Molybdenum-sulfide-based optoelectronic device for multivalued logic

Multivalued logic (MVL) technology has great potential in the exploration of breaking through the traditional von Neumann architecture. Compared with the binary logic system, MVL can effectively reduce the complexity of the system and improve the integration density of devices to process larger amounts of data. Recently, some preliminary studies have been conducted on negative differential resistance (NDR) effect devices, which can be applied to ternary logic processing based on their nonlinear response characteristics of current and voltage. In this study, the type III heterojunction formed by MoS 2-X O X and TiO X is used to achieve the NDR effect, and we analyze its potential in ternary logic processing. Then, utilizing the photosensitive characteristics of the structure, a laser is introduced to regulate the effect so that the device additionally presents quaternary/binary logic under low/high bias. Finally, we achieve the processing of binary/ternary/quaternary logic on a single device through different modulation methods. This work provides effective ideas and directions for the development of MVL technology.