Patent ID: 7253354

Claim:
Liquid-containing photovoltaic element ( 1 ; 10 , 20 ), comprising a plate work electrode and a plate counter-electrode adhered to the work electrode by means of a vapour and liquid-tight peripheral edge, wherein the work electrode and the counter-electrode are each formed on a flat substrate ( 2 , 2 ′; 12 , 12 ′) provided with an electrically conductive layer ( 3 , 3 ′; 13 , 13 ′) and wherein a liquid ( 8 ) is received into a space between the work electrode, the counter-electrode and the peripheral edge, characterized in that a system of mutually connected electrical conductors ( 4 , 4 ′; 14 , 14 ′) is provided on the conductive layer ( 3 , 3 ′; 13 , 13 ′) of each of the substrates ( 2 , 2 ′; 12 , 12 ′) for the work electrode and the counter-electrode, which conductors ( 4 , 4 ′; 14 , 14 ′) have a mirror-symmetrical form relative to each other and are provided with a layer ( 5 , 5 ′; 15 , 15 ′) of an electrically insulating material, which layer ( 5 , 5 ′) electrically isolates the conductors ( 4 , 4 ′) and provides the vapour and liquid-tight peripheral edge, in which layer ( 5 , 5 ′; 15 , 15 ′) there is provided at least one recess ( 11 , 11 ′; 21 , 21 ′) for an electrical contact ( 9 , 9 ′; 19 , 19 ′) on a conductor of the conductors ( 4 , 4 ′; 14 , 14 ′) in a manner such that the electrical contact ( 9 , 9 ′: 19 , 19 ′) is left clear by the electrically insulating material over the conductors ( 4 , 4 ′: 14 , 14 ′) so that it contacts the conductor of the conductors.