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Monolithic interconnected module with a tunnel junction for enhanced electrical and optical performance

United States Patent

December 19, 2000
View the Complete Patent at the US Patent & Trademark Office
U.S. Department of Energy - Visit the Office of the Assistant General Counsel for Technology Transfer & Intellectual Property Website
An improved thermophotovoltaic (TPV) n/p/n device is provided. Monolithic Interconnected Modules (MIMS), semiconductor devices converting infrared radiation to electricity, have been developed with improved electrical and optical performance. The structure is an n-type emitter on a p-type base with an n-type lateral conduction layer. The incorporation of a tunnel junction and the reduction in the amount of p-type material used results in negligible parasitic absorption, decreased series resistance, increased voltage and increased active area. The novel use of a tunnel junction results in the potential for a TPV device with efficiency greater than 24%.
Murray; Christopher S. (Bethel Park, PA), Wilt; David M. (Bay Village, OH)
The United States of America as represented by the United States Department of Energy (Washington, DC)
09/ 343,538
June 30, 1999
The Government has rights in this invention pursuant to a contract awarded by the Department of Energy.