Improve the Performance of Porous Silicon for solar application by the embedding of Lithium Oxide nanoparticle

Abstract

The present research concerns the manufacture of porous silicon (PSi) by means of electrochemical etching method at (10 mA.cm-2)current density and approximately 10 minute etching time. The porous silicone layer was investigated by XRD, AFM and FTIR, and then Li2O nanoparticles (NPs) were prepared by a simple chemical method. And freshly embedding three drops of (Li2O) solution using the drop casting technique on the 40°C porous silicon(n-Psi) method to produce the heterojunction Al / Li2O / PSi / Al. The results of current-voltage ( I-V) test showed that the solar cell's maximum power conversion efficiency ( PCE) was 2.49% and thus the fill factor was 66.12%. A diffusion of Li2O NPs on PSi solar cell characteristics assures an improvement on their properties.