The charge carriers in a $p$-type semiconductor are

When an $N-$type semiconductor is heated,what happens to the charge carriers?

When an $n$-type semiconductor is heated,

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

Pure $Si$ at $500\, K$ has equal number of electron $(n_e)$ and hole $(n_h)$ concentrations of $1.5 \times 10^{16} \, m^{-3}$. Doping by indium increases $n_h$ to $4.5 \times 10^{22} \, m^{-3}$. The doped semiconductor is of:

Which of the following statements is correct regarding the charge of semiconductors?