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High performance dye-sensitized solar cell based on hydrothermally deposited multiwall carbon nanotube counter electrode
Author(s)
Siriroj, Sumeth
Pimanpang, Samuk
Towannang, Madsakorn
Maiaugree, Wasan
Phumying, Santi
Jarernboon, Wirat
Amornkitbamrung, Vittaya
Date Issued
June 11, 2012
Type
Article
Abstract
Conductive glass was coated with multiwall carbon nanotubes (MWCNTs) by a hydrothermal method. MWCNTs films were subsequently used as dye-sensitized solar cell (DSSC) counter electrodes. The performance of hydrothermal MWCNT DSSC was ∼2.37%. After film annealing in an Ar atmosphere, annealed-hydrothermal MWCNT (AHT-CNT) DSSC efficiency was significantly increased to ∼7.66%, in comparison to ∼8.01% for sputtered-Pt DSSC. Improvement of AHT-CNT DSSC performance is attributed to a decrease in charge-transfer resistance from 1500Ω to 30Ω as observed by electrochemical impedance spectroscopy. © 2012 American Institute of Physics.
Citation
Applied Physics Letters, 100(24), 2012