Question

Which types of semiconductor is formed when germanium is doped in the gallium as indicated in the figure ?

• A. P – type semiconductor Ge Ge Ge Ge
• B. N – type semiconductor Ge $\begin{matrix} Ga \end{matrix}$ Ge Ge
• C. No change in conductivity Ge Ge Ge Ge
• D. It becomes superconductor Ge Ge Ge Ge

Answer 1

Answer: (A)

P – type semiconductor

Ge Ge Ge Ge

Answer 2

Impurity of lower group creates a positively charged hole. On applying potential difference, P – holes conduct electric current.