Brahim Ait Ali, Reda Moubah, Abdelkader Boulezhar, Hassan Lassri. Temperature-dependent barrier height inhomogeneities in PTB7:PC71BM-based organic solar cells[J]. Chinese Physics B, 2020, 29(9):
- Chinese Physics B
- Vol. 29, Issue 9, (2020)
Fig. 1. (a) Chemical structures of components in active layer and (b) device structure.
Fig. 2. (a) log(J )–V (voltage) of PTB7:PC71BM-based device in the dark, and (b) the J –V characteristics under illumination in temperature range of 110 K–325 K.
Fig. 3. Plot of n and J sversus temperature (extracted from J –V curves in the dark) of the investigated device at various temperatures.
Fig. 4. Variations of (a) V OC and J SC, (b) PCE ( %) and fill factor (FF) with temperature of the investigated device.
Fig. 5. Barrier height versus T of the investigated device.
Fig. 6. The plots of ln (J s/T 2) as a function of 1/T [panel (a)] and 1/nT [panel (b)].
Fig. 7. Barrier height versus 1/2kT of the investigated device.
Fig. 8. ln ( J s / T 2 ) − σ s 2 / ( 2 k 2 T 2 ) versus 1/kT of the investigated device.
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Table 1. The 9 ).
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