Fig. 4
From: Bismuth and antimony-based oxyhalides and chalcohalides as potential optoelectronic materials

a Histogram of HSE + SOC band gaps, effective masses of electron and hole for BiSeCl, BiSeBr, BiSeI, and Bi3Se4Br. b Crystal structure, band structure, and partial density of states (DOS) of BiSeCl. c Crystal structure, band structure, and partial DOS of Bi3Se4Br. d Absorption spectra of BiSeCl, BiSeBr, BiSeI, and Bi3Se4Br