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Preparation and characterization of nanosized GdxBi0.95-x VO4:0.05Eu3+ solid solution as red phosphor |
Yi Juan (易娟)a, Qiu Jian-Bei (邱建备)a, Wang Yu-An (王宇岸)b, Zhou Da-Cheng (周大成)a |
a School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China; b Shenzhen Water (Group) Co. Ltd., Shenzhen 518000, China |
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Abstract A complete solid solutions with monophasic zircon-type structure of vanadates of formula GdxBi0.95-xVO4:0.05Eu3+ (x=0-0.95) are synthesized by combined method of co-precipitation and hydrothermal synthesis. Their microstructures and morphologies are characterized by X-ray powder diffraction and transmission electronic microscope, and the results show that each of all the samples has a monophasic zircon-type structure. The absorption spectrum of the prepared phosphor shows a blue-shift of the fundamental absorption band edge with increasing the gadolinium content. Under UV-light and visible-light excitation, all the prepared phosphors show the typical luminescence properties of Eu3+ in the zircon-type structure. The emission intensity of GdxBi0.95-xVO4:0.05Eu3+ (x=0.55) is strongest in all samples under UV-light and visible-light excitations. Finally, the mechanisms of luminescence of Eu3+ in the GdxBi0.95-xVO4:0.05Eu3+ (x=0-0.95) solid solutions are analyzed and discussed.
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Received: 19 January 2014
Revised: 15 March 2014
Accepted manuscript online:
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PACS:
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42.70.-a
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(Optical materials)
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Fund: Project supported by the National Basic Research Program of China (Grant No. 2011CB211708), the National Natural Science Foundation of China (Grant Nos. 51272097, 61265004, and 61307111), and the Natural Science Foundation of Yunnan Province, China (Grant No. 2012FD009). |
Corresponding Authors:
Qiu Jian-Bei
E-mail: qiu@kmust.edu.cn
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About author: 42.70.-a |
Cite this article:
Yi Juan (易娟), Qiu Jian-Bei (邱建备), Wang Yu-An (王宇岸), Zhou Da-Cheng (周大成) Preparation and characterization of nanosized GdxBi0.95-x VO4:0.05Eu3+ solid solution as red phosphor 2014 Chin. Phys. B 23 104224
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