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. 2016 Dec 16;6:39163. doi: 10.1038/srep39163

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(a) External quantum efficiency (EQE) spectra of the InGaP/InGaAs/Ge triple-junction solar cell with (solid line) and without (dashed line) the introduction of GQDs with a concentration of 1.2 mg/ml. (b) EQE enhancement ratio of the InGaP/InGaAs/Ge triple-junction solar cell after the introduction of GQDs.