Figure 2 | Scientific Reports

Figure 2

From: Highly efficient spin-conversion effect leading to energy up-converted electroluminescence in singlet fission photovoltaics

Figure 2

(a) Light and dark J-V characteristics of rubrene-C60 heterojunction solar cells. (b) Evolution of photocurrent spectra over the working range of a SF-PV device. The negative component to photocurrent just below the VOC is proposed to occur via TTA in rubrene. (c) Comparison of EQE measured at VOC with absorption spectrum of thin film of C60. The part positive EQE spectrum matches perfectly with the non-overlapping light absorption region of C60. (d) L-V characteristics of rubrene-C60 showing electroluminescence just above VOC. Here TTA leads to photon emission from the rubrene singlet at a driving voltages <1 V.

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