Fig. 25. (a–d). JSC, VOC, FF, and PCE, dependent on the CH3NH3I concentration. Error bars in each box denote minimum and maximum values and the middle line in the box signifies the median value. Filled squares in the box denote mean values. (e) Light-capturing efficiency spectra of the CH3NH3PbI3 layers laying on CH3NH3I concentration. (f) Photo-CELIV transients noted for the cells containing FTO/bl-Al2O3/mp-TiO2/MAPbI3/Spiro-MeOTAD/Au, subject to CH3NH3I concentration (reproduced with permission from ref. 200. Copyright 2014 NPG).
