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2006 IEEE 4th World Conference on Photovoltaic Energy Conference
Many commercially-produced photovoltaic (PV) modules exhibit poor external quantum efficiency (EQE) at short wavelengths (λ). However, the addition of a luminescent down-shifting (LDS) layer can absorb these short λ photons that would not have contributed towards electron-hole pair generation in the solar cell, and re-emit them at longer λ where the PV device possesses a much higher IQE. The LDS is performed via a mixture of up to four fluorescent organic dyes, which are cheap, photostable, anddoi:10.1109/wcpec.2006.279420 fatcat:un47nzkombe53gdwsbhbmj5wzy