荧光粉
光子上转换
兴奋剂
材料科学
发光
激发
分析化学(期刊)
红灯
光电子学
光学
化学
物理
植物
量子力学
色谱法
生物
作者
Junshan Hu,Bin Duan,Yuxiang Wu,Yongqiang Li,Fengyi Wang,Chang‐Chun Ding,Wei Jin
标识
DOI:10.1016/j.materresbull.2023.112633
摘要
Yb3+/Er3+ co-doped Ba3Sc2WO9 strong red upconversion luminescent (UCL) phosphors have been achieved by high-temperature solid-phase method. Under 980 nm laser excitation, the phosphor emits strong red light at ∼667 nm and weak green light at ∼560 nm, with the intensity ratio of the red-green integrals up to 23.06. The band gap of the optimally doped Ba3Sc2WO9: 0.1 Yb3+, 0.03 Er3+ sample was calculated to be 3.14 eV. The main excitation process for the red light emission is the transition of Er3+ from the 4I13/2 energy state to the 4F9/2 energy state. In addition, the Yb3+/Er3+ doped Ba3Sc2WO9 red UCL phosphors have great potential for ambient temperature sensing in the temperature range 298–498 K. The Ba3Sc2WO9: 0.1 Yb3+, 0.03 Er3+ phosphor as a temperature sensor has a maximum sensitivity of 0.0096 K−1 at 498 K. This study provides a groundbreaking method for exploring new materials for strong red light upconversion emission.
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