Journal
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
Volume 248, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.mseb.2019.114404
Keywords
Down-conversion luminescence; Rare earth ions; Solar cells
Funding
- New and Renewable Energy Technology Development Project, Development of Fusion Technology utilizing Sacrificial Anode and Surface Protection Method for the Offshore Wind Power Structure Anti -Corrosion [20153030023600]
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We prepared Tb3+-Yb3+ co-doped silicate glass as a down-conversion layer and used it in solar cells. We confirmed the existence of a down-conversion process in the system by absorption spectroscopy, fluorescence spectroscopy and energy level analysis. Tb3+ ions can absorb high-energy photons and effectively pass the energy to Yb3+ ions. Then Yb3+ ions emit near-infrared photons with energies that match monocrystalline silicon solar cells. As the Yb3+ ion concentration constantly changed, the energy transfer efficiency and the photoelectric conversion efficiency of solar cells both changed. We measured in the standard environment (AM1.5G) and found that Tb3+-Yb3+ co-doped silicate glass samples can improve the photoelectric conversion efficiency of monocrystalline silicon solar cells by 8.6%. Our results show that this material has great potential in the application of solar cells.
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