  By breaking the restriction of mirrors, random lasers from a disordered
medium have found unique applications spanning from displays, spectroscopy,
biomedical treatments, to Li-Fi.Gain media in the form of two-dimension with
distinct physical and chemical properties may lead to the next-generation of
random lasers. Graphdiyne, a 2D graphene allotrope with intrigued carbon
hybridization, atomic lattice, and optoelectronic properties, has attracted
increasing attention recently. Herein, the photon emission characteristics and
photo-carrier dynamics in graphdiyne are systematically studied, and the
multicolor random lasers have been unprecedently realized using graphdiyne
nanosheets as the gain. Considering the well bio-compatibility of graphdiyne,
these results may look ahead a plethora of potential applications in the
nanotechnology platform based on graphdiyne.
