Electronic Devices - Semiconductor Diodes - Discussion
Discussion Forum : Semiconductor Diodes - General Questions (Q.No. 10)
10.
The diffused impurities with ________ valence electrons are called donor atoms.
Discussion:
4 comments Page 1 of 1.
Divyanjali said:
7 years ago
Normally germanium or silicon has 4 valency atoms when pentavalent impurities combine with silicon or germanium 4 impurity atoms combines 4 atoms of silicon or germanium. Then 1 atom of impurity remains as it is.
That's why it acts donor and it donates that atom whenever other atom wants to form a bond with that atom.
That's why it acts donor and it donates that atom whenever other atom wants to form a bond with that atom.
Mahatma said:
7 years ago
N-type (Pentavalent) are donors, which have 5 valence electrons. While P-type (Trivalent) are acceptors with lesser valence electrons which is 3.
Jeevan said:
8 years ago
Ptype-tri valent-donors, ntype -penta valent-acceptors.
Samreen said:
1 decade ago
The dopant is pentavalent atom i.e., the atom containing five valence electrons.
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