Fabrication des homo-jonctions n-p d’oxyde de cuivre pour des applications aux photovoltaïques et à l’optoélectronique

Abstract

The synthesis of micro- and nano-systems is a major challenge at the industrial level, where the competition for miniaturization of systems is raging. It is well recognized that the development of new photovoltaic materials with high conversion efficiencies, inexpensive and non-toxic costs using energy efficient processes is essential. Our choice was focused on cuprous oxide (Cu2O) which is a promising material in the photovoltaic field with very interesting physicochemical properties. The main objective of this thesis work is to elaborate p-Cu2O and n- Cu2O by adjusting the electrodeposition parameters to obtain optimal condition for solar cell fabrication. Thirteen homo-junctions based on Cu2O were electrodeposited consecutively starting by n-Cu2O, and followed by p-Cu2O on a transparent conductive substrate, these homo-junctions were analyzed by various structural, morphological, optical and electrical characterization. The best performance was attributed to the homo-junction PN13 with a conversion efficiency of 0.752%, These results represent a good starting point for the development of low cost solar cells devices.