Figure 14.
The UV-VIS spectra of perovskites with varying DMSO concentrations exhibiting bandgaps of (a) 1.67 eV and (b) 1.77 eV. The J-V characteristics for the devices, representing perovskites with bandgaps measuring (c) 1.67 eV and (d) 1.77 eV, each incorporates a 25% concentration of DMSO. (e) Schematic illustration elucidates the mechanism underlying strain formation in the perovskite structure. (f) Damping stability assessment of the apparatus in a lightless environment. (g) PCE tracking for a strain-free device MPP with two bandgaps in N2 atmosphere. (Reprinted with permission from Ref. [96]. Copyright 2023, Wiley Online Library).