Alpha 8 SE D

A diffusion furnace is batch thermal equipment used to heat wafer lots in a controlled process tube and gas environment. Thermal furnaces of this class are used for operations such as oxidation, diffusion, and other heat treatments that change films or dopant profiles across many wafers at once.

Batch diffusion furnaces move wafer carriers into a heated process tube where temperature and gas composition are held within the recipe. Gas delivery hardware meters and switches process gases, while the furnace control system sequences loading, heating, soaking, and unloading. Automation on this class of tool commonly handles cassette transfer, wafer orientation, and presence checking around the furnace load area.

Thermal diffusion furnaces are used in the front end of line and in related thermal modules where wafers need high temperature exposure before metallization is complete. A furnace of this class commonly follows wafer cleaning and precedes later film deposition, lithography, etch, implant activation, or electrical isolation steps depending on the specific flow.

Furnaces in this equipment class are applied to oxide growth, dopant diffusion, annealing, and other batch heat treatments on semiconductor wafers. Such processes are used to form insulating layers, modify junction structures, densify films, or condition wafer surfaces for subsequent fabrication steps.