Facile and cost-effective methodology to fabricate MoS₂ counter electrode for efficient dye-sensitized solar cells
- Authors
- Vikraman, Dhanasekaran; Patil, Supriya A.; Hussain, Sajjad; Mengal, Naveed; Kim, Hyun-Seok; Jeong, Sung Hoon; Jung, Jongwan; Kim, Hak-Sung; Park, Hui Joon
- Issue Date
- Apr-2018
- Publisher
- ELSEVIER SCI LTD
- Keywords
- DSSC; Electrocatalytic; MoS₂; CBD
- Citation
- DYES AND PIGMENTS, v.151, pp.7 - 14
- Indexed
- SCIE
SCOPUS
- Journal Title
- DYES AND PIGMENTS
- Volume
- 151
- Start Page
- 7
- End Page
- 14
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/17684
- DOI
- 10.1016/j.dyepig.2017.12.037
- ISSN
- 0143-7208
- Abstract
- Interests in the development of economical and high-efficiency counter electrodes (CEs) of dye-sensitized solar cell (DSSC) to replace the excessively cost and scarce platinum (Pt) CEs have been increased. In this report, we demonstrate a facile chemical bath deposition (CBD) route to prepare layered MoS₂/fluorine-doped tin oxide (FTO) films that directly act as the CEs of DSSCs. A DSSC containing the CBD-synthesized MoS₂/FTO CE (prepared at 0.03 M Mo source concentration, 90 degrees C bath temperature and 30 min deposition time) exhibits high power conversion efficiency (PCE) of 7.14%, which is approaching that of DSSC with Pt/FTO CE (8.73%). The electrocatalytic activity of the MoS₂/FTO and Pt/FTO CEs are discussed in detail with their cyclic voltammetry (CV), Tafel polarization curves, and electrochemical impedance spectra (EIS). The observed results indicate that our low-cost CE has a high electrocatalytic activity for the reduction of triiodide to iodide and a low charge transfer resistance at the electrolyte-electrode interface with a comparable state to that of a Pt/FTO CE.
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