why Ge is not used as substrate in IC Fab?

[electronics_kumar]

why is ge not used for ic

only si,GaAs,indium phosphide (InP)

 

[yjkwon57]

Hi~~

I've heard that the oxide quality for Si is best among all semiconductor material, thus, helping wafer fabrication very much, then, leading to a low-cost processing.

Bye~~

 

[v_c]

Isn't it the cost -- I believe the cost of germanium is about $3/gram.

Cheers,
v_c

 

[pankaj waghmare]

as we know that conductivity of si greater than ge. and subrate plays a very imp role in current conduction so definately si used