Monitoring of temperature variation across wafers during processing

A method of measuring temperature across wafers during semiconductor processing includes the step of providing a correlation between a peak wafer temperature during a processing step and a change in wafer surface charge or surface potential following the processing step. A first wafer to be characte...

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Bibliographic Details
Main Authors RAMAPPA DEEPAK A, MATZ LAURA, OROZCO-TERAN ROSA A
Format Patent
LanguageEnglish
Published 29.06.2010
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
SEMICONDUCTOR DEVICES
TESTING
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Summary:A method of measuring temperature across wafers during semiconductor processing includes the step of providing a correlation between a peak wafer temperature during a processing step and a change in wafer surface charge or surface potential following the processing step. A first wafer to be characterized for its peak temperature spatial distribution during the processing step is processed through the processing step. The wafer surface charge or surface potential at a plurality of locations on the first wafer are measured following the processing step. A peak temperature spatial distribution for the first wafer is then determined based on the correlation and the wafer surface charge or surface potential measured in the measuring step.
Bibliography:Application Number: US20080037531