Speaker
Description
Single-photon emitters (SPEs) are key building blocks for next-generation quantum communication and information technologies. Hexagonal boron nitride (hBN), with its graphene-like layered structure, wide bandgap, and van der Waals bonding, has emerged as a promising host material for stable, room-temperature single-photon emission. In this study, we significantly enhance the density and stability of defect-based quantum emitters in thin hBN layers by immersing the material in selected organic solvents, followed by thermal annealing in an argon (Ar) gas environment. Comprehensive photoluminescence (PL) spectroscopy and surface analyses confirm the activation and improved emission stability of defect centers. This approach provides a robust and scalable route toward the fabrication of bright and reliable single-photon sources based on hBN.