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.

Nguyen et al. Nanoscale Research Letters 2013 8:8   doi:10.1186/1556-276X-8-8
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