Answer to Question #97 in Electromagnetism for Silvia Rosso
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?
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.