A novel parallel configuration of dye-sensitized solar cells with double-sided anodic nanotube arrays

In dye-sensitized solar cells based on anodic titania nanotube arrays, the low photocurrent in the backside-illuminated configuration has hindered their development. To increase the energy absorption and thus promote the photocurrent, a novel parallel configuration of dye-sensitized solar cells is p...

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Bibliographic Details
Published in:Energy & environmental science 2011-01, Vol.4 (6), p.2240-2248
Main Authors: Sun, Lidong, Zhang, Sam, Wang, Xiu, Sun, Xiao Wei, Ong, Duen Yang, Ko Kyaw, Aung Ko
Format: Article
Language:English
Subjects:
Anodic
Nanocomposites
Nanomaterials
Nanostructure
Photocurrent
Photoelectric effect
Solar cells
Titanium dioxide
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Summary:In dye-sensitized solar cells based on anodic titania nanotube arrays, the low photocurrent in the backside-illuminated configuration has hindered their development. To increase the energy absorption and thus promote the photocurrent, a novel parallel configuration of dye-sensitized solar cells is proposed and achieved in this work on the basis of double-sided anodic nanotubes. The parallel connection is verified by electrochemical impedance spectroscopy measurements. The parallel cells exhibit an average 70% increment in photocurrent and 30% enhancement in efficiency as compared to the single cells, due to significantly increased surface area and highly reduced series resistance. Theoretical calculation and experimental fitting results demonstrate that a tube length of [similar]30 [small mu ]m is optimal for the nanotubes used in this study with backside-illuminated architecture.
ISSN:1754-5692
1754-5706
DOI:10.1039/C1EE01196K