An n-type semiconductor has more conductivity as compared to that of a p-type semiconductor at ROOM Temperature. Why?

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Solution

Dear student, $A n n - t y p e s e m i c o n d u c t o r h a s h i g h e r c o n d u c t i v i t y b e c a u s e t h e r e a r e m o r e n u m b e r e l e c t r o n s . E l e c t r o n s a r e i n m a j o r i t y i n N - t y p e s e m i c o n d u c t o r . a n d t h e m o b i l i t y o f e l e c t r o n s a r e h i g h e r t h a n t h a t o f h o l e s . A n d m o r e i s t h e m o b i l i t y o f c a r r i e r s, m o r e i s t h e c o n d u c t i v i t y . H e n c e s e m i c o n d u c t o r N - t y p e h a s h i g h e r c o n d u c t i v i t y .$ Regards

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Which of the following statements are true about semiconductors ?

(a) Silicon doped with electron rich impurity is a p-type semiconductor

(b) Silicon doped with an electron rich impurity is an n-type semiconductor

(d) An electron vacancy increases the conductivity of n-type semiconductor

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