Measurements

7.1.1.1 Efficiency comparison

We analyzed seven monocrystalline silicon solar cells which suffer from locally high series resistances. We carried out light-IV, Jsc-Voc, and PL-Rs measurements and compared the solar cell efficiency which follows
directly from the light – IV characteristics to the efficiency which follows from LIA (using the measured series resistance image). The local and global parameters needed for LIA are determined as explained in the previous section.

image404The result of this comparison is shown in Fig. 5.30. For the investigated solar cells, the values obtained with the LIA approach deviate from the mea­sured efficiencies by less than 1.6%rel.

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