NOVELTY - The concentrator solar cell module (100) comprises solar cells (10), and a light concentrating article. The light concentrating article is arranged for concentrating 1.02-2000 suns of solar energy onto the solar cells, comprises an ionomer composition, and acts as a reflective optical system, a refractive optical system or both a reflective and a refractive optical system. The ionomer composition comprises or is prepared from an ionomer. The ionomer has a temperature onset of creep and a peak melting temperature, and comprises carboxylate groups and cations.    USE - Used as a concentrator solar cell module.    ADVANTAGE - The concentrator solar cell module is stable and highly efficient for a long period of time (20-30 years), and can be economically and easily formed with increased amount of electricity.    DETAILED DESCRIPTION - The concentrator solar cell module (100) comprises solar cells (10), and a light concentrating article. The light concentrating article is arranged for concentrating 1.02-2000 suns of solar energy onto the solar cells, comprises an ionomer composition, and acts as a reflective optical system, a refractive optical system or both a reflective and a refractive optical system. The ionomer composition comprises or is prepared from an ionomer. The ionomer has a temperature onset of creep and a peak melting temperature, and comprises carboxylate groups and cations. The temperature onset of creep is 5 degrees C higher than the peak melting temperature. The ionomer is the product of a neutralization of a precursor alpha olefin carboxylic acid copolymer. The precursor alpha olefin carboxylic acid copolymer comprises copolymerized units of an alpha olefin having 2-10 carbons and 20-25 wt.% of copolymerized units of an alpha , beta -ethylenically unsaturated carboxylic acid having 3-8 carbons based on the total weight of the alpha olefin carboxylic acid copolymer, and 20-55% of the total content of the carboxylic acid groups present in the precursor alpha olefin carboxylic acid copolymer are neutralized to form the ionomer. The reflective optical system comprises the ionomer composition, and is a reflective mirror, a reflective parabaloid, a reflective dish, and a linear parabolic trough. The refractive optical system comprises the ionomer composition, and is a refractive lens and a dichroic filter. The refractive lens is derived from imaging optics, and is a shaped incident encapsulant layer, a cover slide comprising a converging lens, a cover glass comprising a converging lens, a converging lens, a simple lens, a complex lens, a biconvex lens, a plano-convex lens, a positive meniscus lens, a plano-concave lens, an aspheric lens, an inflatable lens, a Fresnel lens, a linear Fresnel lens, a linear arched Fresnel lens, a point focus Fresnel lens and/or a segmented Fresnel lens. The refractive lens is coated with an anti-reflective coating.    DESCRIPTION OF DRAWING(S) - The diagram shows a cross-section view of a concentrator solar cell module.    Concentrator solar cell module (100)    Solar cell (10)    Heat sink (20)    Substrate (30)    Lens (40)    Light ray. (50)