2020同步年報

014 ACTIVITY REPORT 2020 Fig. 2 : Time-resolved analysis of a GIWAXS profile during the first step. (a,b) False-color intensity maps versus wavenumber q and frame numbers for PbI 2 without Cs + during spinning (a) and annealing (b). (c) Corresponding temporal evolutions of peak areas of the PbI 2 -DMF-DMSO intermediate phase and the PbI 2 phase. (d,e) False-color intensity maps for a film with Cs + (5%) during spinning (d) and annealing (e); (f) corresponding tempo- ral evolutions of the peak areas of PbI 2 and δ-CsPbI 3 phases. [Reproduced from Ref. 7] Fig. 3 : Analysis of formation of a perovskite film during the second step. (a–c) The GIWAXS intensity profiles for perovskites without doping (a), with Cs + (5%) (b), and with Cs + and GA + (c), respectively. (d–f) Corresponding false-color intensity maps versus q and frame numbers; (g–i) temporal evolu- tions of peak areas of intermediate, PbI 2 , δ -CsPbI 3 and perovskite phases. [Reproduced from Ref. 7]