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Flexible Dye-Sensitized Solar Cell Based on Vertical ZnO Nanowire Arrays

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ABSTRACT

Flexible dye-sensitized solar cells are fabricated using vertically aligned ZnO nanowire arrays that are transferred onto ITO-coated poly(ethylene terephthalate) substrates using a simple peel-off process. The solar cells demonstrate an energy conversion efficiency of 0.44% with good bending tolerance. This technique paves a new route for building large-scale cost-effective flexible photovoltaic and optoelectronic devices.

No MeSH data available.


a A SEM image and b XRD pattern of vertically aligned ZnO nanowire array grown on the ZnO seed film.
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Figure 1: a A SEM image and b XRD pattern of vertically aligned ZnO nanowire array grown on the ZnO seed film.

Mentions: Single crystalline wurtzite ZnO film with preferential direction along the c-axis has been reported [23]. The seed film facilitates the epitaxial growth of nanowires along c-axis due to the perfect match of lattice parameters [24]. Figure 1a is a scanning electron microscopy (SEM) image of ZnO nanowire arrays, showing hexagonal cross-section facets grown from the seed substrate. The average length of nanowire is ~15 μm, while the diameter falls in the range of 200–400 nm. Figure 1b shows the X-ray diffraction pattern (XRD) of ZnO nanowire arrays. The observed two peaks can be indexed to (0002) and (0004) crystal planes (JCPDS No. 361451).


Flexible Dye-Sensitized Solar Cell Based on Vertical ZnO Nanowire Arrays
a A SEM image and b XRD pattern of vertically aligned ZnO nanowire array grown on the ZnO seed film.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211473&req=5

Figure 1: a A SEM image and b XRD pattern of vertically aligned ZnO nanowire array grown on the ZnO seed film.
Mentions: Single crystalline wurtzite ZnO film with preferential direction along the c-axis has been reported [23]. The seed film facilitates the epitaxial growth of nanowires along c-axis due to the perfect match of lattice parameters [24]. Figure 1a is a scanning electron microscopy (SEM) image of ZnO nanowire arrays, showing hexagonal cross-section facets grown from the seed substrate. The average length of nanowire is ~15 μm, while the diameter falls in the range of 200–400 nm. Figure 1b shows the X-ray diffraction pattern (XRD) of ZnO nanowire arrays. The observed two peaks can be indexed to (0002) and (0004) crystal planes (JCPDS No. 361451).

View Article: PubMed Central - HTML - PubMed

ABSTRACT

Flexible dye-sensitized solar cells are fabricated using vertically aligned ZnO nanowire arrays that are transferred onto ITO-coated poly(ethylene terephthalate) substrates using a simple peel-off process. The solar cells demonstrate an energy conversion efficiency of 0.44% with good bending tolerance. This technique paves a new route for building large-scale cost-effective flexible photovoltaic and optoelectronic devices.

No MeSH data available.