Figure 3. Extended absorption of visible light and near-infrared light. (IMAGE)

Science China Press

Figure 3. Extended absorption of visible light and near-infrared light.

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a) Transient photocurrent responses in the visible light range; b) Upconversion photoluminescence spectra of NYF and NYF-35@DCN; c) Transient photocurrent responses in near-infrared light.

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