Figure 3

(a) shows the photovoltaic parameters of the devices based on different sputtering time. 12 solar cells were repeated and measured for each sputtering time. (b) IPCE spectra of perovskite solar cells based on three typical sputtering time.

(a) shows the photovoltaic parameters of the devices based on different sputtering time. 12 solar cells were repeated and measured for each sputtering time. (b) IPCE spectra of perovskite solar cells based on three typical sputtering time.