NOVELTY - Method for increasing viscosity of a dopant material (10) to achieve gelatinous state in association with solar cell substrate involves: placing the material in a reservoir; aging the material for one hour; compressing the material until achieving a viscosity of no more two-hundred thousand centipoises; agitating the material until achieving a viscosity of at least fifty-thousand centipoises; heating the material to greater than room temperature; evaporating solvent from the material; and injecting the material into the reservoir to maintain a pre-determined consistency of the material.    USE - For increasing the viscosity of a dopant material to achieve a gelatinous state for use in association with a solar cell substrate (claimed).    ADVANTAGE - The method and apparatus to gel a dopant material, which may be a low viscosity liquid, enhance the high viscosity characteristics of the dopant material, and apply the dopant material towards beneficially coating dopant liquid in the manufacture of a three-dimensional thin-film solar cell substrate.    DETAILED DESCRIPTION - A method for increasing the viscosity of a dopant material (10) to achieve a gelatinous state for use in association with a solar cell substrate involves: placing a dopant material in a reservoir; aging the dopant material for at least one hour; compressing the dopant material until achieving a viscosity of no more two-hundred thousand centipoises; agitating the dopant material until achieving a viscosity of at least fifty-thousand centipoises; heating the dopant material to at least greater than room temperature; evaporating solvent from the dopant material; and injecting additional the dopant material into the reservoir to maintain a pre-determined consistency of the dopant material. An INDEPENDENT CLAIM is included for an apparatus for increasing the viscosity of a dopant material (10) to achieve a gelatinous state for use in association with a solar cell substrate comprising: a doctor bar reservoir (16), the doctor bar reservoir for aging dopant material and for evaporating solvent from the dopant material; a roller (12), the roller for compressing the dopant material; a pressing tool (14), the pressing tool for monitoring the consistency of the dopant material; and an agitator (18), the agitator for increasing the viscosity of the dopant material.    DESCRIPTION OF DRAWING(S) - The figure shows gelation process for coating a dopant material that is implemented in the manufacture of a solar cell substrate.    Dopant material (10)    Roller (12)    Pressing tool (14)    Doctor bar reservoir (16)    Agitator (18)    Gelation process layout (20)