NOVELTY - The photovoltaic module comprises an array of solar cells, where each of the solar cells in the array has a front light receiving side and an opposite back side, the back side of the solar cell has positive and negative polarity electrical contacts and the solar cells of the array have a common coefficient of thermal expansion, and a glass back-sheet (32) having a first surface facing the back side of the solar cells and an opposite second surface. The glass back sheet has: a coefficient of thermal expansion (2-4x 10-6 per degrees C).    USE - Used as a back-contact photovoltaic module.    ADVANTAGE - The photovoltaic module can be efficiently manufactured with long life span and increased resistance to moisture and air intrusion and without environmental and physical damages.    DETAILED DESCRIPTION - The photovoltaic module comprises an array of solar cells, where each of the solar cells in the array has a front light receiving side and an opposite back side, the back side of the solar cell has positive and negative polarity electrical contacts and the solar cells of the array have a common coefficient of thermal expansion, and a glass back-sheet (32) having a first surface facing the back side of the solar cells and an opposite second surface. The glass back sheet has: a coefficient of thermal expansion (2-4x 10-6 per degrees C) that is present within 10% of the coefficient of thermal expansion of the solar cells; and conductive circuits formed on the first surface of the glass back-sheet. The conductive circuits comprise a sintered metal, and an inorganic glass binder. The solar cells are silicon-based solar cells, crystalline silicon solar cells, polycrystalline silicon solar cells, microcrystalline silicon solar cells, amorphous silicon based solar cells, and single crystal silicon solar cells. The glass back sheet has a thickness of 1.5 mm. The glass binder present in the conductive circuits comprises 1-20 wt.% of the metal. The second surface of the glass back-sheet forms an exterior exposed surface of the photovoltaic module. The photovoltaic module further comprises a transparent polymeric front sheet (54) formed on the front light receiving side, a back encapsulant layer formed between the glass back sheet and the back side of the solar cells, and an interlayer dielectric layer (50) formed between the glass back sheet and the back side of the solar cells. The encapsulant layer and the interlayer dielectric layer have openings aligned with the electrical contacts on the back side of the array of solar cells. The interlayer dielectric layer is a screen printed layer printed on the first side of the glass back-sheet and/or on the back side of the solar cells. The conductive circuits are physically and electrically connected to the electrical contacts on the back side of the solar cells by a conductive solder or a conductive polymeric adhesive passing through openings in the interlayer dielectric layer. The front sheet comprises a fluoropolymer film. An INDEPENDENT CLAIM is included for a process for making a back-contact photovoltaic module.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic cross-sectional view of a process for forming a back-contact solar cell module.    Glass back-sheet (32)    Interlayer dielectric layer (50)    Front sheet (54)    Back side contact pads (61)    Back side conductive pads. (60)