Graphdiyne Nanosheets for Multicolor Random Lasers

Abstract

By breaking the restriction of mirrors, random lasers from a disordered medium have found unique applications spanning from displays to spectroscopy to biomedical treatments to light fidelity. Gain media in two dimensions with distinct physical and chemical properties may lead to the next generation of random lasers. Graphdiyne (GDY), a two-dimensional graphene allotrope with intrigued carbon hybridization, atomic lattice, and optoelectronic properties, has attracted increasing attention recently. Herein, the photoemission characteristics and photocarrier dynamics in GDY are systematically studied, and multicolor random lasers have been unprecedently realized using GDY nanosheets as the gain. Considering the well biocompatibility of GDY, these results may look ahead to a plethora of potential applications in the nanotechnology platform based on GDY.