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Victor VELIADIS
美国电力首席执行官兼首席技术官
美国北卡罗莱纳州立大学教授

Victor VELIADIS博士是美国电力首席技术官,美国电力是美国能源部宽禁带电力电子公私合营制造机构。Veliadis博士管理着超过3000万美元每年的预算,他战略性地分配了超过35个工业、大学和国家实验室项目,以使美国在宽禁带电力电子制造,劳动力发展,创造就业和节约能源方面处于领先地位。

Veliadis博士至今已进行过超过60次的邀请演讲、报告或教学指导,他是一位IEEE会士,同时是一位IEEE电子器件协会杰出讲师。他持有25项美国专利,给3部书写过章节,并发布过115个同行评审的技术出版物。

Victor VELIADIS博士同时还任北卡罗莱纳州立大学教授。他1990年获得雅典国家技术大学的五年文凭,并分别于1992年和1995年获得美国约翰霍普金斯大学电气与计算机工程系的硕士及博士学位。在2016年被任命为Power America的副执行董事兼首席技术官之前,Veliadis博士在半导体行业工作了21年,他的工作内容包括SiC SIT、JFET、MOSFET、半导体闸流管、JBS、肖特基二极管、和1-12 kV范围内的PiN二极管的设计、制造和测试。

题目:SiC Mass Commercialization: Present Status and Barriers

摘要:

Silicon (Si) power devices have dominated power electronics due to their low cost volume production, excellent starting material quality, ease of fabrication, and proven reliability. Although Si power devices continue to make significant progress, they are approaching their operational limits primarily due to their relatively low bandgap and critical electric field that result in high conduction and switching losses, and poor high temperature performance.

In this talk, the favorable material properties of Silicon Carbide (SiC), which allow for highly efficient power devices with reduced form-factor and cooling requirements, will be outlined. High impact application opportunities, where SiC devices are displacing their incumbent Si counterparts, will be presented. Material and device fabrication aspects will be highlighted with an emphasis on the processes that do not carry over from the mature Si manufacturing world and are thus specific to SiC. In particular, the presentation will stress the design of planar and trench MOSFETs, which are presently being inserted in the majority of SiC based power electronic systems. Fab models will be analyzed, and the vibrant U.S. SiC manufacturing infrastructure (that mirrors that of Si) will be presented. Barriers to SiC mass commercialization will be identified and discussed. These include the higher than silicon device cost, reliability and ruggedness concerns, defects that degrade device performance, and the need for a trained workforce to skillfully insert SiC into power electronics systems. The presentation will include a brief introduction of the PowerAmerica ecosystem, which spans all aspects of the WBG supply chain, and the value it brings to its 67 members.