NCERT Class XII Chemistry
Chapter - The Solid State
Questions with Solutions
© examsnet.com
Question : 20
Total: 50
Classify each of the following as being either a p-type or n-type semiconductor :
(i) Ge doped with In
(ii) B doped with Si.
(i) Ge doped with In
(ii) B doped with Si.
Solution:
(i) Ge is group 14 element and In is group 13 element. Hence, an electron deficient hole is created and therefore, it is a p-type semiconductor.
(ii) B is group 13 element and Si is group 14 element, there will be a freeelectron, So, it is an n-type semiconductor.
(ii) B is group 13 element and Si is group 14 element, there will be a freeelectron, So, it is an n-type semiconductor.
© examsnet.com
Go to Question: