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Journal Article
Electrical Control of Single Photon Emitters in WSe2 on a Si Nanopyramid Array with a Negligible Stark Effect
- Authors
- Satyabrat Behera, Jong Sung Moon, Kirlie Iulius Figuera Michal, Jaesung Heo, Jaehyun Lee, Joon-Mo Yang, Je-Hyung Kim, Seon Namgung
- Issue Date
- 2026-03
- Citation
- Nano Letters, v.Early Access, pp.1-8
- ISSN
- 1530-6984
- Publisher
- American Chemical Society
- Language
- English
- Type
- Journal Article
- Abstract
- Single-photon emitters (SPEs) based on two-dimensional (2D) materials have attracted a lot of attention due to their unique benefits such as mechanical flexibility, high quantum yield, and easy integration on a chip. However, the electrical modulation of such emitters at a single-photon level still remains a challenge. Herein, we provide a new route to engineer electrically controllable purified SPEs in a monolayer (1L) WSe2 using a Si nanopyramid structure. The Si nanopyramid structures allow not only the generation of high strain to localize the SPEs but also the application of voltage for electrical modulation. Of particular interest, while our structure modulates the single-photon emission with an applied gate voltage, it does not exhibit unwanted spectral shift for the applied voltage, i.e., a negligible Stark effect, due to the existence of an air gap between the 1L-WSe2 and the nanopyramid. The single photon purity is improved by electrical modulation down to g(2)(0) = 0.06 ± 0.03.
- Keyword
- Single photon emitter, Tungsten diselenide, Si nanopyramid array, Electrical control, Stark effect
- KSP Keywords
- Air-gap, Electrical control, Electrical modulation, Gate voltage, High quantum yield, High strain, Mechanical flexibility, Single photon emitters, Spectral shift, Stark effect, Tungsten diselenide
This work is distributed under the term of Creative Commons License (CCL)
(CC BY ND)
(CC BY ND)
