Modified electrodes for dye sensitized solar cells  Dye sensitized solar cells are one of the most promising solar energy capture systems to emerge in the past few decades. Their basic construction includes TiO2 electrode mounted on a transparent conductive oxide, which has been light-sensitized using a monolayer of organometallic or organic dye molecules. The dye molecules absorb the light, injecting electron into TiO2 film, which transports it to the back electrode. This is done against the competetive process of recombination of injected electron with the resulting hole on the dye molecule, or scavenging of the injected electron by the cell electrolyte. Simulated surface of rutile TiO2 with vanadium oxide monolayer. One of the challenges in achieving the necessary level of performance of this type of solar cells includes improvement of performance of TiO2 electrode. We are looking at different ways of altering the surface and the structure of TiO2 electrode and the effect these modifications have on the characteristics of the electrode and its performance in a dye-sensitized solar cell. The correlation of experimental results with theoretical calculations offers us a broad perspective of the problem and possible solutions.