Strain engineering of quantum confinement in WSe2on nano-roughness glass substrates

• Autor(a) principal: Brito, Caique Serati de
• Data de Publicação: 2022
• Outros Autores: Rabahi, Cesar Ricardo, Teodoro, Marcio Daldin, Franco, Douglas F. [UNESP], Nalin, Marcelo [UNESP], Barcelos, Ingrid D., Gobato, Yara Galvão
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1063/5.0107201; http://hdl.handle.net/11449/240756

Strain engineering is a powerful tool for generating single-photon emitters in monolayer (ML) transition metal dichalcogenides. Here, we report on a simple method for generating sharp emission lines (linewidths ≈ 150-500 μeV) in a monolayer (ML) WSe2 on nano-roughness regions of Tb3+-borogermanate glasses. We performed a polarization-resolved magneto-luminescence study in WSe2/glass at low temperature. Remarkably, we observed several stable and linearly polarized doublet emission peaks in strained regions that are associated with a fine structure splitting due to the anisotropic electron-hole exchange interaction with g-factors of ∼8.4-9.8. Our results indicate that strain engineering on glass substrates is a promising tool for generating quantum dot-like emitters in ML WSe2 for possible integration with photonics systems for quantum information technology.