| Autor: |
Dong Kyun, Yim, In-Sun, Cho, Sangwook, Lee, Chae Hyun, Kwak, Dong Hoe, Kim, Jung-Kun, Lee, Kug Sun, Hong |
| Rok vydání: |
2012 |
| Zdroj: |
Journal of nanoscience and nanotechnology. 11(10) |
| ISSN: |
1533-4880 |
| Popis: |
Nanophosphors based on green emitting terbium doped yttrium silicates with the general formula Y2SiO5:Tb3+ with a size of 30-60 nm were synthesized by the hydrothermal method. The prepared nanophosphors were characterized by X-ray diffraction, field-emission scanning electron microscopy, transmission electron microscopy, UV-Vis diffuse reflectance spectroscopy and fluorescence spectroscopy. It was found that the nanophosphors crystallize in an X1-type monoclinic structure (P2(1)/c) and absorb UV light from 220 to 300 nm which they then down-convert into visible-light (strong green emission at around 545 nm (5D4--7F(J. As TiO2-based dye-sensitized solar cells exhibit their maximum incident photon to current efficiency at around 500-600 nm, the wavelength-modulation characteristics of the nanophosphors can be efficient for dye-sensitized solar cell systems. Therefore, the Y2SiO5:Tb3+ nanophosphors were introduced into a TiO2-based dye-sensitized solar cell and their effects on the performance of the solar cell were investigated. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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