Ultralong Rutile TiO2 Nanowire Arrays for Highly Efficient Dye-Sensitized Solar Cells.
Vertically aligned rutile TiO2 nanowire arrays (NWAs) with lengths of ∼44 μm have been successfully synthesized on transparent, conductive fluorine-doped tin oxide (FTO) glass by a facile one-step solvothermal method. The length and wire-to-wire distance of NWAs can be controlled by adjusting the ethanol content in the reaction solution. By employing optimized rutile TiO2 NWAs for dye-sensitized solar cells (DSCs), a remarkable power conversion efficiency (PCE) of 8.9% is achieved. Moreover, in combination with a light-scattering layer, the performance of a rutile TiO2 NWAs based DSC can be further enhanced, reaching an impressive PCE of 9.6%, which is the highest efficiency for rutile TiO2 NWA based DSCs so far.
Hailiang
H
Li
Key Laboratory for Photonic and Electric Bandgap Materials, Ministry of Education, Harbin Normal University , Harbin 150025, China.
Qingjiang
Q
Yu
Yuewu
Y
Huang
Cuiling
C
Yu
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, China.
Renzhi
R
Li
Jinzhong
J
Wang
Fengyun
F
Guo
Shujie
S
Jiao
Shiyong
S
Gao
Yong
Y
Zhang
Key Laboratory for Photonic and Electric Bandgap Materials, Ministry of Education, Harbin Normal University , Harbin 150025, China.
Xitian
X
Zhang
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, China.
Peng
P
Wang
Liancheng
L
Zhao
TiO2; charge recombination; dye-sensitized solar cells; nanowire arrays; solvothermal synthesis