Photocatalysts

Photocatalyst

Specially structured metal oxide nano-materials with high specific surface area generate electron-hole pairs upon exposure to ultraviolet light. Holes have the ability to produce oxygen molecules or free radicals, exhibiting strong oxidizing power. This can be employed for the decomposition of organic compounds, contributing to the removal and purification of pollutants in the environment. Nano photocatalysts can be recycled and reused.

Resistive Random Access Memory(RRAM)

RRAM is a novel data storage device that utilizes different resistance states to record data (0 or 1), and it is considered one of the most promising technologies to replace current non-volatile memory. Currently, the resistance-switching layer in RRAM is predominantly produced using vacuum processes, which are expensive and have low material utilization rates. Therefore, by employing wet processes, coupled with low-temperature drying and sintering, it is possible to produce low-cost, highly uniform resistance-switching layer films, achieving excellent resistance-switching characteristics.

A single-bit RRAM employs a 1T1R architecture, where the variable resistance is represented by the red circle. The typical structure consists of a sandwich configuration with the upper electrode, variable resistance layer, and lower electrode.

The I-V electrical properties of materials prepared using sol-gel method, including zinc oxide (ZnO), copper oxide (CuO), and indium gallium zinc oxide (IGZO), along with materials synthesized through the hydrothermal method, such as titanium dioxide (TiO2): (a) IGZO, (b) ZnO, (c) CuO, and (d) TiO2.