NOVELTY - Forming solar cell involves forming absorber layer over porous conductive substrate; exposing absorber layer to chemical species to modify physical and chemical property of absorber layer proximate the substrate; and forming ohmic contact at interface of absorber layer and substrate, where absorber layer comprises cadmium telluride, and involves applying bromine solution to substrate to transform region into tellurium (Te) rich region; applying copper containing solution to Te rich region and annealing stack to form copper tellurium complex at interface of Te rich region and substrate.    USE - For manufacturing solar cells or photovoltaic cells that are useful to convert photons into electricity by photovoltaic effect; in fabrication of solar panels or solar modules.    ADVANTAGE - The transparent conductive oxides have better resistance, transmission characteristics and high temperature stability. The graphite foils have high electrical conductivity, can be manufactured cheaply, have coefficient of thermal expansion that is well matched to that of cadmium telluride, is stable up to very high temperatures, and can be flexible. The graphite foil is treated with chemical solution to prevent crack formation in the electrodeposited layer. The improved mechanical strength provides reduced complexity of mechanism for making contact to graphite foil. The tape provides enhanced tear strength to the graphite foil.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for forming photovoltaic cells involving forming absorber layer over graphite foil, where graphite foil is continuous and flexible; forming window layer over absorber layer; forming back contact layer at interface between graphite foil and absorber layer; forming front contact layer over window layer; and isolating photovoltaic cells from photovoltaic device thus formed; where at least one of the absorber layer, window layer, back contact layer and front contact layer is formed by moving graphite foil through line type manufacturing system.    DESCRIPTION OF DRAWING(S) - The figure shows process flow describing the method.