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Figure 7 | Nanoscale Research Letters

Figure 7

From: 3-D solar cells by electrochemical-deposited Se layer as extremely-thin absorber and hole conducting layer on nanocrystalline TiO2 electrode

Figure 7

Photocurrent density-voltage curves and variation of the conversion efficiency of 3-D selenium ETA solar cells. Photocurrent density-voltage curves (a) and the variation of conversion efficiency (b) of 3-D selenium ETA solar cells with different HCl concentrations. The annotation numbers in Figure 7a suggest the HCl concentrations for Se deposition.

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