Accession Number:

ADA595965

Title:

The Effect of Annealing on the Photoconductivity of Carbon Nanofiber/TiO2 Core-Shell Nanowires for Use in Dye-Sensitized Solar Cells

Descriptive Note:

Journal article

Corporate Author:

KANSAS UNIV LAWRENCE DEPT OF PHYSICS AND ASTRONOMY

Report Date:

2010-07-26

Pagination or Media Count:

6.0

Abstract:

Electrical transport properties and photoresponse of individual TiO2-coated carbon nanofibers were studied in an attempt to elucidate the limiting factors of core-shell nanowire-based dye-sensitized solar cells DSSC. The role of the semiconductor shell microstructure was investigated by comparing as grown and thermally annealed samples. Steady state I-V and transient photoconductivity measurements suggest that improving the microstructure leads to reduced resistivity and contact resistance, a decrease in charge traps, improved surface stoichiometry for dye adsorption, and reduced absorption of visible light by the semiconductor, all of which may improve nanowire-based DSSC performance.

Subject Categories:

  • Electrical and Electronic Equipment
  • Electric Power Production and Distribution
  • Refractory Fibers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE