Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 93, Issue 8, Pages 1448-1451Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.solmat.2009.03.002
Keywords
Dye-sensitized solar cell; Electrode geometry; Series resistance; Efficiency
Funding
- Ministry of Education, Science and Technology of Korea
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Effect of electrode geometry on the photovoltaic performance of dye-sensitized solar cell (DSSC) has been investigated to optimize the device geometry for reliable energy conversion efficiency assessment. Mesoporous TiO(2) layers with an identical active area (0.40 cm(2)) and different dimension are prepared on Fro glass substrate by the screen printing method and used as photoanodes for DSSCs. Under I sun illumination (AM 1.5G, 100 mW cm(-2)), both the open-circuit voltage and the short-circuit current density are independent of electrode geometry whereas the fill factor and hence energy conversion efficiency show strong dependency. Electrochemical impedance spectroscopy analysis indicates that the distance between active layer and ohmic contact directly contributes to internal series resistance and influence photovoltaic performance. (C) 2009 Elsevier B.V. All rights reserved.
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