In reverse biasing, the applied voltage on the − − side is positive and is negative on the − − side. The applied bias and the barrier potential are in the same direction making the effective junction potential . As a result, the junction width will increase. The higher junction potential would restrict the flow of majority camers to a much greater extent. However, such a field will favour the flow of minority corners. So, reverse bias cu1Tent will be due to the minority carriers only.