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RELIABLE ELECTRICAL CONTACTS FOR HIGH POWER PHOTOCONDUCTIVE SWITCHES

United States Patent Application

20180013029
A1
View the Complete Application at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
A photoconductive switch consisting of an optically actuated photoconductive material, e.g. a wide bandgap semiconductor such as SiC, situated between opposing electrodes. The electrodes are created using various methods in order to maximize reliability by reducing resistive heating, current concentrations and filamentation, and heating and ablation due to the light source. This is primarily accomplished by the configuration of the electrical contact geometry, choice of contacts metals, annealing, ion implantation, creation of recesses within the SiC, and the use of coatings to act as encapsulants and anti-reflective layers.
Voss, Lars (Livermore, CA), Bora, Mihail (Livermore, CA), Caporaso, George (Livermore, CA), Conway, Adam (Livermore, CA), Nguyen, Hoang T. (Livermore, CA), Nikolic, Rebecca J. (Oakland, CA), Sampayan, Stephen E. (Manteca, CA), Park, Sangtae (San Ramon, CA)
15/ 206,133
July 8, 2016
FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0001] The United States Government has rights in this invention pursuant to Contract No. DE-AC52-07NA27344 between the United States Department of Energy and Lawrence Livermore National Security, LLC for the operation of Lawrence Livermore National Laboratory.