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In this paper, a framework for investigating and optimizing Ce3+-Tb3+/Yb3+tripled-doped solar spectral downconverting layer is provided. We investigate broadband solar spectral downconversion in near-infrared (NIR) quantum cutting system of Ce3+-Tb3+/Yb3+triple-doped YBO3employed by modeling and solving rate and power propagation equations of Ce3+-Tb3+/Yb3+. For the optimized Ce3+, Tb3+, and Yb3+concentrations and the thickness of doping layer, total power conversion efficiency of 176% and quantum conversion efficiency of 187% have been theoretically obtained. The total amount of NIR photon output may be increased to meet the purpose of potentially enabling a Si solar cell with a performance improvement. The paper will be also helpful to further investigate and design much more efficient rare-earth-multidoped system of broadband solar spectral conversion for further improving performances of Si solar cells.
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Song et al. (2013) studied this question.
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