Patent ID: 7238964

Claim:
A memory cell comprising: a first electrode; a second electrode; and an active layer which is arranged between the first and the second electrode, the active layer comprising the following components: a) a compound selected from the group consisting of in which R 1 and R 4 , independently of one another, have the following meaning: —H, -alkyl, -aryl, -heteroaryl, —O-alkyl, —O-aryl, —O-heteroaryl, —SH, —S-alkyl, —S-aryl, —S-heteroaryl, —CO-alkyl, —CO-aryl, —CO-heteroaryl, —CS-alkyl, —CS-aryl, —CS-heteroaryl, -halogen, —CN and/or —NO 2 , in which R 1 and R 2 , R 2 and R 3 , R 3 and R 4 together may form a ring, (b) a compound of the general formula II: in which R 5 to R 7 , independently of one another, may have the following meaning: —H, -alkyl, -aryl, -heteroaryl, —O-alkyl, —O-aryl, —O-heteroaryl, —NH 2 , —N(alkyl) 2 , —N(aryl) 2 , —N(heteroaryl) 2 , —SH, —S-alkyl, —S-aryl, —S-heteroaryl, —CO-alkyl, —CO-aryl, —CO-heteroaryl, —CS-alkyl, —CS-aryl, —CS-heteroaryl, -halogen, —CN and/or —NO 2 , in which R 5 and R 6 or R 7 and R 8 together may form a ring.