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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.

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a A photograph showing razor blade peel-off process. Inset: a schematic illustration of ZnO nanowire array embedded in the PDMS matrix. SEM images of b the peeled-off ZnO/PDMS film with good bending ability. c flip-over bottom view of ZnO/PDMS film showing exposed ZnO tails, and d the top view of ZnO/PDMS film transferred onto ITO/PET substrate.
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Figure 2: a A photograph showing razor blade peel-off process. Inset: a schematic illustration of ZnO nanowire array embedded in the PDMS matrix. SEM images of b the peeled-off ZnO/PDMS film with good bending ability. c flip-over bottom view of ZnO/PDMS film showing exposed ZnO tails, and d the top view of ZnO/PDMS film transferred onto ITO/PET substrate.

Mentions: Recently, Plass et al. [25] presented a simple method to peel off oriented Si nanowire arrays from rigid substrate by using a polymer film matrix. Here, a similar peeling-off technique is carried out to transfer vertically aligned ZnO nanowire arrays onto indium tin oxide (ITO)-coated poly(ethylene terephthalate) (PET) flexible substrate. Figure 2a illustrates the removal process of nanowire/PDMS matrix by employing a razor blade. Normally the as-peeled film covers the whole substrate area (~1.5 cm2 in this work). This process yields a large area single crystalline ZnO nanowire array embedded in a transparent, yet mechanically and chemically robust PDMS sheet (as illustrated in the inset schematic of Figure 2a).


Flexible Dye-Sensitized Solar Cell Based on Vertical ZnO Nanowire Arrays
a A photograph showing razor blade peel-off process. Inset: a schematic illustration of ZnO nanowire array embedded in the PDMS matrix. SEM images of b the peeled-off ZnO/PDMS film with good bending ability. c flip-over bottom view of ZnO/PDMS film showing exposed ZnO tails, and d the top view of ZnO/PDMS film transferred onto ITO/PET substrate.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Figure 2: a A photograph showing razor blade peel-off process. Inset: a schematic illustration of ZnO nanowire array embedded in the PDMS matrix. SEM images of b the peeled-off ZnO/PDMS film with good bending ability. c flip-over bottom view of ZnO/PDMS film showing exposed ZnO tails, and d the top view of ZnO/PDMS film transferred onto ITO/PET substrate.
Mentions: Recently, Plass et al. [25] presented a simple method to peel off oriented Si nanowire arrays from rigid substrate by using a polymer film matrix. Here, a similar peeling-off technique is carried out to transfer vertically aligned ZnO nanowire arrays onto indium tin oxide (ITO)-coated poly(ethylene terephthalate) (PET) flexible substrate. Figure 2a illustrates the removal process of nanowire/PDMS matrix by employing a razor blade. Normally the as-peeled film covers the whole substrate area (~1.5 cm2 in this work). This process yields a large area single crystalline ZnO nanowire array embedded in a transparent, yet mechanically and chemically robust PDMS sheet (as illustrated in the inset schematic of Figure 2a).

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.


Related in: MedlinePlus