Because they have four valence electrons.
Silicon is more semiconductor than Germanium because the characteristics of silicon can be easily modified to obtain either a p-type or n-type material.
Silicon is a good semi conductor than germanium because silicon is more readily available, cheaper and stable.
Intrinsic semiconductivity
Yes! Which is why it has been mostly replaced by silicon in the semiconductor industry.
Elements of group 4a are used as semi-conductorse.g. silicon,germanium etc.
silicon and germanium
Yes,silicon and germanium are semiconductors.
Silicon Germanium
Silicon is more semiconductor than Germanium because the characteristics of silicon can be easily modified to obtain either a p-type or n-type material.
germanium low sensitivity
Silicon
Silicon is a good semi conductor than germanium because silicon is more readily available, cheaper and stable.
* silicon * germanium * gallium arsenide * etc.
Intrinsic semiconductivity
germanium
No metal is semiconductor. By definition metal is conductor. There are metalloids elements. Like silicon and germanium. They are semiconductors. There is no hard and fast definition of such elements.
gaAs is semiconductor