Analysis of carrier transport in dye sensitized solar cells using temperature dependent dark I–V measurements

Author

Shanmugam, Mariyappan ; Bills, Braden ; Baroughi, Mhadi Farrokh ; Galipeau, David

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., South Dakota State Univ., Brookings, SD, USA

fYear

2009

fDate

7-12 June 2009

Abstract

This paper presents carrier transport in dye sensitized solar cell (DSSC) using dark current-voltage-temperature (I-V-T) measurements. Dark I-V measurements were performed in 30Â°C to 85Â°C range and the dark saturation current of the DSSC was extracted. The measurements revealed that the activation energy of the dark current lies in 1.18-1.27 eV range. This suggests that the charge injection from TiO₂ into liquid electrolyte is dominated by electron capture process from TiO₂ conduction band into the surface states with energy levels close to the electrolytes redox potential.

Keywords

charge injection; conduction bands; dark conductivity; dyes; electrolytes; electron capture; liquids; oxidation; reduction (chemical); solar cells; surface states; titanium compounds; TiO₂; activation energy; carrier transport; charge injection; conduction band; dark current-voltage-temperature measurements; dark l-V measurements; dark saturation current; dye sensitized solar cell; electron capture; energy levels; liquid electrolyte; redox potential; surface states; temperature 30 degC to 85 degC; Current measurement; Dark current; Decision support systems; Energy measurement; Energy states; Performance evaluation; Photovoltaic cells; Radioactive decay; Temperature dependence; Temperature sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Specialists Conference (PVSC), 2009 34th IEEE

Conference_Location

Philadelphia, PA

ISSN

0160-8371

Print_ISBN

978-1-4244-2949-3

Electronic_ISBN

0160-8371

Type

conf

DOI

10.1109/PVSC.2009.5411512

Filename

5411512