来自HfO2和ZnO/HfO2薄膜的舒特基设备的电气性能:形态,结构和光学研究
1Basic and Engineering Sciences Central Laboratory Application and Research Center (GUTMAM), Gazi University, Ankara 06560, Turkiye.
ACS omega
|March 3, 2025
概括
这项研究表明,将二氧化 (HfO2) 层添加到氧化 (ZnO) / (Si) 二极管中,可以改善它们的电子性能. 该HfO2层减少了泄漏电流,提高了设备可靠性,用于更好的电子应用.
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
- 半导体设备 半导体设备
背景情况:
- 薄膜特性对于电子设备中使用的异质连接二极管至关重要.
- 减少泄漏电流和提高可靠性是这些设备的关键研究目标.
- 了解ZnO和HfO2薄膜中的当前运输机制是一项挑战.
研究的目的:
- 研究单层HfO2和双层ZnO/HfO2接口的结构特征.
- 检查HfO2接口层对n-ZnO/p-Si异质连接二极管的电流传输性能的影响.
- 分析当前的运输机制,缺陷减少和泄漏电流缓解.
主要方法:
- 用于生长ZnO/HfO2薄膜的Sol-gel旋转涂层.
- 电流-电压 (I-V) 描述以分析传输机制 (热电辐射,SCLC,TCLC).
- 用X射线衍射 (XRD),场辐射扫描电子显微镜 (FE-SEM),UV-Vis光谱光度和原子力显微镜 (AFM) 进行结构和光学分析.
主要成果:
- 所有的薄膜都结晶在六边形的石结构中.
- I-V特性揭示了在高电压下具有指数式陷分布的道化行为.
- 与没有HfO2的二极管相比,n-ZnO/HfO2/p-Si结构显著减少了与缺陷相关的泄漏电流.
结论:
- HfO2接口层有效地减少了n-ZnO/p-Si异质连接二极管中的泄漏电流.
- 观察到的传输机制包括热离子发射,空间电荷有限导电和陷电荷有限电流.
- 这些发现有助于理解基于ZnO/HfO2的异构连接,使其在高效的电子设备中具有潜在的应用.
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