Effect of doping Gd3+ on crystal structure and luminescent properties of Sr2SiO4:Eu2+ phosphor
来源期刊：JOURNAL OF RARE EARTHS2015年第7期
论文作者：赵聪 朱达川 高唯 韩涛 彭玲玲 涂铭旌
文章页码：693 - 699
摘 要：Sr1.995–1.5xGdxSi O4:0.005Eu2+ phosphor series with x=0–0.08 mol for near-ultraviolet white light-emitting diodes（NUV w-LEDs） were synthesized via solid-state reaction method. XRD profile pattern and refinement results demonstrated that doping Gd3+ions resulted in the phase transformation（β-Sr2 Si O4→α’-Sr2 Si O4）. The photoluminescence spectrum of the sample with x=0 mol displayed two emission peaks centered at 470 and 525 nm. The two-peak spectra became one-peak spectra with the Gd3+ concentration increasing. Actually, the fitting results demonstrated that the one-peak spectra were still composed of two single emission spectra. The photoluminescence intensity was improved and the CIE chromaticity coordinates were adjusted via doping Gd3+.
赵聪1,2,3，朱达川1，高唯2，韩涛3，彭玲玲3，涂铭旌1
1. College of Materials Science and Engineering, Sichuan University2. Department of Chemical & Materials Engineering, The University of Auckland3. Research Center for Material Interdisciplinary Science, Chongqing University of Arts and Science,Chongqing Engineering Research Center for Optoelectronic Materials and Devices
摘 要：Sr1.995–1.5xGdxSi O4:0.005Eu2+ phosphor series with x=0–0.08 mol for near-ultraviolet white light-emitting diodes（NUV w-LEDs） were synthesized via solid-state reaction method. XRD profile pattern and refinement results demonstrated that doping Gd3+ions resulted in the phase transformation（β-Sr2 Si O4→α’-Sr2 Si O4）. The photoluminescence spectrum of the sample with x=0 mol displayed two emission peaks centered at 470 and 525 nm. The two-peak spectra became one-peak spectra with the Gd3+ concentration increasing. Actually, the fitting results demonstrated that the one-peak spectra were still composed of two single emission spectra. The photoluminescence intensity was improved and the CIE chromaticity coordinates were adjusted via doping Gd3+.
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