Hydrothermal Growth and Application of ZnO Nanowire Films with ZnO and TiO2Buffer Layers in Dye-Sensitized Solar Cells

• DOI: 10.1007/s11671-009-9425-4
• Publication Date: 2009-09-15T07:24:22Z
• Authors: Weiguang Yang; Farong Wan; Siwei Chen; Chunhua Jiang
• Keywords: Nanochemistry

This paper reports the effects of seed layers prepared by spin-coating and dip-coating methods on morphology density ZnO nanowire arrays, thus performance nanowire-based dye-sensitized solar cells (DSSCs). The films with thick buffer layer (~0.8-1 μm thick) can improve open circuit voltage DSSCs through suppressing carrier recombination, however, cause decrease dye loading absorbed nanowires. In order to further investigate effect TiO2buffer DSSCs, compared without a compact layer, photovoltaic conversion efficiency TiO2layer (~50 nm were improved 3.9-12.5 2.4-41.7%, respectively. be attributed introduction sputtering method, which effectively suppressed recombination occurring across both film-electrolyte interface substrate-electrolyte interface.