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A novel Dy3+-doped Gd(PO3)3 white-light phosphors under VUV excitation for Hg-free lamps application |
| Zhang Li (张锂)a, Han Guo-Cai (韩国才)b |
a Department of Basic Course, Lanzhou Institute of Technology, Lanzhou 730050, China;
b Department of Material Engineering, Lanzhou Institute of Technology, Lanzhou 730050, China |
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Abstract Novel Dy3+-doped Gd(PO3)3 white light phosphors each with an orthorhombic system are successfully synthesized by solid-state reaction. The luminescence properties of white-light Gd1-x(PO3)3:xDy3+ (0<x≤ 0.25) under vacuum ultraviolet (VUV) excitation are investigated. The strong absorption at around 147 nm in excitation spectrum energy can be transferred to the energy levels of Dy3+ ion from the host absorption. Additionally, the white light phosphor is activated by a single Dy3+ ion. Therefore, the luminescence of Gd1-x(PO3)3:xDy (0<x≤ 0.25) under VUV excitation is effective, and it has the promise of being applied to mercury-free lamp.
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Received: 26 April 2012
Revised: 07 July 2012
Accepted manuscript online:
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PACS:
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78.55.-m
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(Photoluminescence, properties and materials)
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78.66.-w
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(Optical properties of specific thin films)
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| Fund: Project supported by the National Natural Science Foundation for Young Scientists of China (Grant No. 502041032). |
Corresponding Authors:
Han Guo-Cai
E-mail: hgclzu@163.com
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Cite this article:
Zhang Li (张锂), Han Guo-Cai (韩国才) A novel Dy3+-doped Gd(PO3)3 white-light phosphors under VUV excitation for Hg-free lamps application 2013 Chin. Phys. B 22 027803
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