Question

Majority and Minority carrier concentration of the semiconductor can be
measured using the technique, named as;​

Answer 1

Answer:

Field Effect Transistors: MISFET, MESFET, and HEMT

Bipolar transistors use both majority and minority carriers in semiconductors. There is, however, another type of transistor, where only the majority carriers are used and their density is controlled by an electric field effect. This type of transistor is called a field effect transistor (FET) and is widely used in many semiconductor systems. Several types of FETs are schematically shown in Figure 5. Metal–insulator–controlled semiconductor FETs (MISFETs) are shown in Figure 5a. When a positive bias is applied to the gate, conductive electrons start accumulating at the semiconductor–insulator interface. Due to the confinement by the electric field, the accumulated electrons have a two-dimensional (2D) nature.