Table 4: Suns- results of the self-aligned emitter contacting scheme for two different cells on the same sample. The values in the temperature column refer to the measured parameters before metallization (“virgin”), the freshly fabricated emitter contacts (“no bake”), and to measurements performed after successive furnace anneals (20 minutes each) in air at the corresponding temperature.

CellTemp (mV) )pFF (%)

virgin no bake425 7261 68.0 1.77

a no bake415 2242 68.5 1.69
b no bake411 16224 68.6 1.68
a150397 1880 68.1 1.64
b150401 6375 69.2 1.57
a200373 3001 62.2 2.07
b200393 n/a 65.6 1.86
a250214 n/a 47.9 2.19
b250297 n/a 50.0 2.76