Accession Number:

ADA595997

Title:

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

Descriptive Note:

Journal article

Corporate Author:

KANSAS UNIV LAWRENCE DEPT OF PHYSICS AND ASTRONOMY

Report Date:

2010-01-01

Pagination or Media Count:

10.0

Abstract:

A vertically aligned carbon nanofiber array coated with anatase TiO2 CNFTiO2 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 CNFTiO2 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.

Subject Categories:

  • Electrical and Electronic Equipment
  • Electrooptical and Optoelectronic Devices

Distribution Statement:

APPROVED FOR PUBLIC RELEASE