材料科学
六方氮化硼
光子学
光子
退火(玻璃)
光电子学
晶体缺陷
氮化硼
氮化物
亮度
阴极发光
带隙
纳米光子学
激发态
纳米技术
凝聚态物理
光学
发光
原子物理学
物理
复合材料
图层(电子)
石墨烯
作者
Toan Trong Tran,Christopher Elbadawi,Daniel Totonjian,Charlene J. Lobo,Gabriele Grosso,Hyowon Moon,Dirk Englund,Michael J. Ford,Igor Aharonovich,Milos Toth
出处
期刊:Cornell University - arXiv
日期:2016-03-31
被引量:1
摘要
Hexagonal boron nitride (hBN) is an emerging two dimensional material for quantum photonics owing to its large bandgap and hyperbolic properties. Here we report a broad range of multicolor room temperature single photon emissions across the visible and the near infrared spectral ranges from point defects in hBN multilayers. We show that the emitters can be categorized into two general groups, but most likely possess similar crystallographic structure. We further show two approaches for engineering of the emitters using either electron beam irradiation or annealing, and characterize their photophysical properties. The emitters exhibit narrow line widths of sub 10 nm at room temperature, and a short excited state lifetime with high brightness. Remarkably, the emitters are extremely robust and withstand aggressive annealing treatments in oxidizing and reducing environments. Our results constitute the first step towards deterministic engineering of single emitters in 2D materials and hold great promise for the use of defects in boron nitride as sources for quantum information processing and nanophotonics.
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