Semiconductors ... band. Insulators have a wide band gap that is difficult for electrons to cross without absorbing a great ...

Conductors, semiconductors and insulators are differentiated by their band gap, which essentially measures how much energy electrons need to move freely through the material. So in a conductor ...

Figure 1: Experimental set-up and energy level diagram of GaN ... time scale activates the semiconductor device with instantaneous switching from insulator to conductor and vice versa.