High Performance MoSe₂/Mo Counter Electrodes Based-Dye-Sensitized Solar Cells
- Authors
- Hussain, Sajjad; Patil, Supriya A.; Vikraman, Dhanasekaran; Liu, Hailiang; Kim, Hak-Sung; Jung, Jongwan
- Issue Date
- Jan-2017
- Publisher
- ELECTROCHEMICAL SOC INC
- Citation
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.164, no.2, pp.E11 - E16
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY
- Volume
- 164
- Number
- 2
- Start Page
- E11
- End Page
- E16
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/21243
- DOI
- 10.1149/2.1291702jes
- ISSN
- 0013-4651
- Abstract
- In the present study, multilayer MoSe₂/Mo nanostructures fabricated by surface selenization of Mo-coated glass substrates using magnetron sputtering, was proposed as a counter electrode (CE) catalyst in dye-sensitized solar cells (DSSCs) to speed up the reduction of triiodide I-3(-) to iodide I-. The extensive cyclic voltammograms (CV) and Tafel curve analysis indicated that the current density of the optimized MoSe₂/Mo CE was higher than Pt CEs due to the fast reduction species. Furthermore, the peak current densities of the MoSe₂/Mo CE showed little degradation after consecutive 100 CV cycles, suggesting high electrochemical stability of the MoSe₂/Mo CE. In addition, MoSe₂/Mo CE exhibited lower charge-transfer resistance than Pt CEs. Finally, the DSSC assembled with the MoSe2/Mo CE showed a high power conversion efficiency of 9.57% under illumination of 100 mW.cm(-2) (DSSC with Pt CE: 9.15%).
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