Carbon, silicon and germanium have four valence electrons each. At room temperature which one ofthe following statements is most appropriate ?
Carbon, silicon, and germanium have four valence electrons each. These are characterised by valence and conduction bands separated by energy band gap respectively equal to (Eg)Si,(Eg)c and (Eg)Ge. Which of the following statements is true?
A)(Eg)Si<(Eg)Ge<(Eg)C
B)(Eg)C<(Eg)Ge>(Eg)Si
C)(Eg)C>(Eg)Si>(Eg)Ge
D)(Eg)C=(Eg)Si=(Eg)Ge
Carbon, silicon, and germanium have four valence electrons each. These are characterised by valence and conduction bands separated by energy band gap respectively equal to (Eg)Si,(Eg)cand (Eg)Ge. Which of the following statements is true?
Carbon, silicon and germanium have four valence electrons each. These are characterised by valence and conduction bands separated by energy band gap respectively equal to (Eg)C, (Eg)Si and (Eg)Ge. Which of the following statements is true? (a) (Eg)Si < (Eg)Ge < (Eg)C
(b) (Eg)C< (Eg)Ge > (Eg)Si
(c) (Eg)C> (Eg)Si > (Eg)Ge
(d) (Eg)C= (Eg)Si = (Eg)Ge
Let ΔE denote the energy gap between the valence band and the conduction band. The population of conduction electrons (and of the holes) is roughly proportional to e−ΔE/2kT. Find the ratio of the concentration of conduction electrons in diamond to the in silicon at room temperature 300 K. ΔE for silicon is 1.1 eV and for diamond is 6.1 eV. How many conduction electrons are likely to be in one cubic metre of diamond?
Carbon, Silicon, and Germanium atoms have four valence electrons each. Their valence and conduction bands are separated by energy band gaps represented by (Eg)C,(Eg)Si, and (Eg)Ge respectively. Which one of the following relationships is true in their case: