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

Li, Zhuangzhi; Rochford, Caitlin; Javier Baca, F.; Liu, Jianwei; Li, Jun; Wu, Judy

doi:10.1007/s11671-010-9665-3

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

Journal Article · Tue Jun 15 00:00:00 EDT 2010 · Nanoscale Research Letters

DOI:https://doi.org/10.1007/s11671-010-9665-3· OSTI ID:1815822

Li, Zhuangzhi ^[1]; Rochford, Caitlin ^[2]; Javier Baca, F. ^[3]; Liu, Jianwei ^[4]; Li, Jun ^[4]; Wu, Judy ^[2]

Hebei Normal Univ., Shijaizhuang (China). Hebei Advanced Thin Film Lab. Dept. of Physics; OSTI
Univ. of Kansas, Lawrence, KS (United States). Dept. of Physics and Astronomy
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Kansas State Univ., Manhattan, KS (United States). Dept. of Chemsitry

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.

View Accepted Manuscript (DOE)

Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: 89233218CNA000001

OSTI ID:: 1815822

Journal Information:: Nanoscale Research Letters, Journal Name: Nanoscale Research Letters Journal Issue: 9 Vol. 5; ISSN 1931-7573

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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Cited By (4)

Characteristics of Boron Decorated TiO₂Nanoparticles for Dye-Sensitized Solar Cell Photoanode Ho, Ching-Yuan; Lin, J. K.; Wang, Hong-Wen International Journal of Photoenergy, Vol. 2015 https://doi.org/10.1155/2015/689702	journal	January 2015
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Electrospinning: designed architectures for energy conversion and storage devices Cavaliere, Sara; Subianto, Surya; Savych, Iuliia Energy & Environmental Science, Vol. 4, Issue 12 https://doi.org/10.1039/c1ee02201f	journal	January 2011
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Related Subjects

14 SOLAR ENERGY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
77 NANOSCIENCE AND NANOTECHNOLOGY
Core–shell
Dye-sensitized solar cell
Nanowire
Photoconductivity
Titanium dioxide