NOVELTY - Photovoltaic device comprises: (a) a photovoltaic region comprising a surface region and has a first thermal expansion constant; (b) a concentrator element comprising substantially of a polymer material and has a second thermal expansion constant; and (c) an elastomer material coupling a first portion of the surface region of the photovoltaic region to the exit region of the concentrator element.    USE - The photovoltaic device is used as solar panels.    ADVANTAGE - The photovoltaic device provides an easy to use process that relies upon conventional technology such as silicon materials. The method provides a process that is compatible with conventional process technology without substantial modifications to conventional equipment and processes. It provides an improved solar cell, which is less costly and easy to handle.    DETAILED DESCRIPTION - Photovoltaic device comprises: (a) a photovoltaic region comprising a surface region and has a first thermal expansion constant, where the surface region includes a first portion and a second portion and the second portion includes a first edge region and a second edge region; (b) a concentrator element comprising substantially of a polymer material and has a second thermal expansion constant, where the concentrator element is coupled to the photovoltaic region, and the concentrator element includes an aperture region and an exit region; and (c) an elastomer material coupling a first portion of the surface region of the photovoltaic region to the exit region of the concentrator element, while the first edge region and the second edge region remain exposed. The first edge region and the second edge region allow for compensation by thermal expansion of the concentrator element for a change in temperature of -45 degrees C to 95 degrees C to maintain the exit region to be optically coupled to the photovoltaic region. An INDEPENDENT CLAIM is included for a thermal management method for solar cell device.    DESCRIPTION OF DRAWING(S) - The drawing shows an expanded view of a solar cell.    Back cover member (100)    Surface area (101)    Back area (102)    Electrical members (103)    Photovoltaic strips (105)    Encapsulating material (115)    Front cover member (121)