Answer to Question #97 in Electricity and Magnetism for Silvia Rosso

Question

To obtain the desired type of impurity conduction in semiconductor technology phosphorous, gallium, arsenic, indium, antimony are often used. Which of these elements can be introduced as an impurity in germanium to receive electronic conductivity?

Answer 1

Electronic conductivity will be present at the introduction of pentavalent chemical element. Pentavalent elements are as follows: phosphorus, arsenic, antimony. With the introduction of Ghalia and indium (trivalent), the conductivity will be of p-type character.