Figure 8.
Terahertz mobility, μT, of solution-synthesized 2D SnS nanocrystals determined by TRTS at room temperature. (a) Fluence-dependence of ΔE / E0 for SnS nanoribbons at pump-probe delay times, tpp, 0 to 200 ps using 800 nm pump excitation. (b) Frequency-dependence of the real part of the generated change in photoconductivity in SnS nanoribbons with a pump fluence of 0.5 μJ / pulse, indicating that at low frequencies and longer pump delay times it nearly matches the measured electrical conductivity of ~ 0.1 S/cm. (c) The product of the carrier photogeneration yield and terahertz mobility at tpp 0 – 200 ps when pumped with a fluence of 0.5 μJ / pulse, as determined using Equation 3, for both SnS nanoribbons and SnS square nanosheets.