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Avalon_18
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- TL;DR Summary
- why do group 15 share the same conduction band as the silicon atoms.
Summary: why do group 15 share the same conduction band as the silicon atoms.
In a n type extrinsic semiconductors the atoms of silicon are doped with the atoms of a gr15 element to increase the number of valance electrons in the semiconductor. But the reason given to me by my teacher and what I've seen online is that the valance band of the gr15 elements is closer to the valance band of the silicon atoms, making it easier for the electrons form the valance band of the gr15 atom to jump to the conduction band with minimal amount of energy. But why is it that the gr 15 element used has the same energy level for the conduction band as the silicon atoms.
Is it possible that the presence of the silicon atoms has an effect on the conduction band of the element.
In a n type extrinsic semiconductors the atoms of silicon are doped with the atoms of a gr15 element to increase the number of valance electrons in the semiconductor. But the reason given to me by my teacher and what I've seen online is that the valance band of the gr15 elements is closer to the valance band of the silicon atoms, making it easier for the electrons form the valance band of the gr15 atom to jump to the conduction band with minimal amount of energy. But why is it that the gr 15 element used has the same energy level for the conduction band as the silicon atoms.
Is it possible that the presence of the silicon atoms has an effect on the conduction band of the element.