fig3
Figure 3. (A) Room-temperature carrier concentration (nH) and carrier mobility (μH) of the 3 GPa, 4 GPa, and 5 GPa samples; (B) Optical band gap determined by UV spectroscopy; (C) The calculated μHversus nH curves based on the SPB model; (D) Temperature dependence of electrical conductivity (σ)for the 3 GPa, 4 GPa, and 5 GPa samples. SPB: Single parabolic band.
