Over the last few years, a variety of different PV backsheet materials from various suppliers have emerged in the PV market. Whilst some of these new products rely on well-known and established materials and material combinations, others break new ground by introducing highly engineered new materials and concepts for the use in photovoltaic applications. The aim of the work presented is to compare the performance of different commercially available PV backsheet materials and material combinations regarding their stabilities under various prolonged accelerated aging conditions (e.g.: UV-exposure, damp-heat testing) according to the internationally valid standards (IEC 61730, IEC 61215, UL1703) but exceeding the requirements of those standards by a factor of 2 to 3 with respect to testing times and irradiation energy inputs. Key advantages as well as possible disadvantages of the tested materials are discussed critically, focusing on safety and performance aspects of the backsheet setups under evaluation.
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Steiner et al. (2012) studied this question.