NOVELTY - Fabricating a multijunction photovoltaic (PV) cell comprises providing a stack comprising junctions on a substrate, each of the junctions having a respective bandgap, where the junctions are ordered from the junction having the smallest bandgap being located on the substrate to the junction having the largest bandgap being located on top of the stack (101); and forming a top metal layer having a tensile stress, on top of the junction having the largest bandgap (102).    USE - The method is used for fabricating a multijunction PV cell (claimed).    ADVANTAGE - The PV cell is a multijunction flexible PV cell.    DETAILED DESCRIPTION - Fabricating a multijunction PV cell comprises providing a stack comprising junctions on a substrate, each of the junctions having a respective bandgap, where the junctions are ordered from the junction having the smallest bandgap being located on the substrate to the junction having the largest bandgap being located on top of the stack (101); forming a top metal layer having a tensile stress, on top of the junction having the largest bandgap (102); adhering a top flexible substrate to the metal layer (103); and spalling a semiconductor layer from the substrate at a fracture in the substrate, where the fracture is formed in response to the tensile stress in the top metal layer (104). An INDEPENDENT CLAIM is a multijunction PV cell comprising a bottom flexible substrate; a bottom metal layer located on the bottom flexible substrate; a semiconductor layer located on the bottom metal layer; and a stack comprising junctions located on the semiconductor layer, each of the junctions having a respective bandgap, where the junctions are ordered from the junction having the smallest bandgap being located on the substrate to the junction having the largest bandgap being located on top of the stack.    DESCRIPTION OF DRAWING(S) - The drawing shows a flow chart of a method for fabricating a multijunction PV cell.    Providing (101)    Forming (102)    Adhering (103)    Spalling (104)    Forming (105)    Adhering (106)    Removing (107)    Performing (108)