Optimization of the TiO2-Surface Modification Temperature for Performance Enhancement of Dye-Sensitized Solar Cells

Title
Optimization of the TiO2-Surface Modification Temperature for Performance Enhancement of Dye-Sensitized Solar Cells
Author(s)
Su Kyung Park[Su Kyung Park]Jae Young Bae[Jae Young Bae]김재홍안광순이도경[이도경]한윤수[한윤수]
Keywords
TIO2 ELECTRODES; NANOPOROUS ELECTRODES; PHOTOVOLTAIC CELLS; ENERGY-CONVERSION; EFFICIENCY; IMPROVEMENT
Issue Date
201408
Publisher
AMER SCIENTIFIC PUBLISHERS
Citation
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.14, no.8, pp.5828 - 5832
Abstract
A nanoporous TiO2 electrode was modified with magnesium salts (MSs), MgCO3 and Mg(CH3COO)(2), by simple dip coating process at varied temperatures, and then applied to dye-sensitized solar cells (DSSCs). When the surface treatment was conducted at 40 degrees C, the DSSC with MS-modified TiO2 layer showed an increase in short circuit current (J(sc)) and open circuit voltage (V-oc), resulting in a power conversion efficiency of 8.52%, compared to that (7.02%) of reference device with bare TiO2. The improved J(sc) value was attributed to the increased dye adsorption. Electrochemical impedance spectroscopy and dark current-voltage studies revealed that the V-oc enhancement was caused by the suppression of charge recombination between injected electrons and I-3(-) ions.
URI
http://hdl.handle.net/YU.REPOSITORY/31323http://dx.doi.org/10.1166/jnn.2014.8444
ISSN
1533-4880
Appears in Collections:
공과대학 > 화학공학부 > Articles
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