properties, CRC Press LLC.
[11] H. Rietveld, A profile refinement method for nuclear and magnetic structures, Journal of Applied Crystallography, 2 (1969) 65-71.
[12] C. McCamy, Correlated color temperature as an explicit function of chromaticity coordinates, Color Research and Application 17 (1992) 142–144.
[13] (access date 12 June 2018)
[14] (access date 12 June 2018)
[15] R. Shrivastava, J Kaur, and V. Dubey, White Light Emission by Dy3+ Doped Phosphor Matrices: A Short Review, Journal of Fluorescence, 26 (1) (2016) 105-111.
[16] J Kaur, R Shrivastava, B Jaykumar, NS Suryanarayana, Studies on the persistent luminescence of Eu2+ and Dy3+-doped SrAl2O4 phosphors: A review, Research on Chemical Intermediates, 40 (1) (2014) 317-343
[17] R Shrivastava, J Kaur, Studies on long lasting optical properties of Eu2+ and Dy3+ doped di-barium magnesium silicate phosphors, Chinese Chemical Letters 26 (2015) 1187–1190
[18] D. Singh, NS Suryanarayana, R Shrivastava, V Dubey, Synthesis and luminescent behavior of UV induced Dy3+ activated LaAlO3, 28 (3) (2017) 2462-2470
MA 02210, USA
AIS is an academia-oriented and non-commercial institute aiming at providing users with a way to quickly and easily get the academic and scientific information.
Copyright © 2014 - American Institute of Science except certain content provided by third parties.