한국표면공학회지 (49권6호 490-497)
Development of Inverted Organic Photovoltaics with Anion doped ZnO as an Electron Transporting Layer
Jeong, Jae Hoon;Hong, Kihyon;Kwon, Se-Hun;Lim, Dong Chan;
Electrochemical Department, Surface Technology Division, Korea Institute of Materials Science (KIMS);School of Materials Science and Engineering, Pusan National University;
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:Cl-x (x=0wt%).
Chlorine;ZnO ripple;Organic photovoltaics;Electron transporting layer;Doping;Sol-gel;
PDF