Silicon Carbide Optically Gate Solid State Power Switch
Traditional power semiconductor devices, such as those used in radio frequency acceleration structures for high energy physics research, have been extensively used as pulsed-power switches. For optical switches, however, the key research problem is designing a suitable device structure that can address the multi-faceted performance demands. This project will design, fabricate, and characterize a high-gain, high-breakdown-voltage, high-temperature-sustainable, non-latched, conductivity-modulated, SiC-based vertical Optically-Gated High-power Solid-state Switch (SiC-OGHSS) for electromagnetic-interference (EMI) immune and optically-isolated pulsed-power applications. The SiC-OGHSS will: (1) be structurally more complex than traditional photoconductive pulsed-power switches; (2) support high current pulses (1 kA) at voltage level of 2 kV, with switching times less than 300 nsec; and (3) handle very high di/dt (40 kA/microsecond) at low duty cycle (< 0.1percent). Phase I will involve the SiC-OGHSS design, optimization, process-flow synthesis, fabrication, and experimental characterization of a 2 kV device under nominal and elevated temperature conditions. In Phase II, a 2nd-generation SiC-OGHSS multichip module will be designed to scale up the power-handling capability, by enhancing breakdown voltage (6 kV), pulse current (> 2 kA), and the device gain. Commercial Applications and other Benefits as described by the awardee: The SiC-OGHSS technology should lead to a new product line in power components, and a number of large aerospace companies already have expressed interest. The worldwide market revenue for discrete power devices is predicted to be over 16 billion dollars, with a market growth rate that has averaged a very robust 15 percent per year since 2001.
Small Business Information at Submission:
Research Institution Information:
Genesic Semiconductor Inc.
25050 Riding Plaza Suite 130-801 South Riding, VA 20152
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University of Illinois - Chicago
1737 West Polk Street
Chicago, IL 60612 7227
Nonprofit college or university