Solving the Voltage Contrast on floating substrate with standard FA toolset

被引:0
|
作者
Goxe, Julien [1 ]
Vanhuffel, Beatrice [1 ]
Castignolles, Marie [1 ]
Zirilli, Thomas [1 ]
机构
[1] NXP, Analog Mixed Signal Investigat Lab, Toulouse, France
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中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Passive Voltage Contrast (PVC) in a Scanning Electron Microscope (SEM) or a Focused Ion Beam (FIB) is a key Failure Analysis (FA) technique to highlight a leaky gate. The introduction of Silicon On Insulator (SOT) substrate in our recent automotive analog mixed-signal technology highlighted a new challenge: the Bottom Oxide (BOX) layer, by isolating the Silicon Active Area from the bulk made PVC technique less effective in finding leaky MOSFET gates. A solution involving sample preparation performed with standard FA toolset is proposed to enhance PVC on SOT substrate.
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页码:229 / 233
页数:5
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