Enhanced performance of sodium doped TiO2 nanorods based dye sensitized solar cells sensitized with extract from petals of Hibiscus sabdariffa (Roselle)
| Autor: | S. Prasanna, M.D. Kannan, S. Shalini, K. Sivakumaran, R. Balasundaraprabhu, T. K. Satish Kumar, N. Muthukumarasamy |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Scanning electron microscope Mechanical Engineering Sodium Hibiscus sabdariffa Doping chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Field electron emission Dye-sensitized solar cell chemistry.chemical_compound chemistry Mechanics of Materials 0103 physical sciences Titanium dioxide General Materials Science Nanorod 0210 nano-technology Nuclear chemistry |
| Zdroj: | Materials Letters. 221:192-195 |
| ISSN: | 0167-577X |
| Popis: | Sodium (Na) doped titanium dioxide (TiO2) nanorods were successfully synthesized by one-step hydrothermal method. The effect of sodium doping in improving the performance of dye sensitized solar cells (DSSC) has been discussed. Field Emission scanning electron micrograph (FESEM) revealed the formation of nanorods and nanoflowers for doped samples. X-ray diffraction (XRD) pattern of doped samples reveal slight shift towards lower angle confirming the effective substitution of Ti4+ by Na+. The photoelectric conversion efficiency of 6% sodium doped TiO2 based DSSC was 1.65% and is 79% higher than the undoped TiO2 based DSSC that exhibited an efficiency of 0.92%. This improvement in efficiency is ascribed due to less electron-hole recombination rate. |
| Databáze: | OpenAIRE |
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