4. Spectral shift for photovoltaics
4.1 The benefits of spectral shifting
Current solar cells do not optimally absorb the entire solar spectrum. However, a great deal of work has gone into constantly improving the spectral efficiency of solar cells, particularly with thin-film cells made up of different layers. Each semiconductor material absorbs at a defined bandgap energy. The CIGS absorber has a bandgap that depends on the amount of gallium included in the semiconductor. Indeed, the bandgap energy of the CIGS absorber can vary from 1.035 eV to 1.68 eV
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Spectral shift for photovoltaics
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