Abstract：Nanocrystalline Gd2O3 doped with europium was synthesized by the low-temperature combustion method. By using the X-ray diffraction (XRD), high resolution transmission electron microscopy(HRTEM), and fluorescence spectrophotometer, the structural, morphological and luminescence properties of the nanocrystal were investigated. The results show that by varying the glycine-to-metal nitrate (G/M) molar ratio and the annealing temperature, nanocrystalline Gd2O3∶Eu3+ with different structure and grain size could be achieved. The structure changed from cubic to monoclinic with the increment of G/M ratio after the samples had been calcined at 800 ℃ for 0.5 hour. When the G/M ratio was 0.83 and 1.0, the nanosized and pure cubic phase Gd2O3∶Eu3+ was produced. The crystalline size became bigger with increasing the annealing temperature. The grain size was about 10-30 nm. The main emission peak in cubic Gd2O3∶Eu3+ nanocrystal was at 612 nm(the 5D0→7F2 transition). In addition, a red shift for charge transfer state occurred in the excitation spectrum.
彭智伟,王玲玲*,刘晃清,李宏建,邹炳锁,杨广,张杰 . 纳米晶Gd2O3∶Eu3+的制备及发光性能[J]. 光谱学与光谱分析, 2007, 27(03): 427-431.
PENG Zhi-wei,WANG Ling-ling*,LIU Huang-qing, LI Hong-jian, ZOU Bing-suo, YANG Guang, ZHANG Jie . Preparation and Luminescence Properties of Nanocrystals Gd2O3∶Eu3+ . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(03): 427-431.
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