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Investigation into Photoconductivity in Single CNF/TiO2-Dye Core–Shell Nanowire Devices
Li, Zhuangzhi Rochford, Caitlin Baca, Francisco Javier A.
Li, Zhuangzhi
Rochford, Caitlin
Baca, Francisco Javier A.
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Abstract
A vertically aligned carbon nanofiber array coated with anatase TiO2 (CNF/TiO2) is an attractive possible replacement for the sintered TiO2 nanoparticle network in the original dye-sensitized solar cell (DSSC) design due to the potential for improved charge transport and reduced charge recombination. Although the reported efficiency of 1.1% in these modified DSSC’s is encouraging, the limiting factors must be identified before a higher efficiency can be obtained. This work employs a single nanowire approach to investigate the charge transport in individual CNF/TiO2 core–shell nanowires with adsorbed N719 dye molecules in dark and under illumination. The results shed light on the role of charge traps and dye adsorption on the (photo) conductivity of nanocrystalline TiO2 CNF’s as related to dye-sensitized solar cell performance.
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Date
2010-06-15
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Springer
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Li_2010.pdf
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Keywords
Photoconductivity, Nanowire, Titanium dioxide, Dye-sensitized solar cell, Core-shell
Citation
Li, Zhuangzhi; Caitlin Rochford, F. Javier Baca, Jianwei Liu, Jun Li and Judy Wu. "Investigation into Photoconductivity in Single CNF/TiO2-Dye Core–Shell Nanowire Devices." Nanoscale Research Letters 2010, 5:1480-1486. http://dx.doi.org/10.1007/s11671-010-9665-3