Description : Semiconductor germanium and silicon are (a) Pentavalent (b) trivalent (c) divalent (d) tetravalent
Last Answer : (d) tetravalent
Description : In order to obtain p-type germanium it should be doped with a (A) Trivalent impurity. (B) Tetravalent impurity. (C) Pentavalent impurity. (D) Any of the above will do.
Last Answer : (A) Trivalent impurity.
Description : In n type semi conductor added impurity is (A) pentavalent. (B) divalent. (C) tetravalent. (D) trivalent.
Last Answer : (A) pentavalent.
Description : Give two examples of trivalent and pentavalent impurities.
Last Answer : Trivalent Impurities: 1) Gallium (Ga) 2) Indium (In) 3) Aluminium (Al) 4) Boron (B) Pentavalent Impurities: 1) Phosphorus (P) 2) Antimony (Sb) 3) Arsenic (As) 4) Bismuth (Bi)
Last Answer : A pentavalent impurity has 5 Valence electrons.
Last Answer : Addition of pentavalent impurity to a semiconductor creates many Free electrons.
Last Answer : When a pentavalent impurity is added to a pure semiconductor, it becomes n-type semiconductor.
Last Answer : All the elements which have three (3) conjugates are called trivalent elements. For example: aluminum.
Description : A semiconductor formed by addition of trivalent impurity is : a) P–Type b) N–Type c) Q–type d) M–Type
Last Answer : d) M–Type
Description : Addition of trivalent impurity to a semiconductor creates many (A) holes. (B) free electrons. (C) valance electrons. (D) bound electrons.
Last Answer : (B) free electrons.
Last Answer : Addition of trivalent impurity to a semiconductor creates many Holes.
Last Answer : A trivalent impurity has 3 valence electrons.