A semiconductor X is made by doping a germanium crystal with arsenic (Z = 33). A second semiconductor Y is made by doping germanium with indium (Z = 49). The two are joined end to end and connected to a battery as shown. Which of the following statements is correct?
1
X is p-type, Y is n-type and the junction is forward biased
2
X is n-type, Y is p-type and the junction is forward biased
3
X is p-type, Y is n-type and the junction is reverse biased
4
X is n-type, Y is p-type and the Junction is reverse biased