用于光学数据存储应用的诱导可调节带隙.
Surbhi Agarwal1, D K Dwivedi1, Pooja Lohia2
1Photonics and Photovoltaic Research Lab, Department of Physics and Material Science, Madan Mohan Malviya University of Technology Gorakhpur 273010 India todkdwivedi@gmail.com.
RSC advances
|September 20, 2024
概括
本研究探讨了用于相变存储器 (PCM) 应用的基于Te的薄膜. 研究的材料显示了对光子设备有前途的光学和电子性能.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 光电学是指光电子产品.
背景情况:
- 阶段变换内存 (PCM) 对人工智能应用至关重要,因为它需要具有高热稳定性和快速运行的材料.
- 当前的PCM材料在同时实现这些关键性能特征时面临着挑战.
- 基于Te的石灰化物材料正在研究先进的记忆技术.
研究的目的:
- 为了研究Te1-GeSe0.5) Y (x = 0.05,0.1,0.15) 薄膜的光学和电子特性.
- 评估它们在光子应用和人工智能启发的计算方面的潜力.
- 了解材料组成和性能之间的关系.
主要方法:
- 使用热蒸发进行薄膜沉积.
- 通过X射线衍射 (XRD) 进行结构性表征.
- 使用扫描电子显微镜 (SEM) 进行表面形态分析.
- 使用能量分散式X射线光谱 (EDX) 进行元素组成分析.
- 使用紫外线可见光谱光度计 (5002500 nm) 确定光学属性.
- 分析光学参数,包括折射率 (n),灭绝系数 (k),吸收系数 (α) 和光学带隙.
- 应用陶克关系和乌尔巴赫关系.
- 使用Wemple-DiDomenico模型计算非线性折射率.
- 介电性质和能量损失函数的确定.
主要成果:
- 指示的光能带隙允许间接过渡.
- 随着Y含量增加,观察到增强的光学参数.
- 折射率,灭绝系数和吸收系数被系统地确定.
- 计算了非线性光学性质,介电性质和能量损失函数.
- 结构,形态和组成分析证实了薄膜的完整性.
结论:
- 研究的基于Te的薄膜表现出有利的光学和电子性能.
- 增强的光学参数表明它适用于各种光子应用.
- 这些材料显示出在先进的人工智能硬件中使用的潜力.
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