Academic
Publications
Cathodic electrodeposition of p-CuSCN nanorod and its dye-sensitized photocathodic property

Cathodic electrodeposition of p-CuSCN nanorod and its dye-sensitized photocathodic property,10.1016/j.phpro.2011.05.005,Physics Procedia,Lina Sun,Keig

Cathodic electrodeposition of p-CuSCN nanorod and its dye-sensitized photocathodic property  
BibTex | RIS | RefWorks Download
Mechanism of cathodic electrodeposition of CuSCN from ethanolic solutions containing Cu2+ and SCN- was studied in detail. Job's plot for the absorption spectra of mixed solution in various Cu2+: SCN- ratios have revealed the presence of [Cu(SCN)2]0 as a soluble species responsible to the electrode process in SCN- rich solutions. From Levich analysis of diffusion limited current employing a rotating disc electrode (RDE), diffusion coefficients of 5.2 × 10-6cm2 s-1 and 3.0 × 10-6cm2 s-1 in ethanol at 298K were determined for [Cu(SCN)2]0 and [Cu(SCN)]+, respectively. Morphology as well as crystallographic orientation of the product films significantly changed by the composition of the electrolytic baths. When the bath contains excess of Cu2+ and mixed solvent up to 50% ethanol content to water was used, strong anisotropic crystal growth along the c-axis was observed. When electrolysis was carried out under stationary conditions, the nanorod structures in high aspect ratios could be obtained, due to the limited transport of the active species to the tip of the rods. When rhodamine B was adsorbed onto such CuSCN as a sensitizer, dye-sensitized photocathodic current was observed with an incident photon to current conversion efficiency (IPCE) of 4.4% at the absorption maximum, suggesting its usefulness as the hole conducting electrode in construction of nanostructured solar cells.
Journal: Physics Procedia , vol. 14, pp. 12-24, 2011
Cumulative Annual
View Publication
The following links allow you to view full publications. These links are maintained by other sources not affiliated with Microsoft Academic Search.