Optik ( IF 3.1 ) Pub Date : 2020-03-26 , DOI: 10.1016/j.ijleo.2020.164643 Yan Pan , Wenming Wang , Hongmei Chen , Yong Li
Er3+ doped and Er3+-Yb3+ codoped GdOBr powders were successfully synthesized by the solid-state reaction method. The structural properties of the samples were confirmed by the X-ray diffraction patterns. Under 980 nm excitation, upconversion spectra composed of green and red bands originate from 2H11/2→4I15/2, 4S3/2→4I15/2 and 4F9/2→4I15/2 electronic transitions of Er3+ ions, respectively. Upconversion emission was observed tuning from green to red as function of concentration of Yb3+ or Er3+ ion. A possible upconversion mechanism of Er3+ solely doped and Er3+-Yb3+ codoped GdOBr was proposed by an energy-level diagram in light of dependence of emission intensities on pumping power.
中文翻译:
掺Er 3+和Yb 3+ -Er 3+共掺杂的GdOBr中绿色和红色上转换发光的浓度依赖性研究
铒3+掺杂和Er 3+ -Yb 3+共掺杂GdOBr粉末成功地由该固态反应法合成。样品的结构性质通过X射线衍射图证实。下980nm的激发,绿色和红色带构成的上转换光谱从起源2 ħ 11/2 → 4我15/2,4小号3/2 → 4我15/2和4 ˚F 9/2 → 4我15/2 Er 3+的电子跃迁离子。观察到上转换发射从绿色变为红色,这是Yb 3+或Er 3+离子浓度的函数。尔的一个可能的上转换机构3+单独掺杂和Er 3+ -Yb 3+共掺杂GdOBr在上泵激功率的发射强度的依赖性的光提出的能级图。