Chapter 21, Problem 21.141CP

Interpretation Introduction

Interpretation:

To draw an MO energy level diagram for $\text{ZnSe}$ doped with Ga and show the population of the bands and explain why Ga substitution gives an n-type semiconductor.

Concept introduction:

When pentavalent impurity is added to an intrinsic or pure semiconductor, then it is calledan n-type semiconductor. Pentavalent impurities such as phosphorus, arsenic, antimony etc are called donor impurity. 

To determine:

Why Ga substitution gives an n-type semiconductor and to draw an MO energy level diagram for $\text{ZnSe}$ doped with Ga and show the population of the bands.