Introduction (doping) (p-type) p (n-type) n p n p n p-n The p-n Junction Diode p-n (Continuous and single crystal) p-n (Acceptor impurity) (Donor impurity) n- p-n (p-type) p- (n-type) p n A (anode) K (cathode) p-n p n (A) (K) (A) (K) - -