Photovoltaic yarn and a production method

A photovoltaic yarn, consisting of:

• at least one texturized yarn,
• at least one intermediate layer covering the at least one texturized yarn to increase an adhesion strength of the at least one texturized yarn,
• at least one cathode layer consisting of a gallium-indium alloy coating on the at least one texturized yarn by means of the at least one intermediate layer,
• at least one active layer consisting of an electron donor material selected from the group consisting of poly [N-9′-hepta-decanyl-2,7-carbazole-alt-5,5-(4′,7′-di-2-thienyl-2′,1′,3′-benzothiadiazole)](PCDTBT), poly [2,6-(4,4-bis-(2-ethylhexyl)-4H-cyclopenta [2,1-b;3,4-b′]dithiophene)-alt-4,7(2,1,3-benzothiadiazole)] (PCPDTBT), poly ({4,8-bis[(2-ethylhexyl) oxy]benzo[1,2-b:4,5-b′] dithiophene-2,6-diyl}{3-fluoro-2-[(2-ethylhexyl) carbonyl] thieno[3,4-b]thiophenediyl}) (PTB7) and semi conductive polymers, and an electron acceptor material selected from the group consisting of 1′,1″,4′,4″-Tetrahydro-di[1,4]methanonaphthaleno[1,2:2′,3′,56,60:2″,3″ ][5,6] fullerene-C60, C60 derivative, indene-C60 bisadduct (ICBA) and semi conductive polymers,
• at least one anode layer, wherein the at least one anode layer is a mixture of polymers consisting of poly (3,4-ethylenedioxythyophene) (PEDOT), polystyrenesulphonate (PSS), dimethyl sulfoxide (DMSO) and triton X-100,
• wherein the at least one texturized yarn is located at a center and the at least one intermediate layer and the at least one cathode layer and the at least one active layer and the at least one anode layer are concentrically formed radially outward, respectively, from the at least one texturized yarn so that the photovoltaic yarn defines a filament structure.