Dye-sensitized solar cells (DSCs) have long been envisaged as a cost-effective alternative to conventional photovoltaic technologies, but further optimization of the cells performance and manufacturing processes is still underway.Recent studies suggest the use of one-dimensional morphologies such as titania nanotubes, nanowires and fibers to improve electron transport in the semiconductor, also providing a larger surface area for dye adsorption and enhancing light harvesting efficiency.Among these alternatives, photoanodes made of fibrous materials with a much lower tortuosity of the pores compared to mesoporous nanoparticulated films, apparently offers a decisive advantage.In fact, with the advent of printed electronics, paper has emerged as a focus area for researchers developing innovative paper-like substrates for lightweight, flexible, biodegradable electronic devices.The use of cellulose fibers embedded with photoluminescent and photochromic nanoparticles may enable the development of thin films for photovoltaics such as the DSCs, providing designers with energy sources for day-to-day solutions or sophisticated architectural projects.Cellulose fibers can be modified to different stages such as conducting or semiconducting surfaces by coating the intrinsically rough papers surface with organic/inorganic nanostructures with enhanced electrical and optical properties.Several coating methods have been used for thin-film formation but the quest today is how to grow those nanostructures directly onto substrates avoiding the often energy-consuming and expensive transfer processes.This work demonstrates the potential of incorporating light-harvesting nanostructures and titania nanoparticles into cross-linked cellulose fibers, and use this new material architecture as a semiconductor for DSCs.Sintering TiO2 precursors (titanium tetraisopropoxide) at moderate temperatures (<200℃) was performed to produce mechanically stable, electrically conducting cellulose/titania nanocomposite films on glass substrates: under one-third Sun typical lower-light, real-world light conditions, tens of A.cm-2 were obtained with DSCs made of bleached Eucalyptus globulus kraft paper.