Development of Inverted Organic Photovoltaics with Anion doped ZnO as an Electron Transporting Layer

Abstract

In this study, 3-dimensional ripple structured anion (chlorine) doped ZnO thin film are developed, and used as electron transporting layer (ETL) in inverted organic photovoltaics (I-OPVs). Optical and electrical characteristics of ZnO:Cl ETL are investigated depending on the chlorine doping ratio and optimized for high efficient I-OPV. It is found that optimized chlorine doping on ZnO ETL enhances the ability of charge transport by modifying the band edge position and carrier mobility without decreasing the optical transmittance in the visible region, results in improvement of power conversion efficiency of I-OPV. The highest performance of 8.79 % is achieved for I-OPV with ZnO:Cl-x (x=0.5wt%), enhanced ~10% compared to that of ZnO:Clx (x=0wt%).

Comparative study of photocatalytic activity of metals- and non-metals doped ZnO and TiO2 nanocatalysts for advanced photocatalysis

“…Also, the number of oxygen vacancies in ZnO have a key role in influencing the photo-activity of ZnO doped with S. In the photocatalytic reaction, oxygen vacancies become centers for trapping e -. Therefore, the more the oxygen vacancies there are, the greater the catalytic activity [85,86]. Figure 8 shows the mechanism of the pollutant degradation by metals and non-metals doped ZnO [87].…”