Development of photo-anodes based on strontium doped zinc oxide-reduced graphene oxide nanocomposites for improving performance of dye-sensitized solar cells
| Autor: | Saeid Kakooei, Davoud Pourzadeh, Rojan Savari, Jalal Rouhi, Omid Fakhar, Saeid Shojaei, Okhtay Jahanbakhsh |
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| Rok vydání: | 2021 |
| Předmět: |
Photocurrent
Materials science Nanocomposite Graphene Process Chemistry and Technology Doping Oxide Nanoparticle Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Dye-sensitized solar cell chemistry.chemical_compound Chemical engineering chemistry X-ray photoelectron spectroscopy law Materials Chemistry Ceramics and Composites |
| Zdroj: | Ceramics International. 47:31927-31939 |
| ISSN: | 0272-8842 |
| Popis: | The goal of this study was to create highly efficient dye-sensitized solar cells (DSSCs) using strontium doped zinc oxide-reduced graphene oxide (Sr-doped ZnO/rGO) nanocomposites. As photo-anodes of DSSCs, ZnO, ZnO/rGO (with weight percent rGO in composites: 0, 0.01, 0.1, 0.5, and 1 wt%) and Sr-doped ZnO/rGO (with Zn1-xSrxO nanoparticle stoichiometry: x = 0, 0.02, 0.04, 0.06 and 0.08) nanocomposites were designed and characterized. AFM, FESEM, XRD, EDS, XPS, PL, and FTIR analyses were used to investigate the morphology and structure properties of prepared nanocomposites. UV–vis spectroscopy and photo-electrochemical measurements were used to investigate the efficiency of prepared photo-anodes. The efficiency (η) and short-circuit photocurrent density (JSC) of DSSCs based on Zn0.92Sr0.08O/rGO nanocomposite were 7.98 % and 18.4 mA cm−2, respectively. The results showed that doping Sr on ZnO/rGO nanocomposites resulted in a wide bandgap energy and increased the values of η, JSC, IPCE, and photo-anode electron transportability. These findings suggest that Sr-doped ZnO/rGO nanocomposites can provide a novel approach for increasing photo-electrochemical activity in ZnO-based DSSCs. |
| Databáze: | OpenAIRE |
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