▎ 摘　　要

The metallic (1T) structure of transition metal dichalcogenides is of many peculiar chemical and physical properties such as higher carrier mobility and narrower bandgap compared to 2H structure and so maybe beneficial in their photodetection application. Currently, efficient assembly of 1T-WSe2 in the one-step process is still an enormous challenge. Here we report a modified facile hydrothermal approach assembling 1T-WSe2 nanosheets and 1T-WSe2/reduced graphene oxide (RGO) hybrids. The photodetector based on the assembled 1T-WSe2 nanosheets showed very high photocurrent and extremely intense and fast light responses. The RGO incorporation introduced a remarkable charge transfer at the heterojunction interface and further dramatically heightened the photocurrent and light responsivity.