Synthesis and Photoluminescence Properties of the Novel Red Phosphor Gd2MoB2O9: Eu

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A novel phosphor, Gd2MoB2O9:Eu3+ has been synthesized by solid-state reaction and its photoluminescence in UV-VUV range are investigated. A sharp excitation band is observed in the region of 120–135 nm, which is related to the charge-transfer (CT) band of Gd3+. The broad band around 135–160 nm can be assigned to the BO3 host absorption. The broad bands around 248 nm are assigned to the CT band of Eu3+-O2-. The phosphors emit strong red luminescence centered at about 591 nm, 614 nm and 626 nm due to the5D07F1 and 5D07F2 transitions of Eu3+. The main emission peak under 254 and 147 nm excitations also shows different shifts with increasing Eu3+ concentration. This could be due to the different luminescence sites selected at high doping concentrations of Eu3+. Gd2MoB2O9:Eu3+ shows the pure red emission under both 254 and 147 nm excitations.

Info:

Periodical:

Advanced Materials Research (Volumes 311-313)

Edited by:

Zhongning Guo

Pages:

1327-1331

DOI:

10.4028/www.scientific.net/AMR.311-313.1327

Citation:

L. He et al., "Synthesis and Photoluminescence Properties of the Novel Red Phosphor Gd2MoB2O9: Eu", Advanced Materials Research, Vols. 311-313, pp. 1327-1331, 2011

Online since:

August 2011

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$38.00

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