4.4. Uncorrected IeV characteristics obtained from the five arrays
at non STC
Comparison in made on solar cell IeV curves using four singlecolor
simulators, one three-color simulator and a Class AAA solar
simulator (PASAN Sun Simulator IIIc), and plotted in Fig. 8. LED
voltages and current are varied to provide irradiance in the range of
400e1000 Wm2, whenever possible. Out of the 5 LED simulators,
only the red and blue LED simulators provide an irradiance of
1000 Wm2. In addition, all 5 LED simulators have light spectra
different from AM 1.5 whereas the Class AAA simulator has.
At a comparable irradiance level of 1000 Wm2, Fig. 8(a), IeV
curves of the red LED simulator (at 925 and 1000 Wm2) and the
blue LED simulator (at 1000 Wm2) show slight deviations from
the IeV curve of the Class AAA simulator. Larger deviations are
observed at lower irradiance levels, 800 Wm2 in Fig. 8(b) and
400 Wm2 in Fig. 8(c)