Wu Hangjun, Zhu Jialun, Yang Zhengwen, Yan Dong, Wang Rongfei, Qiu Jianbei, Song Zhiguo, Yu Xue, Yang Yong, Zhou Dacheng, Yin Zhaoyi
J Nanosci Nanotechnol. 2014 May;14(5):3840-3. doi: 10.1166/jnn.2014.8019.
Upconversion luminescence properties of Yb-Tb codoped Bi4Ti3O12 inverse opals have been investigated. The results show that the upconversion emission can be modulated by the photonic band gap. More significantly, in the upconversion inverse opals, the excited-state absorption of Tb3+ is greatly enhanced by the suppression of upconversion spontaneous emissions of the intermediate excited state, and thus the short wavelength upconversion emission from Tb3+ is considerably improved. We believe that the present work will be valuable for not only the foundational study of upconversion emission modifications but also new optical devices in upconversion displays and short wavelength upconversion lasers.
研究了Yb-Tb共掺杂Bi4Ti3O12反蛋白石的上转换发光特性。结果表明，上转换发射可由光子带隙调制。更重要的是，在该上转换反蛋白石中，中间激发态的上转换自发发射受到抑制，Tb3+的激发态吸收大大增强，因此Tb3+的短波长上转换发射得到显著改善。我们相信，目前的工作不仅对上转换发射修饰的基础研究有价值，而且对用于上转换显示和短波长上转换激光器的新型光学器件也有价值。
