Question

The conductivity of intrinsic semiconductors can be increased by adding a suitable impurity. This process is called ______$\left(P\right)$. This can be done with an impurity which is ______$\left(O\right)$ rich or deficient as compared to the semiconductor. Such impurities introduce ______$\left(R\right)$ defects in them. Electron rich impurities result in ______$\left(S\right)$ type semiconductors while electrons deficit impurities result in______$\left(T\right)$ type semiconductors.

• A. $\left(P\right)$- doping $\left(Q\right)$- proton $\left(R\right)$- point $\left(S\right)$-p $\left(T\right)$-n
• B. $\left(P\right)$- doping $\left(Q\right)$- electron $\left(R\right)$- non-stoichiometric $\left(S\right)$- p $\left(T\right)$- n
• C. $\left(P\right)$- energy gap $\left(Q\right)$- charged $\left(R\right)$- impurity $\left(S\right)$- n $\left(T\right)$- p
• D. $\left(P\right)$- doping $\left(Q\right)$- electron $\left(R\right)$- electronic $\left(S\right)$- n $\left(T\right)$- p

Answer 1

The correct option is D $\left(P\right)$- doping $\left(Q\right)$- electron $\left(R\right)$- electronic $\left(S\right)$- n $\left(T\right)$- p

To increase the conductivity of intrinsic semiconductor, some impurities are added. This process is called doping $\left(P\right)$. The impurity can be of two type - electron $\left(Q\right)$ rich or deficient. Due to doping, electronic $\left(R\right)$ defects are introduced in the matter. If the impurities are electron rich then it will lead to the formation of n-type $\left(S\right)$ semiconductors and if the impurities are electron deficit then it will lead to the formation of p-type semiconductor $\left(T\right)$.