Determination of Series Resistance in CdSeTe/CdTe Solar Cells by the Jsc–Voc Method

While commonly used in Si solar cell characterization, the Suns-V
_oc
method of determining series resistance (R
_s
) is rarely used for CdTe and its alloys. However, it is advantageous relative to the slope method-commonly used in the CdTe community-because it measures series resistance at the maximum power point, at which a solar cell operates. Using the self-consistent predecessor to Suns-V
_oc
, J
_sc
-V
_oc
, we determine R
_s
of two different CdSeTe/CdTe solar cell structures to be 0.96 and 2.72 μcm
²
, with repeated measurements showing little deviation.