Publication Type : Journal Article
Publisher : Elsevier BV
Source : Journal of Alloys and Compounds
Url : https://doi.org/10.1016/j.jallcom.2013.01.162
Keywords : Phosphors, Vanadate, X-ray diffraction, Optical properties
Campus : Amaravati
School : School of Engineering
Department : Physics
Year : 2013
Abstract : Eu3+-activated novel alkaline earth metal (Sr and Ba) vanadate phosphors, Na(Sr0.97− x ,Ba x )VO4: Eu 0.03 3 + (x =0–0.97) have been successfully synthesized using solid state reaction method and characterized through structure, morphology, elemental analysis, luminescence (excitation, emission and CIE coordinate) and decay rate properties as a function of Ba ion concentration. Phosphors show a broad excitation band (monitored for 5D0 → 7F2 transition of Eu3+) in the 230–430nm wavelength regions which make them highly suitable for GaN-based LED chips. These phosphors can be efficiently excited by near UV light and exhibit a dominant red emission at 613nm (5D0 → 7F2). The decay lifetime and color coordinates were evaluated for Na(Sr,Ba)VO4:Eu3+ phosphors. Hence, these phosphors could be a potential candidate for light emitting diodes and display applications.
Cite this Research Publication : C.R. Kesavulu, Dong Gi Lee, Soung Soo Yi, Kiwan Jang, Jae Hyung Park, Jae Seung Leem, Yun Hyuk Choi, Yeon Ju Jang, Jung Gon Choi, Spectroscopic properties of Na(Sr,Ba)VO4:Eu3+ novel red-emitting phosphors for solid state lighting applications, Journal of Alloys and Compounds, Elsevier BV, 2013, https://doi.org/10.1016/j.jallcom.2013.01.162