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As an upconverter, lanthanide-doped NaYF4 (Ln-NaYF4) has been integrated into the photoanodes for quantum-dot sensitized solar cells. Compared with the solar cells with pure TiO2, the upconverter based solar cells exhibited a 17.6% increase in the photocurrent and a 20% increase in the power conversion efficiency. Furthermore, when the integrated Ln-NaYF4 is pretreated by annealing, the resulting...
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