Design of WSe2/MoS2 Heterostructures as the Counter Electrode to Replace Pt for Dye-Sensitized Solar Cell
- Title
- Design of WSe2/MoS2 Heterostructures as the Counter Electrode to Replace Pt for Dye-Sensitized Solar Cell
- Author
- 정성훈
- Keywords
- Heterostructures; WSe2/MoS2; Surface; Solar cells; DSSCs
- Issue Date
- 2019-08
- Publisher
- AMER CHEMICAL SOC
- Citation
- ACS SUSTAINABLE CHEMISTRY & ENGINEERING, v. 7, no. 15, Page. 13195-13205
- Abstract
- This work reports fabrication of van der Waals interacted WSe2/MoS2 heterostructures on fluorine-doped tin oxide substrates by physicochemical routes. Structural confirmations were performed with Raman scattering and X-ray diffraction, and interfacial structure was investigated using X-ray photoelectron spectroscopy depth profiles. The fabricated WSe2/MoS2 heterostructures were successfully employed as counter electrodes for a dye-sensitized solar cell (DSSC), for the first time. The fabricated WSe2/MoS2 heterostructure counter electrode using assembled DSSC achieved 8.44% maximum power conversion efficiency, comparable to conventional high cost Pt (8.73%). Electrochemical voltammetry, impedance, and Tafel results confirmed the benefits of heterostructure formation to generate interfacial conduction and active facet sharing, thereby improving triiodide reduction catalytic activity. These outcomes open a pathway to fabricate heterostructures as DSSC counter electrodes with effective performance.
- URI
- https://pubs.acs.org/doi/10.1021/acssuschemeng.9b02430https://repository.hanyang.ac.kr/handle/20.500.11754/152274
- ISSN
- 2168-0485
- DOI
- 10.1021/acssuschemeng.9b02430
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ORGANIC AND NANO ENGINEERING(유기나노공학과) > Articles
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