对Pr3+化光源的蓝光激活红色发射持续发光的洞察力
Zikai Meng1,2, Zhen Guo1,2, Jiajia Cao1
1School of Chemistry and Chemical Engineering, Qinghai Normal University, Xining 810008, China. wangzhbqhnu@163.com.
Dalton transactions (Cambridge, England : 2003)
|August 8, 2023
概括
一种新型的发射红色的持久,CaCd2Ga2Ge3O12:Pr3+,被合成用于高效的蓝光激发. 这种材料由于其独特的发光特性,对AC-LED和生物成像的应用具有前景.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 发光的光度是非常的低.
背景情况:
- 持久发光 (PL) 材料对于光学信息存储,AC-LED,防伪和生物成像至关重要.
- 开发高效的蓝光激发红色发射持久仍然是一个重大挑战.
研究的目的:
- 为了合成和表征一种新的蓝光激发红色发射持续.
- 为了研究它的发光特性,包括光发光和光后的特性.
- 分析其独特的发光行为背后的机制.
主要方法:
- 对于CaCd2Ga2Ge3O12:Pr3+的固态合成方法.
- 阶段纯度和晶体结构的表征.
- 光谱分析包括光发光,光后发射和3D热发光.
主要成果:
- 成功合成了具有优异发光特性的CaCd2Ga2Ge3O12:Pr3+ .
- 光发光光谱显示在294nm激发下具有特征的Pr3+过渡.
- 在蓝光激发后,光后发光会呈现出红色辐射,这种辐射归因于Pr3+的1D2 → 3H4过渡.
- 热发光分析显示了两种类型的陷 (0.684 eV和0.776 eV) 影响发光颜色.
结论:
- 合成的CaCd2Ga2Ge3O12:Pr3+是一种有前途的蓝光激发红色发射持续.
- 确定了明显的光发光和余光机制,涉及Pr3+过渡和电荷载体捕获.
- 这种材料在AC-LED和多循环生物成像中具有先进应用的潜力.
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