What is function of single band reduced carrier?

A single band reduced carrier model is used in semiconductor physics to simplify the analysis of charge transport in materials. It focuses on a single energy band, typically the conduction band for n-type semiconductors or the valence band for p-type semiconductors, while neglecting other bands and interactions. This model helps in understanding carrier concentration, mobility, and conductivity in a material under various conditions, streamlining calculations in semiconductor device design and analysis.