Improvement of Photovoltaic Conversion Efficiency and also Photoluminescence Efficiency of p-Cu2O/n-ZnO thin film heterostructures by Cyanide Treatment

Abstract

Crown-ether cyanide (CN) treatments of the as deposited polycrystalline p-Cu 2 O/i-ZnO/n-ZnO/glass heterojunction photovoltaic structures were performed with the variation of time. Effects of defect passivation and improvement of photovoltaic conversion efficiency as well as photoluminescence efficiency were demonstrated with the cyanide treated samples. Optimum time of cyanide treatment was found to be 3 minutes.