Fig. 7
From: High Weight-Specific Power Density of Thin-Film Amorphous Silicon Solar Cells on Graphene Papers
a A photograph of the a-Si:H solar cells on the GP-3A. b A J-V curves of a-Si:H devices based on the GP-3A substrate after encapsulation. c J-V curves of a device on GP-3A substrate under different bending angles. d Relative efficiency as a function of bending cycles. The insets in c and d represent an illustration of defining bending angle and a bended device mounted on the measurement setup, respectively