Time-resolved capacitive coupling voltage contrast—a new voltage measurement technique for passivated devices

Cole, E. I.; Bagnell, C. R.; DiBianca, F. A.; Johnson, D.; Oxford, W.; Smith, C.; Propst, R. H.
March 1986
Applied Physics Letters;3/3/1986, Vol. 48 Issue 9, p599
Academic Journal
A scanning electron microscope is used in the voltage contrast mode to examine dynamic voltages on passivated integrated circuits. At low primary electron beam energies negative voltage transients produce a capacitive coupling voltage contrast flash visible through passivation layers. The flash decay time is related to the amplitude of the voltage transient. This new voltage measuring method is called time-resolved capacitive coupling voltage contrast. Preliminary results yield voltage calibration curves with a standard error of 45 mV or lower.


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