Figure 5: Charge transport and CE of IDTBR:P3HT blends.
From: High-efficiency and air-stable P3HT-based polymer solar cells with a new non-fullerene acceptor
(a) Photo-CELIV of the O-IDTBR:P3HT and the EH-IDTBR:P3HT solar cells at 1 μs delay times; tmax (the time when the extraction current reaches its maximum value) for O-IDTBR:P3HT and EH-IDTBR:P3HT is 4.7 and 4.3 μs, respectively; (b) average charge densities measured in O-IDTBR:P3HT and EH-IDTBR:P3HT devices operating at open circuit as a function of Voc determined by CE for different bias light intensities. The grey area marks the data points corresponding ∼1 sun light intensity, and dashed lines correspond to the approximate device Voc values (upper line for EH-IDTBR, lower line for O-IDTBR) at 1 sun.
