钻石肖特基屏障二极管的接口工程和结构优化方面的进展
Shihao Lu1, Xufang Zhang1, Shichao Wang1
1School of Integrated Circuits, North China University of Technology, Beijing 100144, China.
这篇评论探讨了钻石Schottky屏障二极管 (SBD) 的接口工程,这对于高功率电子设备至关重要. 诸如中间层和终端设计之类的策略提高了要求高的应用程序的性能和可靠性.
科学领域:
- 材料科学 材料科学 材料科学
- 电气工程 电气工程
- 半导体物理 半导体物理
背景情况:
- 钻石的独特特性 (超宽带隙,硬度,导热性) 使其成为高功率,高温电子产品的理想选择.
- 钻石肖特基屏障二极管 (SBD) 由于其简单的结构和出色的整形能力而具有前景.
- 与接口相关的问题,如表面状态和费米水平固定限制性能在传统的金属半导体 (MS) SBDs.
研究的目的:
- 系统地审查钻石SBD的最新进展,重点关注接口工程策略.
- 分析金属半导体 (MS) 和金属间层半导体 (MIS) 配置,以提高Schottky屏障高度 (SBH) 控制和设备可靠性.
- 突出参数提取方面的挑战,并提出一个统一的方法来准确确定SBH.
主要方法:
- 在MS结构中对单层和多层金属接触器进行SBH调制和热稳定性的批判性分析.
- 在MIS结构中用于界面被动化和屏障调制的功能介层 (高k介电材料,低工作功能的材料) 的评估.
- 对终端工程技术 (现场板,表面终端) 的审查,以提高故障电压.
主要成果:
- 接口工程,特别是在MIS结构中使用中间层,有效地解决了表面状态和费米水平钉定.
- 高k材料 (Al2O3,HfO2,SnO2) 和低工作功能的材料 (LaB6,CeB6) 在改善接口特性方面显示出希望.
- 终端工程策略显著提高了钻石SBD的故障电压.
结论:
- 接口工程对于实现极端条件应用的高性能和可靠的钻石SBD至关重要.
- 具有功能间层的MIS结构为克服MS结构的局限性提供了一条可行的途径.
- 为了准确的SBH确定和设备优化,需要采用统一的参数提取方法.
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