Effects of High-Energy Electron Irradiation on Quantum Emitters in Hexagonal Boron Nitride

Hanh Ngoc My Duong; Minh Anh Phan Nguyen; Mehran Kianinia; Takeshi Ohshima; Hiroshi Abe; Kenji Watanabe; Takashi Taniguchi; James H. Edgar; Igor Aharonovich; Milos Toth

doi:10.1021/acsami.8b07506

journal article·2018-07-25

Effects of High-Energy Electron Irradiation on Quantum Emitters in Hexagonal Boron Nitride

Hanh Ngoc My Duong, Minh Anh Phan Nguyen, Mehran Kianinia, Takeshi Ohshima, Hiroshi Abe, Kenji Watanabe, Takashi Taniguchi, James H. Edgar, Igor Aharonovich, Milos Toth

ACS Applied Materials & Interfaces· Volume 10· Issue 29

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Abstract

Hexagonal boron nitride (hBN) mono and multilayers are promising hosts for room-temperature single photon emitters (SPEs). In this work we explore high-energy (∼MeV) electron irradiation as a means to generate stable SPEs in hBN. We investigate four types of exfoliated hBN flakes-namely, high-purity multilayers, isotopically pure hBN, carbon-rich hBN multilayers and monolayered material-and find that electron irradiation increases emitter concentrations dramatically in all samples. Furthermore, the engineered emitters are located throughout hBN flakes (not only at flake edges or grain boundaries) and do not require activation by high-temperature annealing of the host material after electron exposure. Our results provide important insights into controlled formation of hBN SPEs and may aid in identification of their crystallographic origin.

Source: openalex_inverted_index · Quality: baseline

Research context

Materials processing

OpenAlex topics: Diamond and Carbon-based Materials Research · Graphene research and applications · Fullerene Chemistry and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Mathematical and Physical Sciences, University of Technology Sydney, Ultimo, New South Wales 2007, Australia

National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan

National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 Japan

Department of Chemical Engineering, Durland Hall, Kansas State University, Manhattan, Kansas 66506, United States

Funding

Ministry of Education, Culture, Sports, Science and Technology · Air Force Office of Scientific Research · Australian Research Council · Japan Society for the Promotion of Science · Office of Naval Research Global

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