Table 2. DSE-Based Size and Shape Analysis of CsPbX3 Colloidal NCs Resulting from the Assumption of a Bivariate Lognormal Distribution with Average Diameter ⟨D⟩ and Standard Deviation σa.
CsPbCl3 | CsPbBr3 | CsPbI3 | |
---|---|---|---|
⟨Dab⟩, σab/⟨Dab⟩ | 5.34, 0.60 | 8.19, 0.24 | 9.86, 0.21 |
⟨Lc⟩, σc/⟨Lc⟩ | 7.62, 0.45 | 9.79, 0.20 | 8.01, 0.21 |
aspect ratio | 1.41 | 1.19 | 0.81 |
⟨Deq⟩, σ/⟨Deq⟩ | 6.50, 0.41 | 9.84, 0.17 | 10.43, 0.15 |
⟨DSAXS⟩, σ/⟨DSAXS⟩ | 5.62(7), 0.20(1) | 7.65(4), 0.16(2) | – |
Number-based values refer to average size (nm) and size dispersion along the two growth directions of prismatic NCs (⟨Dab⟩, σab/⟨Dab⟩, ⟨Lc⟩, σc/⟨Lc⟩) and of the sphere of equivalent volume (⟨Deq⟩, σ/⟨Deq⟩) and relative aspect ratio (⟨Lc⟩/⟨Dab⟩). Number-based average values provided by SAXS analysis are quoted in the last line. SAXS-based values are also provided.