A persistently increasing resistance ratio and repeatable non-volatile memory in AZO/CZTSe/FTO resistive switching devices

Abstract

In this paper, the Cu2ZnSnSe4 (CZTSe) film was deposited on the fluorine-doped SnO2 (FTO), and Al-doped ZnO (AZO) and FTO act as top and bottom electrodes for constructing a sandwich structure, in which the AZO/CZTSe/FTO device not only represents outstanding non-volatile resistive switching memory behavior, but also shows a persistently increasing resistance ratio phenomenon for the first time. This work reveals that the device based on CZTSe film holds an excellent memory effect for non-volatile memory applications in the electronic equipment.