Tunable emission,energy transfer and charge compensation in SrMoO4:Sm3+,Tb3+,Na+ phosphor |
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Authors: | Renping Cao Kangbin Chen Shenhua Jiang Zhiyang Luo Xiaoguang Yu Pan Liu |
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Institution: | 1. College of Mathematics and Physics, Jinggangshan University, Ji'an, China;2. College of Pharmacology and Life Science, Jiujiang University, Jiujiang, China;3. College of Mechanical Manufacture and Automation, Jinggangshan University, Ji'an, China;4. Scientific Research Office, Jinggangshan University, Ji'an, China |
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Abstract: | A series of SrMoO4:Sm3+,Tb3+,Na+ phosphors was synthesized using a high‐temperature solid‐state reaction method in air. On excitation at 290 nm, SrMoO4:Sm3+,Tb3+ phosphor emitted light that varied systematically from green to reddish‐orange on changing the Sm3+ and Tb3+ ion concentrations. The emission intensities of SrMoO4:Sm3+ and SrMoO4:Sm3+,Tb3+ phosphors were increased two to four times due to charge compensation when Na+ was added as a charge compensator. The luminescence mechanism and energy transfer could be explained using energy‐level diagrams of the MoO42– group, Sm3+ and Tb3+ ions. SrMoO4:Sm3+,Tb3+,Na+ could be used as reddish‐orange phosphor in white light‐emitting diodes (LEDs) based on an ~ 405 nm near‐UV LED chip. This research is helpful in adjusting and improving the luminescence properties of other phosphors. Copyright © 2015 John Wiley & Sons, Ltd. |
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Keywords: | tunable emission energy transfer charge compensation phosphor |
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