NOVELTY - Electroplating a stacked layer of films in sequentially disposed electroplating units onto a continuously moving roll-to-roll sheet to manufacture solar cells, includes adjusting the thickness of each of the films toward a predetermined thickness value for that film using the thickness signal for that film for a subsequent portion of the roll-to-roll sheet that follows the portion of the roll-to-roll sheet, and/or tuning the films based on the amount of each of the elements deposited so that the stacked layer of the films has a predetermined molar ratio range of the elements.    USE - Electroplating a stacked layer of films in sequentially disposed electroplating units onto a continuously moving roll-to-roll sheet to manufacture solar cells and radiation detector.    DETAILED DESCRIPTION - Electroplating a stacked layer of films in sequentially disposed electroplating units onto a continuously moving roll-to-roll sheet to manufacture solar cells, comprises:    (A) continuously moving the roll-to-roll sheet through each of the sequentially disposed electroplating units so that continuous portions of a top surface of the roll-to-roll sheet are positioned for electroplating to occur over them when disposed in each of the electroplating units;    (B) continuously electroplating each one of the films over the top surface of the roll-to-roll sheet using each of the electroplating units as the roll-to-roll sheet moves through them, where roll-to-roll sheet includes copper (Cu), indium (In), and gallium (Ga) elements;    (C) detecting a thickness of at least one of the films electroplated over a portion of the roll-to-roll sheet and generating a thickness signal corresponding to them, where the step of continuously electroplating includes adjusting the thickness of each of the films toward a predetermined thickness value for that film using the thickness signal for that film for a subsequent portion of the roll-to-roll sheet that follows the portion of the roll-to-roll sheet, and/or after the step of detecting, tuning the films based on the amount of each of the elements deposited so that the stacked layer of the films has a predetermined molar ratio range of the elements;    (D) applying selenium (Se) to at least one of the films;    (E) reacting the films within a particular portion of the roll-to-roll sheet and Cu, In, and Ga elements with Se to form Cu(In,Ga)Se2 absorber layer after completion of the steps of continuously moving, continuously electroplating, detecting, and applying for the particular portion of the roll-to-roll sheet; and    (F) forming a transparent layer including cadmium sulfide (CdS) film and zinc oxide (ZnO) film, on Cu(In,Ga)Se2 absorber layer associated with the particular portion of the roll-to-roll sheet, obtaining solar cell(s) disposed within the particular portion of the roll-to-roll sheet.    DESCRIPTION OF DRAWING(S) - The drawing is a flowchart illustrating the method of electroplating stacked layer of films in sequentially disposed electroplating units onto continuously moving roll-to-roll sheet to manufacture solar cells.