Generation of High-Density Quantum Emitters in High-Quality, Exfoliated Hexagonal Boron Nitride.
- Publisher:
- American Chemical Society
- Publication Type:
- Journal Article
- Citation:
- ACS Applied Materials and Interfaces, 2021, 13, (39), pp. 47283-47292
- Issue Date:
- 2021-10-06
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| acsami.1c14863.pdf | 10.81 MB |
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Single-photon emitters in hexagonal boron nitride (hBN) are promising constituents for integrated quantum photonics. Specifically, engineering these emitters in large-area, high-quality, exfoliated hBN is needed for their incorporation into photonic devices and two dimensional heterostructures. Here, we report on two different routes to generate high-density quantum emitters with excellent optical properties-including high brightness and photostability. We study in detail high-temperature annealing and plasma treatments as an efficient means to generate dense emitters. We show that both an optimal oxygen flow rate and annealing temperature are required for the formation of high-density quantum emitters. In parallel, we demonstrate that the plasma treatment in various environments, followed by standard annealing is also an effective route for emission engineering. Our work provides vital information for the fabrication of quantum emitters in high-quality, exfoliated hBN flakes and paves the way toward the integration of the quantum emitters with photonic devices.
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