Journal
IEEE ELECTRON DEVICE LETTERS
Volume 39, Issue 7, Pages 927-930Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LED.2018.2837094
Keywords
Plasma-induced damage; charging; FinFET; BEOL; dry etch; plasma; characterization; factor analysis
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In this letter, factor analysis is employed to investigate the hidden dependencies and correlations of plasma-induced damage with other FEOL and BEOL parameters in bulk FinFET technology. First, the test structures are described and the amount of threshold voltage shift resulting from plasma damage is characterized. Next, the different parametersconsideredare listed andextracted. Finally, they are correlated to theamount of damage inflicted to the transistors using statistical reduction and factor analysis. It is found that the communality of the shift with the parameters consideredmay partly explain the degraded variability of plasma damaged MOSFET devices.
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