CuS/WS2 and CuS/MoS2 heterostructures for high performance counter electrodes in dye-sensitized solar cells
- Title
- CuS/WS2 and CuS/MoS2 heterostructures for high performance counter electrodes in dye-sensitized solar cells
- Author
- Supriya A. Patil
- Keywords
- TMD; Heterostructure; Sputtering; CEs; DSSC
- Issue Date
- 2018-01
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Citation
- SOLAR ENERGY, v. 171, page. 122-129
- Abstract
- In this work, we demonstrated CuS/WS2 and CuS/MoS2 heterostructures via a sputtering-CVD process for dye sensitized solar cells (DSSCs) as a counter electrode (CE) to replace the currently preferred expensive platinum (Pt). The cyclic voltammetry, electrochemical impedance spectroscopy, and Tafel curve studies revealed that the unique CuS/WS2 and CuS/MoS2 heterostructures were beneficial in achieving high electrocatalytic activity, low charge-transfer resistance at the CE/electrolyte interface, and fast reaction kinetics for the reduction of triiodide to iodide at the CE. The constructed DSSCs using these CuS/WS2 and CuS/MoS2 CEs exhibited high-power conversion efficiencies (PCEs) of 8.21% and 7.12%, respectively, which are comparable to conventional Pt CE (8.74%) and pristine WS2, MoS2, and CuS CEs (6.0%, 6.3% and 6.4%). This novel sulfur based heterostructure opens up opportunities for a variety of optoelectronic and photoelectrochemical applications.
- URI
- https://www.sciencedirect.com/science/article/pii/S0038092X18305073?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/117110
- ISSN
- 0038-092X
- DOI
- 10.1016/j.solener.2018.05.074
- Appears in Collections:
- RESEARCH INSTITUTE[S](부설연구소) > ETC
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