Fig. 5: Frequency-resolved THz photoconductivity of 2DCP-MPcs.
a, Frequency-resolved complex THz photoconductivity measured at ~0.5 ps after the maximum photoconductivity of 2DCP-CuPc (top) and 2DCP-NiPc (bottom). The solid lines correspond to the Drude fits describing the real and imaginary parts of the complex THz photoconductivity. b, Comparison of charge carrier mobilities and optical bandgaps of 2DCP-MPcs with reported COFs (light wine spots) and MOFs (light blue spots) measured by THz spectroscopy at ambient temperature (Supplementary Fig. 61 and Supplementary Table 4 provide a comprehensive comparison and references). The reported powder samples exhibit mobilities below 70 cm2 V−1 s−1 (underneath the dashed reference line). c, T-dependent frequency-resolved complex THz photoconductivity measured at ~0.5 ps after the maximum photoconductivity of 2DCP-NiPc. The dashed line highlights the shift in the intersection of the real and imaginary components of the complex THz photoconductivity; the intersection corresponds to the momentum scattering frequency following the Drude model, which is inversely proportional to the mobility. d, T-dependent THz mobilities (left y axis) and scattering times (right y axis) of 2DCP-CuPc and 2DCP-NiPc. The error bars originate from the uncertainty of the obtained charge scattering time from the Drude fit. The dashed lines serve as guides to the eye.
