Skip to main content
. 2020 Apr 3;142(17):7813–7826. doi: 10.1021/jacs.0c00647

Figure 5.

Figure 5

119Sn as a probe of tin(II) halide perovskite degradation. 119Sn solid-state MAS NMR spectra at 4.7 T, 12 kHz MAS.,and 298 K: (a) MASnBr3 (as prepared); (b) MASnBr3 (degraded for 1 h at 250 °C in air); (c) SnO2; (d) SnO2 + 10 mol % SnBr2 (ground and annealed at 250 °C in air); (e) FASnBr3 (as prepared); (f) FASnBr3 (degraded for 5 days at RT, in air); (g) FASnBr3 (degraded for 0.5 h at 250 °C in air); (h) CsSnBr3 (as prepared); (i) CsSnBr3 (degraded for 0.5 h at 350 °C in air); (j) MASnI3 (as prepared); (k) MASnI3 (degraded for 1 h at 150 °C in air); (l) FASnI3 (as prepared); (m) FASnI3 (degraded for 1 h at RT in air); (n) CsSnI3 (as prepared); (o) CsSnI3 (degraded for 3 h at 100 °C in air). The dashed lines indicate points at which spectra acquired at different transmitter offsets were stitched together: (b, i) two offsets; (k) three offsets. For (m) and (o) only the high-field (low ppm) part was acquired.