Influence of Coumarin 343 Monomer Codeposition on the Structure and Electronic Properties of Electrodeposited ZnO

Abstract

Codeposition of the dye coumarin 343 (C343) in its monomeric form strongly influences the crystallographic orientation and electronic properties of electrodeposited ZnO films. This is opposed to the codeposition of Eosin Y (EY), which forms aggregates in ZnO/dye films, leading to much less influence on crystallographic orientation and electronic properties. Highly porous ZnO films are formed upon dye extraction in both cases, which is due to the action of the dye aggregates as pore templates in the case of EY and due to a blocking effect on ZnO electrodeposition, as opposed to the catalytic effect of EY, in the case of C343.