Upconversion white-light emitting of Tm3+ and Er3+ codoped oxyfluoride and its achieving mechanism
Upconversion white-light emitting of Tm3+ and Er3+ codoped oxyfluoride and its achieving mechanism
复制标题
DOI：
10.1016/j.materresbull.2009.01.024
复制
发表时间：
2009-07
影响因子：
5.4
通讯作者：
Zhi-Lin Yu;Qibin Yang;Changfu Xu;Yunxin Liu
中科院分区：
文献类型：
--
作者：
Zhi-Lin Yu;Qibin Yang;Changfu Xu;Yunxin Liu
采用高温固相反应法合成了Tm 3+和Er 3+共掺杂氟氧化物样品。在980 nm红外激光二极管激发下，观察到Tm 3+和Er 3+共掺氟氧化物的强烈上转换白色光，该光由三基色组成，即蓝（来自Tm 3+）、绿色（来自Er 3+）和红（来自Tm 3+和Er 3+）。通过PbO到PbO2的相变，首次获得了接近标准消色差点的最佳白色上转换光。扫描电子显微镜、X射线衍射和国际照明委员会色度分析揭示了白色上转换光与微观结构和Er 3+含量的依赖关系。该样品具有接近标准消色差点的白色上转换光，在三维固态显示和背光等领域具有潜在的应用价值。
Tm3+ and Er3+ codoped oxyfluoride samples were synthesized by high temperature solid-state reaction. Intense upconversion white light of Tm3+ and Er3+ codoped oxyfluoride was observed under the excitation of a 980-nm infrared laser diode, which was composed of three primary colors, ie, blue (from Tm3+), green (from Er3+), and red emissions (from Tm3+ and Er3+). The optimal white upconversion light, which is close to the standard achromatic point, was achieved firstly by phase transition from PbO to PbO2. The scanning electron microscopy, X-ray diffraction and Commission Internationale d'Eclairage chromaticity analysis revealed the dependence of the white upconversion light both on microstructure and Er3+ content. The sample with white upconversion light close to the standard achromatic point has potential applications in the fields of the three-dimensional solid-state display and multicolor backlight.