p-type semiconductorF-centre

1.	p-type semiconductorF-centre
Answer» p-type semiconductor: When silicon is doped with group 13 element like B, Ga, Al etc. then hole is created in silicon lattice which is responsible for electrical conductivity and known as p-type semiconductor. F-Centre: These are the anionic sites occupied by impaired electrons in the crystal lattice. F-centres are responsible for development of colour in complexes.

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