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The conductivity of intrinsic semiconduc...

The conductivity of intrinsic semiconductors can be increased by adding a suitable impurity. This process is called __(P)__. This can be done with an impurity which is __(Q)_ rich or deficient as compared to the semiconductor. Such impurities introduce __(R)__ defects in them. Electron rich impurities result in __(S)__ type semiconductors while electron deficit impurities result in __(T)___ type semiconductors .

A

P-doping , Q-proton , R-point , S- p , T-n

B

P-doping , Q-electron , R-non-stoichiometric , S- p , T-n

C

P-energy gap , Q- charged , R-impurity , S-n , T-p

D

P-doping , Q-electron , R-electronic , S-n , T-p

Text Solution

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To solve the question, we need to fill in the blanks with the appropriate terms related to the conductivity of intrinsic semiconductors and the process of doping. Let's go through each part step by step. ### Step-by-Step Solution: 1. **Identify the process of increasing conductivity**: - The question states that the conductivity of intrinsic semiconductors can be increased by adding a suitable impurity. This process is known as **doping**. - **Fill in blank (P)**: Doping 2. **Determine the type of impurity**: - The question mentions that this can be done with an impurity that is either rich or deficient compared to the semiconductor. In this context, we refer to impurities that are **electron-rich or electron-deficient**. - **Fill in blank (Q)**: Electron 3. **Understand the type of defects introduced**: - The impurities introduced during doping create certain types of defects in the semiconductor. These are referred to as **electronic defects**. - **Fill in blank (R)**: Electronic 4. **Classify the type of semiconductors**: - When electron-rich impurities are added, they result in **n-type semiconductors**. Conversely, when electron-deficient impurities are added, they lead to **p-type semiconductors**. - **Fill in blank (S)**: n-type - **Fill in blank (T)**: p-type ### Final Answers: - (P) Doping - (Q) Electron - (R) Electronic - (S) n-type - (T) p-type ### Summary: The complete filled blanks are: - (P) Doping - (Q) Electron - (R) Electronic - (S) n-type - (T) p-type
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