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Title: Reliable electrical contacts for high power photoconductive switches

Abstract

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.

Inventors:
; ; ; ; ; ; ;
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1494134
Patent Number(s):
10,134,927
Application Number:
15/206,133
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA) LLNL
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 2016 Jul 08
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Voss, Lars, Bora, Mihail, Caporaso, George, Conway, Adam, Nguyen, Hoang T., Nikolic, Rebecca J., Sampayan, Stephen E., and Park, Sangtae. Reliable electrical contacts for high power photoconductive switches. United States: N. p., 2018. Web.
Voss, Lars, Bora, Mihail, Caporaso, George, Conway, Adam, Nguyen, Hoang T., Nikolic, Rebecca J., Sampayan, Stephen E., & Park, Sangtae. Reliable electrical contacts for high power photoconductive switches. United States.
Voss, Lars, Bora, Mihail, Caporaso, George, Conway, Adam, Nguyen, Hoang T., Nikolic, Rebecca J., Sampayan, Stephen E., and Park, Sangtae. Tue . "Reliable electrical contacts for high power photoconductive switches". United States. https://www.osti.gov/servlets/purl/1494134.
@article{osti_1494134,
title = {Reliable electrical contacts for high power photoconductive switches},
author = {Voss, Lars and Bora, Mihail and Caporaso, George and Conway, Adam and Nguyen, Hoang T. and Nikolic, Rebecca J. and Sampayan, Stephen E. and Park, Sangtae},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {11}
}

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