کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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729096 | 1461439 | 2006 | 5 صفحه PDF | دانلود رایگان |
We present an electric characterization method for monitoring dielectrics on miniature 50 μm×70 μm scribe line test sites of semiconductor IC product wafers. The method is an extension to micro-scale of the corona–Kelvin metrology used for much larger sites of about 5 mm in diameter. A miniaturization of the corona charging and of the Kelvin probe is accomplished without a sacrifice in precision or repeatability. The apparatus incorporates a machine vision system for identification of test sites. The micro-testing is demonstrated using advanced gate dielectrics and key electrical parameters, i.e., dielectric capacitance, leakage, dielectric charge and flatband voltage. Monitoring is non-contact and it adds no contaminants or particulates. Therefore, after measurement, the product wafer can be returned to the fab-line for further processing.
Journal: Materials Science in Semiconductor Processing - Volume 9, Issues 1–3, February–June 2006, Pages 252–256