title: High-efficiency AgInS(2)-modified ZnO nanotube array photoelectrodes for all-solid-state hybrid solar cells.
abstract: Highly ordered AgInS2-modified ZnO nanoarrays were fabricated via a low-cost hydrothermal chemical method, and their application as all-solid-state solar cells was also tested. A sensitizer and a buffer layer were developed around the surface of ZnO nanotubes in the preparation process, and this method is easily be manipulated to produce uniform structure. In this structure, the ZnO served as direct electron transport path, the ZnS as the buffer layer, and the ternary sensitizer AgInS2 as absorber and outer shell. The novel all-solid-state hybrid solar cells (ITO/ZnO/ZnS/AgInS2/P3HT/Pt) showed improved short-circuit current density (Jsc) of 7.5 mA/cm(2), open-circuit voltage (Voc) of 512 mV, giving rise to a power conversion efficiency of 2.11%, which is the relatively highest value ever reported for ZnO-based all-solid-state hybrid solar cells. This better result is attributed to the improved absorption spectrum, high speed of photoinduced charge transmission velocity, and appropriate gradient energy gap structure, which implies a promising application in all-solid-state solar cells.
authors.affiliation: School of Materials Science and Engineering, Tianjin Chengjian University , Tianjin 300384, China.
authors.forename: Jianhua
authors.initials: J
authors.lastname: Han
authors.forename: Zhifeng
authors.initials: Z
authors.lastname: Liu
authors.forename: Keying
authors.initials: K
authors.lastname: Guo
authors.forename: Jing
authors.initials: J
authors.lastname: Ya
authors.forename: Yufeng
authors.initials: Y
authors.lastname: Zhao
authors.forename: Xueqi
authors.initials: X
authors.lastname: Zhang
authors.forename: Tiantian
authors.initials: T
authors.lastname: Hong
authors.forename: Junqi
authors.initials: J
authors.lastname: Liu
keywords: AgInS2; all-solid-state; buffer layer; highly ordered; solar cell