Explain soft-baking, Chemical Engineering

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Soft-Baking

Soft-baking is the step during which almost all of the solvents are separate from the photo resist coating. Soft-baking plays a very critical role in photo-imaging. The photo resist coatings become photosensitive, or imageable, only after soft baking. Oversoft-baking will degrade the photosensitivity of resists by either decreasing the developer solubility or actually destroying a portion of the sensitizer.

 


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