Abstract: The invention relates to a multilayer solar element (S), which includes a first layer (1) of a photovoltaic thin-film laminate which is coated on its bottom side as a bonding layer to a base or to a support material over its full surface area with a self-adhesive second layer (2) or a non-self-adhesive second layer (2?), or over part of its surface area with a self-adhesive second layer (2) or a non-self-adhesive second layer (2?) by adhesively bonding a self-adhesive or non-self-adhesive polymer-modified bitumen.