Measuring Bulk Lifetime
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United States of America Patent
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N/A
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app pub date -
Nov 9, 2011
filing date -
Jan 14, 2010
priority date (Note) -
Abandoned
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Abstract
A substrate is electromagnetically coupled into an inductance-capacitance resonant circuit formed from (i) a member comprising a ferromagnetic material, (ii) an inductor and (iii) the substrate. The substrate is illuminated for a first time period X to cause photoconduction in the substrate. Decay in conductivity of the substrate is monitored for a second time period Y. The ratio of X to Y is greater than 1:10. Bulk lifetime of the substrate is determined from the decay.
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