▎ 摘　　要

Superabsorbers can find application in the fields of solar cells, blackbody radiation, thermal control systems, and stray light elimination devices. Herein, graphene-like 2H/1T-molybdenum diselenide (MoSe2) was synthesized via a hydrothermal method and shows superhigh solar absorption (similar to 99%) within a range of 200-2500 nm. In the synthesis, selenium dioxide (SeO2) was used as a Se source instead of Se powder, which plays an important role in manipulating the graphene-like morphology and the multiphasic composition of the MoSe2. Consequently, the as-prepared MoSe2 nanoflowers possess desired band structure and abundant pores and pore channels for strong optical absorption. DFT calculations clarify that the 1T-MoSe2 primarily contributes to the superior optical absorption over the 2H-MoSe2. This work provides a facile strategy for enhancing the optical absorption of two-dimensional transition metal dichalcogenides (2D TMDCs) by engineering morphology and phase. (C) 2021 Elsevier B.V. All rights reserved.