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长春理工大学 材料科学与工程学院,吉林 长春,130022
纸质出版日期:2010-9-21,
网络出版日期:2010-9-21,
收稿日期:2010-6-28,
修回日期:2010-7-5,
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柏朝晖, 张希艳, 朱宏苑, 张舒婷, 吕建军, 周晓宸. 白光LED用Eu<sup>2+</sup>离子激活含氮铝酸盐发光粉的制备[J]. 发光学报, 2010,31(5): 732-736
BAI Zhao-hui, ZHANG Xi-yan, ZHU Hong-yuan, ZHANG Shu-ting, LU Jian-jun, ZHOU Xiao-chen. Preparation of Eu<sup>2+</sup>-activated Aluminate Doped by N Phosphors for White LED[J]. 发光学报, 2010,31(5): 732-736
柏朝晖, 张希艳, 朱宏苑, 张舒婷, 吕建军, 周晓宸. 白光LED用Eu<sup>2+</sup>离子激活含氮铝酸盐发光粉的制备[J]. 发光学报, 2010,31(5): 732-736 DOI:
BAI Zhao-hui, ZHANG Xi-yan, ZHU Hong-yuan, ZHANG Shu-ting, LU Jian-jun, ZHOU Xiao-chen. Preparation of Eu<sup>2+</sup>-activated Aluminate Doped by N Phosphors for White LED[J]. 发光学报, 2010,31(5): 732-736 DOI:
采用高温固相反应法制备Sr
3
Al
2
O
6-3
x
/2
N
x
∶ Eu
2+
发光材料。发光光谱分析表明
该材料在400~550 nm可见光激发下
发射光谱为峰值波长为600 nm的宽带谱。XRD分析结果显示
Sr
3
Al
2
O
6-3
x
/2
N
x
与Sr
3
Al
2
O
6
的晶体结构相同。研究了Eu
2+
离子浓度对材料发光性能的影响
结果表明随着Eu
2+
离子浓度的增加
材料的发光强度呈现出先增强后减弱的趋势
当Eu
2+
浓度为15%时
发光强度最大。根据Dexter理论
其浓度猝灭机理是电四极-电四极的相互作用。引入Ce
3+
作为敏化剂
样品的发光强度明显增强。
The Sr
3
Al
2
O
6-3
x
/2
N
x
∶ Eu
2+
phosphor was synthesized by solid-state reaction method. The study of Sr
3
Al
2
O
6-3
x
/2
N
x
∶ Eu
2+
spectra indicated that the emission spectra was the broad band spectra peaking at 600 nm when exciting at 400~550 nm. The XRD results showed that the crystal structure of Sr
3
Al
2
O
6-3
x
/2
N
x
∶ Eu
2+
was the same as Sr
3
Al
2
O
6
. Effect of Eu
2+
concentration on luminescent intensity of Sr
3
Al
2
O
6-3
x
/2
N
x
∶ Eu
2+
phosphor was investigated. The results showed that the luminescent intensity firstly increased with increasing Eu
2+
content and then decreases. The Eu
2+
content corresponding to the maximal luminescent intensity is 15%. According to Dexter theory
the concentration quenching mechanisms are the q-q (quadrupole-quadrupole) interaction. The emission intensity of Sr
3
Al
2
O
6-3
x
/2
N
x
∶ Eu
2+
Ce
3+
is higher than that of the other phosphor activated by Eu
2+
only.
发光Sr3Al2O6-3x/2Nx发光粉Eu2+
luminescenceSr3Al2O6-3x/2Nxphosphoreuropium
Su Qiang, Wu Hao, Pan Yuexiao, et al. Rare earth luminescent materials for white LED solid state lighting
. J. Chin. Soc. Rare Earths (中国稀土学报), 2005, 23 (5):513-518 (in Chinese).
Liu Xingren. Phosphors for white LED solid state lighting
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Li Xu, Yang Yong, Yang Zhiping, et al. Fabrication and properties of Eu3+ doped La2Mo2O9 red phosphor
. Chin. J. Lumin. (发光学报), 2008, 29 (1):93-96 (in Chinese).
Yang Yi, Jin Shangzhang, Shen Changyu, et al. Spectral properties of alkaline earth composite silicate phosphors for white-LED
. Chin. J. Lumin. (发光学报), 2008, 29 (5):800-804 (in Chinese).
Xie Rongjun, Naoto Hirosaki. Silicon-based oxynitride and nitride phosphors for white LEDs-A review
. Science and Technology of Advanced Materials, 2007, (7-8):588-600.
Chakoumakos B C, Lager G A, Fernandez-Baca J A, et al. Refinement of the structures of Sr3Al2O6 and the hydrogarnet Sr3Al2(O6D4)3 by rietveld analysis of neutron powder diffraction data
. Acta Cryst. C, 1992, 48 (3):414-419.
Zhang Ping. New Synthesis Technology and Luminescence Properties of Strontium Aluminate System Long Afterglow Phosphors with Flower-like Morphology . Tianjin: Tianjin University, 2006.
Van Uitert. An empirical relation fitting the position in energy of the lower d-band edge for Eu2+or Ce3+ in various compounds
. J. Lumin., 1984, 29 (1):1-9.
Zhang Qitu. Foundation of Inorganic Material Science (无机材料科学基础)
. Shanghai: East China University of Science and Technology Press, 2007: 337-339.
Luo Xixian, Cao Wanghe, Sun fei. Research progress on broad excitation band silicate luminescent materials for WLEDs
. Chinese Science Bulletin (科学通报), 2008, 53 (9):1010-1016 (in Chinese).
Blasse G, Wanmaker W L, Vrugtter J W, et al. Fluorescence of Eu2+ activated silicates
. Philips Res. Rep., 1968, 23 :189-193.
Dexter D L, Schulman J H. Concentration and excitation effects in multiphonon non-radiative transitions of rare-earth ions
. J. Chem. Phys., 1954, 22 (5):1063-1067.
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