High performance dye-sensitized solar cell based on hydrothermally deposited multiwall carbon nanotube counter electrode.
- Resource Type
- Article
- Authors
- Siriroj, Sumeth; Pimanpang, Samuk; Towannang, Madsakorn; Maiaugree, Wasan; Phumying, Santi; Jarernboon, Wirat; Amornkitbamrung, Vittaya
- Source
- Applied Physics Letters. 6/11/2012, Vol. 100 Issue 24, p243303. 4p. 1 Color Photograph, 1 Chart, 2 Graphs.
- Subject
- *SOLAR cells
*CARBON nanotubes
*HYDROTHERMAL deposits
*ELECTRODES
*IMPEDANCE spectroscopy
- Language
- ISSN
- 0003-6951
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 1500 Ω to 30 Ω as observed by electrochemical impedance spectroscopy. [ABSTRACT FROM AUTHOR]