An investigation into the fabrication of thin film silicon solar cells constructed onto polyester textile substrates is presented. The absence of a photovoltaic effect was found to be due to oxygen contamination in the silicon layers of the cell stack. This was concluded from FTIR absorption lines, as the Si-H2 peak had been blue-shifted from its original location, through the inductive effect of oxygen atoms being incorporated into the molecule. From the current-voltage analysis of the cells, the oxygen contamination was reconfirmed, as an electric field ample enough to create a depletion region across the i-layer to result in a PV effect, could not be established. Through the use of fibre melding techniques, amorphous/nanocrystalline silicon semiconductor junctions were successfully deposited on thermally bonded nonwoven spunlace. (hydroentanglement) PET. This new technique reduoed the density of electrical breaks within the textile, thus rectifying junctions possessing characteristics analogous to those deposited on solid glass sheets \vere produced.