TY - JOUR
T1 - Conveniently fabricated heterojunction ZnO/TiO 2 electrodes using TiO 2 nanotube arrays for dye-sensitized solar cells
AU - Liu, Rui
AU - Yang, Wein Duo
AU - Qiang, Liang Sheng
AU - Liu, Hsin Yi
N1 - Funding Information:
The authors would like to express their gratitude to the National Science Council of Taiwan for supporting this research under grant no. 100-2221-E-151-030 .
PY - 2012/12/15
Y1 - 2012/12/15
N2 - TiO 2 nanotube arrays with an inner average pore diameter of 83 nm and a length of 14 μm are grown on Ti foils by electrochemical anodization in ammonium fluoride-water-glycerol solution. ZnO is introduced into the TiO 2 nanotube arrays by a convenient electrodeposition technique. ZnO/TiO 2 nanocomposites supported on Ti substrate are used as the photo-anode electrode for dye-sensitized solar cells (DSSCs). The morphology, structure and electrochemical properties are investigated using field-emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, UV-vis diffusion reflection spectroscopy, X-ray photoelectron spectroscopy and cyclic voltammetry measurements. It is found that ZnO have been embedded in the TiO 2 nanotube arrays, and changed some photoelectric properties. The conversion efficiency of the dye-sensitized solar cells is more than doubled, compared with that of bare TiO 2 nanotube arrays with deposited 60 min. This improvement comes from the synergetic effect between ZnO and TiO 2, which increases dye absorption, electron transport and electron lifetime.
AB - TiO 2 nanotube arrays with an inner average pore diameter of 83 nm and a length of 14 μm are grown on Ti foils by electrochemical anodization in ammonium fluoride-water-glycerol solution. ZnO is introduced into the TiO 2 nanotube arrays by a convenient electrodeposition technique. ZnO/TiO 2 nanocomposites supported on Ti substrate are used as the photo-anode electrode for dye-sensitized solar cells (DSSCs). The morphology, structure and electrochemical properties are investigated using field-emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, UV-vis diffusion reflection spectroscopy, X-ray photoelectron spectroscopy and cyclic voltammetry measurements. It is found that ZnO have been embedded in the TiO 2 nanotube arrays, and changed some photoelectric properties. The conversion efficiency of the dye-sensitized solar cells is more than doubled, compared with that of bare TiO 2 nanotube arrays with deposited 60 min. This improvement comes from the synergetic effect between ZnO and TiO 2, which increases dye absorption, electron transport and electron lifetime.
UR - http://www.scopus.com/inward/record.url?scp=84865048814&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84865048814&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2012.07.097
DO - 10.1016/j.jpowsour.2012.07.097
M3 - Article
AN - SCOPUS:84865048814
SN - 0378-7753
VL - 220
SP - 153
EP - 159
JO - Journal of Power Sources
JF - Journal of Power Sources
ER -