Patent ID: 9103032
Filing Date: 2015-08-11
Classification: C23C

Abstract:
1. Apparatus for forming a solar cell, comprising: a housing defining a chamber including a rotatable substrate support therein and an outer structure located radially outward from the substrate support; a sputtering source, configured to deposit particles of a first type over at least a portion of a surface of a substrate on the substrate support; an evaporation source configured to deposit a plurality of particles of a second type over the portion of the surface of the substrate; a cooling unit between the sputtering source and the evaporation source; and a control system including a mass flux sensor and a control unit coupled to receive signals indicating a mass flux rate from the mass flux sensor, the control unit providing an output signal, and the cooling unit is responsive to the output signal to adjust a cooling power of the cooling unit to trap particles of the second type to prevent contamination of the sputter source; and wherein the sputtering source, cooling unit, and evaporation source are arranged sequentially along the outer structure around the substrate support, and the cooling unit includes a first condenser on a flat member arranged to face the substrate on the substrate support when the substrate is rotated past the cooling unit.