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用于白色发光二极管的Dy3+活性酸的结构,光学和发光性能

Vibha Sharma¹, Shreya Maurya¹, Anu¹

¹Department of Applied Physics, Delhi Technological University, New Delhi, India.

Luminescence : the journal of biological and chemical luminescence

|June 23, 2023

概括

一种新型的dysprosium激活酸酸呈现出强烈的黄色辐射和白光特性. 这种材料表现出极好的热稳定性,使其适用于白色发光二极管.

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:

开发高效的光剂对于先进的照明技术至关重要.
酸 (Dy3+) 兴奋剂是一种常见的策略,用于调整发光特性.
酸酸 (K4CaSi3O9) 被作为宿主材料进行了探索.

研究的目的:

为了合成和表征一个dysprosium激活的酸酸 (KCS: Dy3+).
为了研究它的结构,光学和发光特性.
评估其在白色发光二极管 (WLED) 应用中的潜力.

主要方法:

固态合成路线. 固态合成路线.
用于结构分析的X射线衍射 (XRD).
扫描电子显微镜 (SEM) 和能量散射X射线 (EDX) 用于形态和组成.
福里埃变换红外 (FT-IR) 光谱学用于化学结构和振动模式.
扩散反射频谱 (DRS) 用于光学带隙测定.
光发光 (PL) 光谱检测辐射特性和色度.
用于热稳定性分析的温度依赖PL (TDPL).

主要成果:

合成的具有立方体结构 (空间组Pa).
在350nm激发时观察到强烈的黄色辐射,归因于Dy3+ 4F9/2 → 6H13/2过渡.
光学带隙被确定在3.523.71 eV的范围内.
颜色坐标位于白色区域内.
通过TDPL分析证实了高热稳定性.

结论:

KCS:Dy3+具有有前途的发光性能和高热稳定性.
该材料是基于n-UV的白色发光二极管的潜在候选者.
进一步研究优化合成和性能是有必要的.

关键词:

这是一个I-H模型.激活能量是什么激活能量发光效应的发光效应和的使用方法在 w-LEDs 中使用.

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