Abstract：Nanocrsytalline Ba1-xMgAl10O17∶xEu2+ (0.05≤x≤0.4) blue-emitting phosphor was successfully prepared by low-temperature combustion synthesis. The influence of different Eu content on the spectral characteristics of Ba1-xMgAl10O17∶xEu2+ was mainly investigated. The results of XRD and SEM analysis show that the sample is single phase and its average grain size is about 30 nm. The luminescence property of Ba1-xMgAl10O17∶xEu2+ phosphor is considerably influenced by Eu2+ concentration. In an appropriate Eu2+ doping concentration range, the intensity of the fluorescence of Ba1-xMgAl10O17∶xEu2+ was increased obviously with increasing the Eu2+ doping concentration, owing to adding the number of luminescent centers and enhancing the energy transfer between Eu2+ ions. The optimum emission intensity was reached at x＝0.2. However, as the Eu2+ doping concentration was higher than 0.2, the intensity of the fluorescence was reduced, due to the concentration quenching occurrence.
[1] Rao R P. Journal of Luminescence, 2005, 113: 271. [2] Ronda C R. Journal of luminescence, 1997, 72-74: 49. [3] Bizarri G, Moine B. Journal of Luminescence, 2005, 113: 199. [4] Liu Ying-Liang, Shi Chun-Shan. Materials Research Bulletin, 2001, 36: 109. [5] Patil Kashinath C. Aruna S T, Mimani Tanu. Current Opinion in Solid State and Materials Science, 2002, 6: 507. [6] Wang Shu Fen, Gu Feng, L Meng Kai, et al. Journal of Alloys and Compounds, 2005, 394: 255. [7] Chander Harish, Haranath D, Shanker Virendra, et al. Journal of Crystal Growth, 2004, 271: 307. [8] Zhang Junying, Zhang Zhongtai, Tang Zilong, et al. Powder Technology, 2002, 126(2): 161. [9] Jeon Byung Soo, Hong Gun Young, Yoo Young Kil, et al. J. Electrochem. Soc., 2001, 148: H128. [10] ZHANG Xi-yan, JIANG Wei-wei, LIU Xue, et al(张希艳, 姜薇薇, 刘 学, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2005, 25(10): 1560.
