NOVELTY - A photovoltaic module comprises a composite encapsulant transmissive to visible and near visible wavelengths of the solar spectrum interposed between solar cells (102) and the light transmissive front layer. The composite encapsulant comprises a bulk encapsulant transmissive to visible and near visible wavelengths of the solar spectrum, and an encapsulant CTE modifier in the bulk encapsulant that interacts with the bulk encapsulant so that the effective CTE of the composite encapsulant is less than that of the bulk encapsulant.    USE - A photovoltaic module.    ADVANTAGE - The module addresses module reliability challenges relating to the issue of dimensional changes of the encapsulant due to changes in temperature which occur during product manufacturing, testing or normal operating environment thus having improved module safety and performance.    DETAILED DESCRIPTION - A photovoltaic module comprises:    (A) a light transmissive front layer (104);    (B) a back layer (106);    (C) interconnected photovoltaic cells disposed between the light transmissive front layer and the back layer; and    (D) a composite encapsulant transmissive to visible and near visible wavelengths of the solar spectrum interposed between a solar cells (102) and the light transmissive front layer.    The composite encapsulant comprises a bulk encapsulant transmissive to visible and near visible wavelengths of the solar spectrum and having a base coefficient of thermal expansion (CTE), and an encapsulant CTE modifier in the bulk encapsulant. The encapsulant CTE modifier is distributed through the composite encapsulant thickness and interacts with the bulk encapsulant so that the effective CTE of the composite encapsulant is less than that of the bulk encapsulant. An INDEPENDENT CLAIM is included for a method of making a photovoltaic module.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic cross-sectional view of photovoltaic module.    Solar module (100)    Solar cell (102)    Front layer (104)    Back layer (106)    Thermoplastic polymer encapsulant (110)