Explain want to dope gaas to make an n-type semiconductor

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If you want to dope GaAs to make an n-type semiconductor with an element to replace Ga, which of the elements below would you pick?

Al
Si
In
Zn
Ge

Al and In
Zn and Ge
Al and Zn
Ge and Si
only Si

Reference no: EM13241593

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