Fig. 4: Temperature dependence of the optical absorption.
From: The optical conductivity of few-layer black phosphorus by infrared spectroscopy
IR extinction spectra of a 3 L and d 7 L BP on quartz substrates at varying temperatures from 10 K to 300 K, respectively. The spectra are vertically offset for clarity. Integrated area of the exciton peaks of b 3 L and e 7 L BP as a function of temperature, respectively. Linewidth of the exciton peaks of c 3 L and f 7 L BP as a function of temperature, respectively. Data are extracted from spectral fitting using Eq. (3) in Methods.
