Laser & Optoelectronics Progress, Volume. 47, Issue 12, 121602(2010)
Enhanced Luminescence Properties of Ba2MgSi2O7:Eu2+ Prepared in Air Atmosphere
A series of Eu-doped Ba2MgSi2O7 phosphors are prepared in air atmosphere by the high temperature solid-state reactions. A reduction of Eu3+ to Eu2+ ion is validated in Ba2MgSi2O7 via emission and excitation spectra measurement. The results show that the photoluminescence (PL) intensity of the Ba2MgSi2O7Eu2+ prepared in air at 1350 ℃ with quench cooling was enhanced about 6 times compared with that of Ba2MgSi2O7Eu2+ prepared in air at 1250 ℃ with furnace cooling. Moreover, the PL intensity of the Ba2MgSi2O7Eu2+ is increased by adding NH4F flux. The PL intensity of Ba2MgSi2O7Eu2+ phosphor containing 4% NH4F (molar fraction) is 5 times as high as that of the Ba2MgSi2O7Eu2+ phosphor without NH4F.
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You Panli, Liu Lijuan, Yao Yadong, Huang Zhongbing, Liao Xiaoming, Yin Guangfu. Enhanced Luminescence Properties of Ba2MgSi2O7:Eu2+ Prepared in Air Atmosphere[J]. Laser & Optoelectronics Progress, 2010, 47(12): 121602
Category: Materials
Received: Sep. 1, 2010
Accepted: --
Published Online: Nov. 25, 2010
The Author Email: Panli You (youpanlizb@qq.com)