Sub-Quater Micron Schottky Devices and the High Electron Mobility Varactor Diode

9412931 Crowe这些二极管目前在世界各地用于各种科学应用，包括射电天文学、等离子体诊断、化学光谱学、大气化学和近距离雷达测量。以前的研究已经导致了在1-5太赫兹频率下具有记录性能的设备的创造。这些研究还表明，进一步改进性能和增加运行频率是可能的。三名研究生将参与这项研究，其中两名将得到这笔助学金的资助。这些学生将共同组成一个团队，努力全面了解太赫兹肖特基二极管的操作、设计和制造以及测试和评估的物理原理。第二个技术目标是研究一种基于肖特基接触二维电子气的新型变容二极管，并将其用作毫米和亚毫米波长倍增器。这种固有的平面器件技术已经显示出与最先进的平面肖特基器件相当的性能。通过这项研究，这些新型变容二极管将被证明具有优于标准肖特基变容二极管的性能，从而将成为毫米和亚毫米波长功率的重要来源。***

9412931 Crowe These diodes are now in use around the world for a variety of scientific applications, including, radio astronomy, plasma diagnostics, chemical spectroscopy, atmospheric chemistry, and compact range radar measurements. Previous research has led to the creation of devices that have record performance at frequencies from 1-5 THz. These studies have also indicated that further performance improvements and increased operating frequency are possible. Three graduate students will be involved in this research, two of which will be supported by this grant. Together these students will form a team that strives to fully understand the physics of operation, design and fabrication, and testing and evaluation of THz Schottky diodes. The second technological goal is the research of a novel varactor diode based on a Schottky contact to a two-dimensional electron gas and its use as a millimeter and submillimeter wavelength multiplier. This inherently planar device technology has already demonstrated comparable performance to state-of-the-art planar Schottky devices. Through this research, these novel varactor diodes will be shown to have superior performance to standard Schottky varactors and will thereby become an important source of millimeter and submillimeter wavelength power. ***