Nanostructured Al-Zno/CdSe/Cu 2O ETA solar cells on Al-ZnO film/quartz glass templates

Abstract

The quartz/Al-ZnO film/nanostructured Al-ZnO/CdSe/Cu 2O extremely thin absorber solar cell has been successfully realized. The Al-doped ZnO one-dimensional nanostructures on quartz templates covered by a sputtering Al-doped ZnO film was used as the n-type electrode. A 19- to 35-nm-thin layer of CdSe absorber was deposited by radio frequency magnetron sputtering, coating the ZnO nanostructures. The voids between the Al-ZnO/CdSe nanostructures were filled with p-type Cu 2O, and therefore, the entire assembly formed a p-i-n junction. The cell shows the energy conversion efficiency as high as 3.16%, which is an interesting option for developing new solar cell devices. © 2011 Wang et al.