Yang Zhengwen, Zhu Kan, Song Zhiguo, Zhou Dacheng, Yin Zhaoyi, Qiu Jianbei
College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China.
Appl Opt. 2011 Jan 20;50(3):287-90. doi: 10.1364/AO.50.000287.
We obtained upconversion (UC) light-emitting photonic materials (YbPO(4):Er) with an inverse opal structure by the self-assembly technique in combination with a solgel method. The effect of the photonic stopband on the UC luminescence of the (2)H(11/2), (4)S(3/2)→(4)I(15/2), and (4)F(9/2)→(4)I(15/2) transitions of Er(3+) has been observed in the inverse opals of the Er(3+)-doped YbPO(4). Significant suppression of the UC emission was detected if the photonic bandgap overlapped with the Er(3+) ions emission band, while enhancement of the UC emission occurs if the emission band appears at the edge of the bandgap.
我们通过自组装技术结合溶胶-凝胶法获得了具有反蛋白石结构的上转换（UC）发光光子材料（YbPO(4):Er）。在掺Er(3+)的YbPO(4)反蛋白石中，观察到了光子禁带对Er(3+)的(2)H(11/2)、(4)S(3/2)→(4)I(15/2)以及(4)F(9/2)→(4)I(15/2)跃迁的上转换发光的影响。如果光子带隙与Er(3+)离子发射带重叠，则会检测到上转换发射的显著抑制，而如果发射带出现在带隙边缘，则会上转换发射增强。
