相关实验视频
Updated: Jun 8, 2025
07:03
Low-energy Cathodoluminescence for OxyNitride Phosphors
Published on: November 15, 2016
10.6K
概括
新的酸光提供可调节的,对温度敏感的长时间持久发光 (LPL) 和可调色的颜色,用于高级显示和安全应用.
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:
- 具有可调节后照色的长持续发光 (LPL) 材料对于显示和信息加密至关重要.
- 目前,很少有材料可以提供可调和和温度响应的后照特性.
研究的目的:
- 合成和表征酸 (SrZn2(PO4) 2) ,具有可调节和热刺激响应的后照辐射.
- 为了研究剂度对光发性质和色彩可调性的影响.
- 探索这些的潜在应用在温度传感和防伪方面.
主要方法:
- 采用固态合成方法,制备了用不同度的Mn2+添加剂的SrZn2(PO4)2.
- 光发光光谱学被用来分析在紫外线 (UV) 激发下发射光谱和后照特性.
- 国际照明委员会 (CIE) 坐标被确定以量化颜色变化.
- 进行了温度依赖的发光度测量,以评估热刺激反应行为.
主要成果:
- 合成的SrZn2(PO4)2体在UV激发后在419nm (Eu2+),533nm和633nm (Mn2+) 的辐射中呈现出排放.
- 通过调整Mn2+度,可以在蓝色,白色和黄色区域调整CIE坐标.
- 观察到一个明显的温度响应的后照,颜色在白色和黄色之间从293K到383K之间变化,这是由于Eu2+和Mn2+的不同热稳定性.
结论:
- 开发的 SrZn2(PO4) 2光体表现出可调节和对温度敏感的长时间持久发光.
- 这些对温度传感和防伪技术的应用具有显著的前景.
- 调整后光颜色及其温度依赖的能力为先进的光学材料开辟了新的途径.
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