NOVELTY - An apparatus (400) for forming solar cell comprises housing defining vacuum chamber, rotatable substrate apparatus configured to hold substrates on surfaces where each surface is disposed facing an interior surface of vacuum chamber, first sputtering source (435) to deposit absorber layer atoms of first type over portion of a surface of each substrate, evaporation source (440) disposed in first sub-chamber of vacuum chamber and configured to deposit absorber layer atoms of second type over a portion of surface of each one of substrates, and isolation source to isolate evaporation source.    USE - As apparatus for forming a solar cell (claimed).    ADVANTAGE - The apparatus isolates and separates evaporation and sputtering processes, minimizes sputtering source contamination and provides a safer and more efficient process for manufacturing thin film solar cells.    DETAILED DESCRIPTION - An apparatus (400) for forming solar cell comprises housing defining vacuum chamber, rotatable substrate apparatus configured to hold substrates on surfaces where each surface is disposed facing an interior surface of vacuum chamber, first sputtering source (435) configured to deposit absorber layer atoms of a first type over a portion of a surface of each one of the substrates, an evaporation source (440) disposed in first sub-chamber of vacuum chamber and configured to deposit absorber layer atoms of a second type over a portion of the surface of each one of the substrates, and first isolation source configured to isolate the evaporation source from first sputtering source. An INDEPENDENT CLAIM is included for forming a solar cell involving disposing substrates about several surfaces of a substrate apparatus that is operatively coupled to rotate within a vacuum chamber, rotating the substrate apparatus, forming an absorber monolayer over a surface of each one of the substrates, the step of forming involves depositing copper and gallium atoms over at least a portion of the surface of each substrates using a first sputtering source, depositing selenium atoms over at least a portion of the surface using an evaporation source; depositing indium atoms over at least a portion of the surface of each one of the substrates using a second sputtering source; and reacting the copper, gallium, and indium atoms with the selenium atoms to form the absorber monolayer, and repeating the step of forming to form an absorber layer.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of solar cell forming apparatus.    Apparatus (400)    First sputtering source (435)    Evaporation source (440)    Isolation pumps (452)    Buffer sub-chamber (455)