Fig. 2: Band structure of 4HPA OSCS.

a The energy band structure, E_g is the bandgap of 4HPA OSCS, b anisotropic 1/m* (m* is the effective mass) along a and c axes of 4HPA OSCS, and crystal structures viewing along b axis and corresponding electron cloud density (green clusters) of c LUMO, d L1 levels.