Nano Archive

Investigation into Photoconductivity in Single CNF/TiO2-Dye Core–Shell Nanowire Devices

Li, Zhuangzhi and Rochford, Caitlin and Javier Baca, F. and Liu, Jianwei and Li, Jun and Wu, Judy (2010) Investigation into Photoconductivity in Single CNF/TiO2-Dye Core–Shell Nanowire Devices. Nanoscale Research Letters, 5 (9). pp. 1480-1486.

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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.

Item Type:Article
Uncontrolled Keywords:Photoconductivity, Nanowire, Titanium dioxide, Dye-sensitized solar cell, Core–shell
Subjects:Physical Science > Photonics
ID Code:9534
Deposited By:SPI
Deposited On:21 Oct 2010 09:20
Last Modified:21 Oct 2010 09:20

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