Improved luminescence of lanthanide(III)-doped nanophosphors by linear aggregation

作者：Li Ling; Jiang Wenge; Pan Haihua; Xu Xurong; Tang Yinxuan; Ming Jiangzhou; Xu Zhude; Tang Ruikang^*

来源：Journal of Physical Chemistry C, 2007, 111(11): 4111-4115.

DOI：10.1021/jp068464s

The studies and applications of nanophosphors are considerably important, but unfortunately, their luminescence is always rather poor. Here, we report that the oriented aggregation of nanophosphors can significantly enhance their luminescent emissions at the nanoscale. LnPO(4) (Ln = La, Ce, and Tb) is extensively used in luminescent lighting industry, but the total quantum yield of synthesized individual similar to 20 nm La0.60Ce0.26Tb0.14PO4 particles is only similar to 21%. This value is improved up to similar to 80% when five to seven of these nanophosphors are linearly aggregated to form an oriented structure. The luminescence intensities of these linear aggregates of nanophosphors increase correspondingly. It is suggested that one-dimensional nanoaggregation plays an essential role in this luminescence improvement, which might be a useful strategy in the application of nanophosphors.

• 出版日期2007-3-22
• 单位江南大学; 浙江大学