Fig. 5 | Nature Communications

Fig. 5

From: Correct determination of charge transfer state energy from luminescence spectra in organic solar cells

Fig. 5

Electroluminescence spectra for PV2000:PC61BM and PBDB-T:ITIC solar cells. EL spectra IEL(λ) of PV2000:PC61BM solar cells (a) and PBDB-T:ITIC solar cells (b) for different thicknesses dPAL of the photoactive layer in an ITO-based design (type D in Fig. 1), the calculated radiant out-coupling factors \(\bar \gamma _{{\mathrm{OC}}}\) for the corresponding layer stacks and the spectra corrected for out-coupling

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