期刊
ACS PHOTONICS
卷 8, 期 2, 页码 669-677出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.0c01907
关键词
2D materials; molybdenum disulfide; quantum emitter; He-ion irradiation; defect generation; vdW heterostructure
类别
资金
- Deutsche Forschungsgemeinschaft (DFG) through the German Excellence Strategy via the Munich Center for Quantum Science and Technology (MCQST) [EXC-2111-390814868, EXC 2089/1-390776260]
- TUM International Graduate School of Science and Engineering (IGSSE)
- European Union's Horizon 2020 research and innovation program [820423]
- German Federal Ministry of Education and Research via the funding program Photonics Research Germany [13N14846]
- Bavarian Academy of Sciences and Humanities
- Alexander von Humboldt Foundation
- Swedish Research Council [2016-06122]
- Swedish Research Council (VR) via the starting Grant HyQRep [2018-04812]
- Goran Gustafsson Foundation (SweTeQ)
- Deutsche Forschungsgemeinschaft [RTG 2247]
- Elemental Strategy Initiative by the MEXT, Japan
- CREST, JST [JPMJCR15F3]
- Vinnova [2018-04812] Funding Source: Vinnova
- Swedish Research Council [2018-04812] Funding Source: Swedish Research Council
The study demonstrates the on-demand creation and positioning of photon emitters in MoS2, showing anti-bunching behavior and high probabilities for clean photon emission. By using helium-ion irradiation, the research achieves the generation of photon emitters at specific positions, offering new methods for the yield and properties of photon emitters.
We demonstrate the on-demand creation and positioning of photon emitters in atomically thin MoS2 with very narrow ensemble broadening and negligible background luminescence. Focused helium-ion beam irradiation creates 100s to 1000s of such mono-typical emitters at specific positions in the MoS2 monolayers. Individually measured photon emitters show anti-bunching behavior with a g(2)(0) similar to 0.23 and 0.27. From a statistical analysis, we extract the creation yield of the He-ion induced photon emitters in MoS2 as a function of the exposed area, as well as the total yield of single emitters as a function of the number of He ions when single spots are irradiated by He ions. We reach probabilities as high as 18% for the generation of individual and spectrally clean photon emitters per irradiated single site. Our results firmly establish 2D materials as a platform for photon emitters with unprecedented control of position as well as photophysical properties owing to the all-interfacial nature.
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