<p>The functionalization of atomically-thin transition metal dichalcogenides (TMDs) with organic molecules is a promising approach for realizing nanoscale optoelectronic devices with tailored functionalities, such as quantum light generation or <i>p</i>-<i>n</i> junctions. However, achieving precise control over the molecules’ positioning on the 2D material remains a significant challenge. Here, we overcome the limitations of solution- and vapor-deposition methods and use a DNA origami placement technique to spatially arrange thiol molecules on a chip surface at the single-molecule level with high assembly yields. We successfully integrated MoS<sub>2</sub> monolayers with micron-scale thiol–origami patterns, creating quantum-emitting sites from thiol-induced localized excitons in MoS<sub>2</sub>. Our work lays a foundation for the chemical control of quantum emitters in atomically-thin semiconductors and enables the design and production of ultracompact 2D devices for quantum technologies.</p>

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Deterministic quantum light emitters in DNA origami–engineered molecule–MoS₂ hybrids

  • Zhijie Li,
  • Shen Zhao,
  • Iuliia Melchakova,
  • Elisabeth Erber,
  • Christoph Sikeler,
  • Kenji Watanabe,
  • Takashi Taniguchi,
  • Tim Liedl,
  • Alexander Högele,
  • Anvar S. Baimuratov,
  • Irina V. Martynenko

摘要

The functionalization of atomically-thin transition metal dichalcogenides (TMDs) with organic molecules is a promising approach for realizing nanoscale optoelectronic devices with tailored functionalities, such as quantum light generation or p-n junctions. However, achieving precise control over the molecules’ positioning on the 2D material remains a significant challenge. Here, we overcome the limitations of solution- and vapor-deposition methods and use a DNA origami placement technique to spatially arrange thiol molecules on a chip surface at the single-molecule level with high assembly yields. We successfully integrated MoS2 monolayers with micron-scale thiol–origami patterns, creating quantum-emitting sites from thiol-induced localized excitons in MoS2. Our work lays a foundation for the chemical control of quantum emitters in atomically-thin semiconductors and enables the design and production of ultracompact 2D devices for quantum technologies.