Electronics based on bio-degradable materials is becoming increasingly attractive. Paper, a composite sheet of pressed cellulose fibers, has been considered for substrate in flexible thin film electronics, but so far only with a high density of fillers or with coatings to smoothen the surface and prevent short circuits. In the present study, filler-free paper is used, where each individual cellulose fiber is integrated carrier of an entire diode architecture. Thus shorts are hindered and the photosensitive surface area is additionally increased. Electrical conductivity is achieved by adsorption of silver nanowires to the cellulose fiber surface subsequent to paper formation. Electronic properties of the conductive paper and diodes are investigated, along with surface chemistry and micromorphology.