Synthesis of MoS2–MoO2/MWCNTs counter electrode for high-efficient dye-sensitized solar cells
| Autor: | Isara Kotutha, Thana Tansoonton, Wasan Maiaugree, Ekaphan Swatsitang, Attaphol Karaphun |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Auxiliary electrode Materials science Condensed Matter Physics Tin oxide 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Dielectric spectroscopy Field emission microscopy Dye-sensitized solar cell symbols.namesake Chemical engineering Transmission electron microscopy 0103 physical sciences symbols Electrical and Electronic Engineering Cyclic voltammetry Raman spectroscopy |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 30:20778-20788 |
| ISSN: | 1573-482X 0957-4522 |
| Popis: | In this work, MoS2–MoO2 and MoS2–MoO2/MWCNTs counter electrodes (CEs) for dye-sensitized solar cells (DSSCs) were prepared by sulfurization of a one-pot hydrothermally obtained MoO2 film and MoO2/MWCNTs composite film on fluorine-doped tin oxide glasses at 500 °C for 2 h in argon atmosphere. The promoted MoS2 particles on a surface of MoS2–MoO2 and MoS2–MoO2/MWCNTs films were identified by X-ray diffraction to have a hexagonal structure. Morphology of MoO2, MoO2/MWCNTs, MoS2–MoO2, and MoS2–MoO2/MWCNTs CEs was studied using field emission scanning electron microscope and transmission electron microscope. Functional groups in MoS2–MoO2/MWCNTs sample were identified by Raman spectroscopy. Results of cyclic voltammetry and electrochemical impedance spectroscopy displayed a high electrocatalytic activity performance and low charge transfer resistance of MoS2–MoO2/MWCNTs CE as compared to those of MoO2, MoO2/MWCNTs, and MoS2–MoO2 CEs. Interestingly, the DSSC based on MoS2–MoO2/MWCNTs CE could provide the higher power conversion efficiency of 7.79% compared to that of 7.26% for Pt-based DSSC. |
| Databáze: | OpenAIRE |
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