List of top Electronics Questions on Metals and semiconductors

The temperature dependence of the electrical conductivity (σ) of three intrinsic semiconductors A, B and C is shown in figure

Let $E_A, E_B$ and $E_C$ be the bandgaps of A, B and C, respectively. Which one of the following relations is correct?

As shown in the figure, two metal-semiconductor junctions are formed between an n-type semiconductor S and metal M. The work functions of S and M are $\phi_S$ and $\phi_M$, respectively, with $\phi_M > \phi_S$. The I-V characteristics (on linear scale) of the junctions is best represented by