The AM 1.5 G Reference Spectrum

000 nm to infinity. These changes have a negligible impact on any results. Either standard is acceptable for use to combine with measured IPCE values to estimate efficiency under AM 1.5 G. 

Commercial solar simulators are available that typically use arc sources and filters to mimic the AM 1.5 G spectrum, although usually they do not replicate it exactly. Consequently, some portions of the spectral output (especially particular emission lines from a particular source) have greater intensity, and some regions have lower intensity, as shown in Fig. 3.12. 

Different classes of solar simulators are available the classification is dependent on the spectral mismatch of the true AM 1.5 G spectrum. These devices are 

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Spectral Mismatch Factors Calculated with Respect to the AM 1.5 G Reference Spectrum for Various Test Cell/Reference Cell Combinations... 

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