Two semiconductor materials X and Y, shown in the given, are made by dopinggermanium crystal with indium and arsenic respectively. The two are joined end to end and connected to a battery as shown. (i) Will the junction be forward biased or reverse biased ? (i) Sketch a V-I graph for this arrangement.

Two semiconductor materials X and Y, shown in the given, are made by d

1.	Two semiconductor materials X and Y, shown in the given, are made by dopinggermanium crystal with indium and arsenic respectively. The two are joined end to end and connected to a battery as shown. (i) Will the junction be forward biased or reverse biased ? (i) Sketch a V-I graph for this arrangement.
Answer» Solution :(i) The semiconduct or material X is behaving as p-type, because here the dopant indium is trivalent. Material Y behaves as n-type because there the dopant ARSENIC is PENTAVALENT. As p-side of junction has been connected to POSITIVE terminal of battery, the junction is FORWARD biased. (i) V-Igraph is shown in

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