Abstract: The invention is directed to a polymer sheet and its use as part of a solar panel and glass element. The sheet comprises multiple coextruded polymer layers, wherein at least two or more layers of the polymer sheet comprise a luminescence downshifting compound for at least partially absorbing radiation having a certain wavelength and re-emitting radiation at a longer wavelength than the wavelength of the absorbed radiation, and wherein a luminescence downshifting compound in a first polymer layer can absorb more radiation at a lower wavelength than the luminescence downshifting compound present in a next layer.

Abstract: The invention is directed to a polymer sheet and its use as part of a solar paneland glass element. The sheet comprises multiple coextruded polymer layers, wherein at least two or more layers of the polymer sheet comprise a luminescence downshifting compound for at least partially absorbing radiation having a certain wavelength and re-emitting radiation at a longer wavelength than the wavelength of the absorbed radiation, and wherein a luminescence downshifting compound in a first polymer layer can absorb more radiation at a lower wavelength than the luminescence downshifting compound present in a next layer.

Abstract: The present invention relates to a multilayer film for the encapsulation of photovoltaic cells, comprising: (a) at least a first, outer thermoplastic polymer layer;(b) a second thermoplastic polymer intermediate layer arranged between the first and the third layer, and (c) a second, outer thermoplastic polymer layer, wherein at least one of layers (a), (b) or (c) is opaque.