TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The metal layer comprises silver. The organic conjugated polymer is a hole conducting polymer. It is a polythiophene derivative, where the polythiophene derivative is selected from poly(3-hexylthiophene) (P3HT), poly(3-(2-methylhex-2-yl)oxycarbonyldithiophene) (P3MHOCT) and poly(dithienothiophene-co-dialkoxybenzothiadiazole) (PDTTDABT). The light harvesting layer further comprises an electron acceptor selected from a transition metal oxide and a fullerene. The first charge selective layer is an electron transporting layer, and the second charge selective layer is a hole transporting layer. Electron transporting layer comprises zinc oxide; and the hole transporting layer comprises poly(3,4-ethylenedioxythiophene)poly(styrenesulfonate) (PEDOT:PSS) or vanadium pentoxide (V2O5). The metal ink is UV-curable ink. It comprises silver. It is selected from silver inks comprising butylacetate and/or ethyleneglycol diacetate and/or diethyleneglycol diacetate and UV-curable silver inks comprising an oligomeric acrylic resin as the UV curable agent. Organic hole conducting polymer is a polythiophene derivative. The second charge selective layer comprises a hole transporting compound selected from PEDOT:PSS, PEDOT: polythiophenes (PTS), vapor phase deposited PEDOT, polyprodot, polyaniline, polypyrrole, or hydrated V2O5, or alternatively comprises an electron transporting compound which comprises zinc oxide (ZnO). Preferred Composition: The organic hole conducting polymer, when placed in contact with the metal ink for 60 seconds, shows an uptake of at least 1% by weight of the ink into the organic hole conducting polymer, preferably an uptake of at least 10% by weight. Preferred Method: In making photovoltaic cell module, a hole transporting compound selected from PEDOT:PSS, PEDOT:PTS, vapor phase deposited PEDOT, polyprodot, polyaniline, or polypyrrole is used as the second charge selective layer, a layer thickness of at least 5 mu m is formed, and preferably the layer thickness is from 10-25 more preferably from 20 to 25 mu m. Vanadium oxide is used as the second charge selective layer, a layer thickness of between 8 nm and 100 nm is formed, preferably a layer thickness of between 15 nm and 50 nm. The metal layer is formed such that it extends over the active area of each cell. It is formed as a metal grid over the active area. At least one step method is carried out using a roll-to-roll printing process.