Fig. 3
a EQE performance for a black silicon photodiode (red) measured in photovoltaic mode and the commercial CCD imaging sensor (blue) [17]. b IQE and c R measurements for planar silicon-based solar cells and black silicon solar cells. d The current-voltage curves of the conventional solar cell and black silicon solar cell made from the SiNW arrays [23]. e Current-voltage performances for varied potential differences. Here the spacing of anode-cathode is 20 μm [36]. f Emissivity versus wavelength given different blackbody source temperatures [37]