A value of A higher than 2
and a relatively high Jo indicate that tunneling and
interface recombination are participating in the electron
and hole transport processes across the p-n junction
[30]. In the dark, the shunt conductance is close to the
lower end of the shunt conductance values reported
in the literature for planar CdS-CdTe solar cells [31].
This suggests that the interface structure is not a
significant contributor to the shunting effect.