364638.fig.006a
(a)
364638.fig.006b
(b)
364638.fig.006c
(c)
364638.fig.006d
(d)
Figure 6: The performance of a-Si1−xGex:H single-junction cells as a function of the i/n grading width under illumination of AM1.5G light source. The p/i grading width and the total thickness of absorber were 15 and 230 nm, respectively, for all the cells. The lines were drawn to guide the eye.