Fabrication of well-aligned and dumbbell-shaped hexagonal ZnO nanorod arrays and their dye sensitized solar cell applications

被引：51
作者：
Qurashi, Ahsanulhaq [1 ,2 ,3 ]
Hossain, M. F. [1 ]
Faiz, M. [2 ,4 ]
Tabet, N. [2 ,4 ]
Alam, Mir Wakas [5 ]
Reddy, N. Koteeswara [6 ]
机构：
[1] Toyama Univ, Sch Engn, Toyama 9308555, Japan
[2] King Fahd Univ Petr & Minerals, Ctr Res Excellence Nanotechnol, Dhahran 31261, Saudi Arabia
[3] King Fahd Univ Petr & Minerals, Dept Chem, Dhahran 31261, Saudi Arabia
[4] King Fahd Univ Petr & Minerals, Dept Phys, Surface Sci Lab, Dhahran 31261, Saudi Arabia
[5] Fergusson Coll, Dept Phys, Pune 411004, Maharashtra, India
[6] GIST, Dept Nanobio Mat & Elect, Kwangju 500712, South Korea
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 503卷 / 02期
关键词：
ZnO; Dumbbell-shaped nanorods; Aligned nanorods; Solution method; Dye sensitized solar cell; GROWTH;
D O I：
10.1016/j.jallcom.2010.05.022
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Dumbbell-shaped hexagonal and well-aligned ZnO nanorod arrays (NRAs) were fabricated by simple and low temperature aqueous solution technique on ZnO-coated FTO substrate and in solution respectively. Structural analysis revealed an excellent crystal quality and wurtzite hexagonal structure of ZnO nanostructures. ZnO nanostructures were used as the wide band gap semiconducting photoelectrode in dye-sensitized solar cells (DSSCs). Well-aligned ZnO NRAs were greatly enhances dye adsorption, leading to improved light harvesting and overall efficiencies. Solar cells made from aligned ZnO NRAs showed photocurrents of 2.08 mA/cm(2), internal quantum efficiencies of 34.5%, and overall efficiencies of 0.32%. However, DSSC made from the randomly formed dumbbell-shaped hexagonal ZnO nanorods showed efficiency about 0.26%, with internal quantum efficiency of 31.5% respectively. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：L40 / L43
页数：4
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