The Carrier Statistics, Terahertz Frequency, Extremely Degenerate Opto-electronic Materials and All That

In this chapter, we study the carrier statistics (CS) in quantized extremely degenerate III–V, ternary, quaternary and tetragonal compounds respectively. We have also investigated the influence of photo-excitation and electric field on the Fermi energy. We note by taking various types of opto-electronic materials as examples that the Fermi energy oscillates with inverse magnetic field due to SdH effect, changes with changing electric field, light intensity, wave length and alloy composition in different ways which are totally energy band constants dependent.