Abstract
A near-infrared emitting phosphor, Li2SrSiO4:Ce 3+, Er3+, is developed as a potential solar spectral convertor for Ge solar cells. Structure and UV-Vis-NIR optical properties of Li2SrSiO4:Ce3+, Er3+ are investigated using the Rietveld refinement of X-ray diffraction (XRD), diffuse reflection spectrum, photoluminescence excitation and emission spectra at room temperature. These results show that Li2SrSiO4:Ce 3+, Er3+ phosphor has intense absorption broadbands dominating at 360 nm which can efficiently facilite the UV part of the solar spectral when compared to Li2SrSiO4:Er3+. Furthermore, it can give an intense emission around 1530 nm via efficient energy transfer process from Ce3+ to Er3+, matching well with the optimal spectral response of Ge solar cells.
Original language | English |
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Pages (from-to) | 1871-1873 |
Number of pages | 3 |
Journal | Optical Materials |
Volume | 36 |
Issue number | 11 |
DOIs | |
Publication status | Published - Jan 1 2014 |
Externally published | Yes |
Keywords
- Ge solar cells
- Near infrared emission
- Rare earth
- Solar spectral convertor
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- General Computer Science
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering