The journal Nature Communications recently published online the results of the RenWencai study group of Institute of Metal Research, the research realize the low-cost and large-area preparation of high-quality uniform strict monolayer tungsten disulfide (WS2) single crystal and thin films, which laid the material foundation on the applications of its flexible electronic / optoelectronic devices and valley electronics and spin electronics field.

 

The researchers found that gold is the only metal that does not react with sulphur and generate sulfide at a high temperature and have a catalytic activity, which can effectively reduce the barrier of tungsten trioxide vulcanization process, and tungsten atoms in gold have a extremely low solubility at high temperature.