Single-Photon Emission from Point Defects in Hexagonal Boron Nitride Induced by Plasma Treatment.
Libin ZengSiyu ZhangJunhua MengJingren ChenJi JiangYiming ShiJidong HuangZhigang YinJinliang WuXingwang ZhangPublished in: ACS applied materials & interfaces (2024)
Solid-state quantum emitters are gaining significant attention for many quantum information applications. Hexagonal boron nitride (h-BN) is an emerging host material for generating bright, stable, and tunable single-photon emission with narrow line widths at room temperature. In this work, we present a facile and efficient approach to generate high-density single-photon emitters (SPEs) in mechanically exfoliated h-BN through H- or Ar-plasma treatment followed by high-temperature annealing in air. It is notable that the postannealing is essential to suppress the fluorescence background in photoluminescence spectra and enhance emitter stability. These quantum emitters exhibit excellent optical properties, including high purity, brightness, stability, polarization degree, monochromaticity, and saturation intensity. The effects of process parameters on the quality of quantum emitters were systematic investigated. We find that there exists an optimal plasma power and h-BN thickness to achieve a high SPE density. This work offers a practical avenue for generating SPEs in h-BN and holds promise for future research and applications in quantum photonics.
Keyphrases
- energy transfer
- light emitting
- molecular dynamics
- quantum dots
- solid state
- room temperature
- high density
- high temperature
- density functional theory
- ms ms
- reduced graphene oxide
- monte carlo
- healthcare
- machine learning
- health information
- optical coherence tomography
- visible light
- ionic liquid
- replacement therapy
- current status
- highly efficient
- quality improvement
- atomic force microscopy
- solid phase extraction