Figure 4

(a) J-V curves of the devices with two different HTMs under 1 sun illumination (100 mW/cm2). (b) External quantum efficiency of the devices. (c) The distribution of fabricated devices.
(a) J-V curves of the devices with two different HTMs under 1 sun illumination (100 mW/cm2). (b) External quantum efficiency of the devices. (c) The distribution of fabricated devices.