Figure 5

High order mixed dimensional and 3D PSCs. (a) Short circuit current density (Jsc)−open circuit voltage (Voc) characteristics of the champion devices for n = ∞, 60, 40, (b) cross-section SEM image of dimensionally controlled n = 60 PSC, (c) corresponding IPCE spectra and (d) thermal stability test of encapsulated devices at 85 °C for 360 hrs.