Patent ID: 8906710

Claim:
A method of estimating a height of an epitaxially grown semiconductor material in other semiconductor devices, comprising: epitaxially growing first, second, and third portions of semiconductor material on a first semiconductor device, the third portion of semiconductor material having a reduced size relative to the first and second portions of semiconductor material; measuring a height of the third portion of semiconductor material and a height of at least one of the first and second portions of semiconductor material; measuring a first saturation current through the first and second portions of semiconductor material; measuring a second saturation current through the first and third portions of semiconductor material; preparing a model of the first saturation current relative to the height of at least one of the first and second portions of semiconductor material and the second saturation current relative to an average of the height of the first and third portions of semiconductor material; and using the model to estimate the height of an epitaxially grown semiconductor material in the other semiconductor devices.