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云南民族大学化学与生物技术学院 民族地区矿业资源综合利用重点实验室,云南 昆明,650500
纸质出版日期:2015-4-3,
网络出版日期:2014-12-26,
收稿日期:2014-12-8,
修回日期:2014-12-23,
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刘永, 程萍, 杨至雨等. 红色荧光粉La<sub>2</sub>Mo<sub>2</sub>O<sub>9</sub>:Eu<sup>3+</sup>,W<sup>6+</sup>的制备及发光性能[J]. 发光学报, 2015,36(4): 424-428
LIU Yong, CHENG Ping, YANG Zhi-yu etc. Preparation and Luminescence Properties of La<sub>2</sub>Mo<sub>2</sub>O<sub>9</sub>:Eu<sup>3+</sup>,W<sup>6+</sup> Red-emitting Phosphors[J]. Chinese Journal of Luminescence, 2015,36(4): 424-428
刘永, 程萍, 杨至雨等. 红色荧光粉La<sub>2</sub>Mo<sub>2</sub>O<sub>9</sub>:Eu<sup>3+</sup>,W<sup>6+</sup>的制备及发光性能[J]. 发光学报, 2015,36(4): 424-428 DOI: 10.3788/fgxb20153604.0424.
LIU Yong, CHENG Ping, YANG Zhi-yu etc. Preparation and Luminescence Properties of La<sub>2</sub>Mo<sub>2</sub>O<sub>9</sub>:Eu<sup>3+</sup>,W<sup>6+</sup> Red-emitting Phosphors[J]. Chinese Journal of Luminescence, 2015,36(4): 424-428 DOI: 10.3788/fgxb20153604.0424.
采用高温固相法合成出La
2
Mo
2
O
9
:Eu
3+
W
6+
系列红色荧光粉
其结构为立方晶系的- La
2
Mo
2
O
9
。在395 nm光激发下
样品La
1.40
Mo
2
O
9
:0.60Eu
3+
发射出很强的红光
最强发射峰位于616 nm处。适量地掺杂W
6+
离子可以提高样品的激发和发射强度
在395 nm光激发下
La
1.40
Mo
1.84
O
9
:0.60Eu
3+
0.16W
6+
荧光粉的Eu
3+
的
5
D
0
7
F
2
跃迁发射强度最大
是样品La
1.40
Mo
2
O
9
:0.60Eu
3+
的1.23倍。最后
将La
1.40
Eu
0.60
Mo
1.84
O
9
:0.16W
6+
荧光粉与~395 nm发射的InGaN芯片一起制作成红光发光二极管(LED)
该LED发射出很强的红光。
Red-emitting phosphors La
2
Mo
2
O
9
:Eu
3+
and La
2
Mo
2
O
9
:Eu
3+
W
6+
were synthesized by the conventional solid state method. The structure and luminescent properties of these phosphors were investigated. The results indicate that these phosphors are of single phases with cubic crystal structure. La
2
Mo
2
O
9
:Eu
3+
and La
2
Mo
2
O
9
:Eu
3+
W
6+
can be efficiently excited by near ultraviolet light
and the strongest excitation peak is at 395 nm. The emission intensity of La
2
Mo
2
O
9
:Eu
3+
can be enhanced by introducing W
6+
ions. La
1.40
Eu
0.60
Mo
1.84
O
9
:0.16W
6+
exhibites the strongest red emission
which is about 1.23 times than that of La
1.40
Mo
2
O
9
:0.60Eu
3+
. The red light emitting diode (LED) was fabricated by coating InGaN chip (~395 nm emission) with the phosphor La
1.40
Eu
0.60
Mo
1.84
O
9
:0.16W
6+
and red bright light could be observed from the LED. Hence La
1.40
Eu
0.60
Mo
1.84
O
9
:0.16W
6+
maybe find application on near-UV InGaN-based white LEDs.
红色荧光粉发光二极管发光性能La2Mo2O9
red phosphorLEDluminescent propertiesLa2Mo2O9
Chen W T, Sheu H S, Liu R S, et al. Cation-size-mismatch tuning of photoluminescence in oxynitride phosphors [J]. J. Am. Chem. Soc., 2012, 134(19):8022-8025.
Dai Q L, Foley M E, Breshike C J, et al. Ligand-passivated Eu:Y2O3 nanocrystals as a phosphor for white light emitting diodes [J]. J. Am. Chem. Soc., 2011, 133(39):15475-15486.
Chen L, Lin C C, Yeh C W, et al. Light converting inorganic phosphors for white light-emitting diodes [J]. Materials, 2010, 3(3):2172-2195.
Hu Y S, Zhuang W D, Ye H Q, et al. A novel red phosphor for white light emitting diodes [J]. J. Alloys Compd., 2005, 390(1):226-229.
Zhou L Y, Wei J S, Wu J R, et al. Potential red-emitting phosphor for white LED solid-state lighting [J]. J. Alloys Compd., 2009, 476(1):390-392.
Laffez P, Chen X Y, Banerjee G, et al. Growth of La2Mo2O9 films on porous Al2O3 substrates by radio frequency magnetron sputtering [J]. Thin Solid Films, 2006, 500(1):27-33.
Geng X J, Tian Y W, Chen Y J, et al. Progress in studies on tungstate and molybdate red emitting phosphor used for white-LED [J]. Mater. Rev.(材料导报), 2010, 24(13):54-57 (in Chinese).
Zhang Y L, Xiong L, Li X F, et al. Luminescence investigation of Eu3+ activated molybdates red phosphors and their applications in near-UV light-emitting diodes [J]. Mater. Sci. Eng. B, 2012, 177:341-344.
Wang Z L, He P, Wang R, et al. New red phosphor for near-ultraviolet light-emitting diodes with high color-purity [J]. Mater. Res. Bull., 2010, 45(2):240-242.
Wang Z L, Liang H B, Wang J, et al. Red-light-emitting diodes fabricated by near-ultraviolet InGaN chips with molybdate phosphors [J]. Appl. Phys. Lett., 2006, 89(7):071921-1-3.
Li X, Yang Z P, Guan L, et al. Luminescent properties of Eu3+-doped La2Mo2O9 red phosphor by the flux method [J]. J. Cryst. Growth, 2008, 310(12):3117-3120.
Khadasheva Z S, Venskovskii N U, Safronenko M G, et al. Synthesis and properties of La2 (Mo1-xMx)2O9(M= Nb, Ta) ionic conductors [J]. Inorg. Mater., 2002, 38(11):1168-1171.
Fang Q F, Wang X P. Low frequency internal friction of oxide ion-conductor La2Mo2O9 [J]. Solid State Phenom., 2003, 89:293-298.
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