Which of the following is an inorganic compound semiconductor?

To obtain electrons as majority charge carriers in a semiconductor,the impurity mixed is

What is the relation between the number density of holes $(n_h)$ and free electrons $(n_e)$ in an intrinsic semiconductor at room temperature?

In a $P$-type semiconductor, the acceptor level is $57 \text{ meV}$ above the valence band. What is the maximum wavelength of light (in $\mathring{A}$) required to create a hole?

Indium impurity in germanium makes

In a $p$-type semiconductor,which of the following statements is true?