Effect of TiO2 blocking layer on TiO2 nanorod arrays based dye sensitized solar cells

19th Chilean Physics Symposium 2014

Sivakumar, R.^1 ; Paulraj, M.^1

Department of Physics, Faculty of Physical Sciences and Mathematics, University of Concepcion, P.O. Box. 160-C, Concepcion, Chile^1

关键词: Chemical-bath deposition;    Electron-hole recombination;    Fluorine doped tin oxide;    Homogeneous layers;    Photo-electrodes;    Semiconductor/electrolyte interfaces;    Structural and morphological properties;    Titanium complexes;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/720/1/012036/pdf
DOI  :  10.1088/1742-6596/720/1/012036

来源: IOP

【 摘 要 】

Highly ordered rutile titanium dioxide nanorod (TNR) arrays (1.2 to 6.2 μm thickness) were grown on TiO2blocking layer chemically deposited on fluorine doped tin oxide (FTO) substrate and were used as photo-electrodes to fabricate dye sensitized solar cells (DSSC's). Homogeneous layer of TiO2on FTO was achieved by using aqueous peroxo- titanium complex (PTC) solutions via chemical bath deposition. Structural and morphological properties of the prepared samples were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM) measurements. TNR arrays (6.2 μm) with TiO2blocking layer showed higher energy conversion efficiency (1.46%) than that without TiO2blocking layer. The reason can be ascertained to the suppression of electron-hole recombination at the semiconductor/electrolyte interface by the effect of TiO2blocking layer.