A Robust 3D Self-powered Photoelectrochemical type Photodetector based on MoSe2 Nanoflower

Abstract Molybdenum selenide (MoSe2) has been extensively studied in recent years due to its strong absorption for sunlight and unique band structure. Herein, a self-assembly three-dimensional (3D) MoSe2 nanoflowers were prepared by a two-step process. Significantly, the photodetection device based on MoSe2 nanoflowers exhibited a maximum responsivity about 12.39mA/W and a rapid photo-response time about 0.15s at 0V bias under simulated sunlight exposure benefiting from its large specific surface area and unique morphologic structure. Meanwhile, we demonstrated the outstanding stability after two weeks of the photodetection device. In this way, the MoSe2 nanoflower-based photodetectors enriched the basic research of molybdenum selenide and provided some reference for the following researches based on molybdenum selenide.