A novel UV-mediated low-temperature sintering of TiO2 for dye-sensitized solar cells

Titania pastes were fired at 450 deg C in oxygen to give white titania that was used to prepare dye-sensitized solar cells (DSSC). Titania fired at lower temperature and/or under inert atmosphere have brown stripes and cells made from these stripes had no measurable efficiency. When the titania past...

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Bibliographic Details
Published in:Solar energy materials and solar cells 2006-05, Vol.90 (7-8), p.1041-1051
Main Authors: LEWIS, Larry N, SPIVACK, James L, GASAWAY, Shellie, WILLIAMS, Eric D, GUI, John Y, MANIVANNAN, Venkatesan, SICLOVAN, Oltea P
Format: Article
Language:English
Subjects:
Applied sciences
Energy
Exact sciences and technology
Natural energy
Photovoltaic conversion
Solar cells. Photoelectrochemical cells
Solar energy
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Summary:Titania pastes were fired at 450 deg C in oxygen to give white titania that was used to prepare dye-sensitized solar cells (DSSC). Titania fired at lower temperature and/or under inert atmosphere have brown stripes and cells made from these stripes had no measurable efficiency. When the titania paste was screen printed and then heated and simultaneously irradiated with UV light, white stripes were obtained. Improved efficiency was noted for PV cells made from pastes heated at lower temperature under irradiation vs. cells made from low-temperature heated paste but without irradiation. UV irradiation appears to facilitate clean oxidation of residual organic materials in the titania precursor pastes. The best cells in our study made with our titania paste treated at 450 deg C in oxygen had the following characteristics: efficiency=3.45%; Voc=630mV; Jsc=8.5mA/cm2; and a fill factor=0.64.
ISSN:0927-0248
1879-3398
DOI:10.1016/j.solmat.2005.05.019