精品文档---下载后可任意编辑AlGaN/GaN 低温特性讨论的开题报告【摘要】本文针对 AlGaN/GaN 异质结构的低温特性开展讨论，探究其在低温下的电学性质和光学性质。首先，介绍了 AlGaN/GaN 异质结构的基本结构和优点，以及该结构在 LED 和功率器件中的应用。接着，详细阐述了低温测试技术的意义和方法，比较了不同技术的优缺点，确定了本文采纳的低温测试方案。然后，通过测量样品在不同温度下的电流-电压（I-V）特性，分析了其低温电学性质。最后，使用光致发光（PL）技术对样品进行表征，讨论其低温光学性质。结果表明，AlGaN/GaN 异质结构在低温下具有优异的电学和光学性质，为其在未来的应用和进展提供了有力支持。【关键词】AlGaN/GaN；低温特性；电学性质；光学性质【Abstract】This thesis focuses on the low-temperature characteristics of the AlGaN/GaN heterostructure, exploring its electrical and optical properties at low temperatures. Firstly, the basic structure and advantages of the AlGaN/GaN heterostructure are introduced, as well as its applications in LED and power devices. Then, the significance and methods of low-temperature testing technology are elaborated, and the advantages and disadvantages of different technologies are compared to determine the low-temperature testing scheme used in this paper. Subsequently, the low-temperature electrical properties of the sample are analyzed by measuring the current-voltage (I-V) characteristics at different temperatures. Finally, the sample is characterized using photoluminescence (PL) technology to study its low-temperature optical properties. The results show that the AlGaN/GaN heterostructure has excellent electrical and optical properties at low temperatures, providing strong support for its future applications and development.【Keywords】AlGaN/GaN; low-temperature characteristics; electrical properties; optical properties
