US Patent 11887811 Semiconductor processing chambers for deposition and etch

Exemplary semiconductor substrate supports may include a pedestal having a shaft and a platen. The semiconductor substrate supports may include a cover plate. The cover plate may be coupled with the platen along a first surface of the cover plate. The cover plate may define a recessed channel in a second surface of the cover plate opposite the first surface. The semiconductor substrate supports may include a puck coupled with the second surface of the cover plate. The puck may incorporate an electrode. The puck may define a plurality of apertures extending vertically through the puck to fluidly access the recessed channel defined in the cover plate.