Abstract
A ZnTe/polymer junction has been fabricated and the photovoltaic properties studied. The polymer is a blend of 50 wt% chitosan and 50 wt% polyethylene oxide (PEO). The polymer blend was complexed with ammonium iodide (NH 4I) and some iodine crystals were added to the polymer–NH 4I solution to provide the I −/I 3− redox couple. The ionic conductivity of the polymer electrolyte is 4.32×10 −6 S cm −1 at room temperature. ZnTe was electrodeposited on ITO conducting glass. The polymer film was sandwiched between the ZnTe semiconductor and an ITO glass to form a ZnTe/polymer electrolyte/ITO photovoltaic cell. The open circuit voltage ( V oc) of the fabricated cells ranges between 300 and 400 mV and the short circuit current between 2 and 5 μA.
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