Fig. 4: Physical properties and chemical stability of CsPb0.6Sn0.4I3 perovskites.
From: Sub-1.4eV bandgap inorganic perovskite solar cells with long-term stability
a TA spectra of N-CsPb0.6Sn0.4I3, G-CsPb0.6Sn0.4I3, and G-S-CsPb0.6Sn0.4I3 thin films. b Dark current–voltage curves of capacitor-like devices using N-CsPb0.6Sn0.4I3, G-CsPb0.6Sn0.4I3, and G-S-CsPb0.6Sn0.4I3 thin films. UV-vis spectra evolution of thin films stored controlled ambient conditions (RT, 80% RH). c N-CsPb0.6Sn0.4I3, d G-CsPb0.6Sn0.4I3, and e G-S-CsPb0.6Sn0.4I3 thin films. f Absorbance (at 800 nm) variation as a function of storage duration. Insets are corresponding photographs of the thin films.
