PHOTOVOLTAIC ELEMENT WITH OPTICALLY FUNCTIONAL CONVERSION LAYER FOR IMPROVING THE CONVERSION OF THE INCIDENT LIGHT AND METHOD FOR PRODUCING SAID PHOTOVOLTAIC ELEMENT

摘要

The invention relates to a photovoltaic element (1) comprising an optically functional surface layer (5) for improving the conversion of the incident light. The functioning of said layer involves absorbing incident sunlight having a low wavelength and emitting it again as light radiation having a higher wavelength, such that this light spectrum becomes usable for solar cells. In order to solve the currently unsolved problem of embedding such a layer into a thin-film solar cell (2) with a substrate (4) arranged on the front side, whilst ensuring high weathering resistance, it is proposed to arrange the optical functional layer (5) in an additional encapsulation element (10) on the front side and thus to construct the photovoltaic element as a double or multiple composite assembly.