Study on Hybrid Structure on TiO2 Nanorods and Graphene Enhanced P3HT for Solar Cells Application

Abstract

Recently, hybrid structure graphene / organic nano composite have been studied for low cost photovoltaic devices (P3HT/Graphene ) can be formed by solution process at room temperature, in this study, we demonstrate a hybrid solar cells composite of (Graphene-P3HT/TiO2 Nanowire to allowed for distributed the organic materials among the nanorode, the organic which cover by spin coating to provide higher mobility and conductivity of (G-P3HT) where employed as P-type or Hole transparent materials with TiO2 NW as a photoanode. The nanocoposite of P3HT (G-P3HT, 10% wt graphene) deposited on TiO2 NW by spin couter technique. The solar cells based on vertical TiO2 NW nanowire arrays by utilizing a spin couter spin speed. The initial results showed the power conversion efficiency of 0.5 %. The cells with G-P3HT showed different performance. The power conversion efficiency was improved from 0.3 for spin couter speed 300 rpm to 1.3 at 500 rpm for G-P3HT among different spin speed solar cells. It exhibited tunable power conversion efficiency with spin speed, with very thin materials and in expensive processing ,hybrid G/P3HT /Nanorod solar cells are promising as an economically viable alternative energy solution