Investigation of monodispersed ZnO nanostructures for dye sensitized solar cells application

摘要

Monodispersed ZnO nanosheets have been synthesized by a facile wet chemical approach using hexamethylenetetramine (HMTA) as an organic ligand. The role of HMTA concentration on the formation and functional properties of ZnO nanostructure were investigated. Particle agglomeration was restricted and the nanosheet size was limited to 20 nm by passivation of the amine molecule. The 0.05 M HMTA-capped ZnO nanosheets yield a high near band edge luminescence intensity. Dye sensitized solar cells were fabricated using synthesized ZnO nanostructures and a maximum efficiency of 3.21 was achieved.