Effect of hexamethylenetetramine (HMT) concentration on the properties of boron doped ZnO nanotubes array films and the performance of dye-sensitized solar cell (DSSC)

摘要

This paper reports the effect of hexamethylenetetramine (HMT) concentration on the structural, morphological and optical properties of B-doped ZnO nanotubes arrays. B-doped ZnO nanotubes were employed as anode in dye-sensitized solar cells (DSSCs). The effect of these properties on the photovoltaic performance was also studied. B-doped ZnO nanotube arrays were prepared via hydrothermal technique on FTO substrate at constant concentration of zinc nitrate. The field emission scanning electron microscopy (FESEM) images indicate that the density and length of B-doped ZnO nanotubes increase with the concentration of HMT. However, the diameter decreases with the increase of HMT concentration. The J_(SC), V_(OC), FF and η of 1.48 mA cm~(-2), 0.38 V, 0.39 and 0.224% respectively have been obtained by the DSSC utilizing B-doped ZnO nanotube prepared at 0.06 M HMT.