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Deterministic quantum light emitters in DNA origami-engineered molecule-MoS₂ hybrids.

Zhijie Li1, Shen Zhao2, Iuliia Melchakova3

  • 1Faculty of Physics and Center for NanoScience (CeNS), Ludwig-Maximilians-Universität München, Geschwister-Scholl-Platz 1, 80539, Munich, Germany.

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Researchers precisely placed organic molecules on 2D materials using DNA origami, creating quantum emitters in molybdenum disulfide (MoS2) for advanced 2D devices.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Quantum Technology

Background:

  • Atomically-thin transition metal dichalcogenides (TMDs) functionalization with organic molecules is key for nanoscale optoelectronic devices.
  • Precise spatial control of molecules on 2D materials is a major challenge for current methods.

Purpose of the Study:

  • To develop a method for precise spatial arrangement of molecules on 2D materials.
  • To create controlled quantum emitters in TMDs for quantum technologies.

Main Methods:

  • Utilized a DNA origami placement technique for single-molecule level arrangement of thiol molecules.
  • Integrated molybdenum disulfide (MoS2) monolayers with thiol-origami patterns on a chip surface.

Main Results:

  • Achieved high assembly yields of thiol molecules with precise spatial control.
  • Successfully created quantum-emitting sites through thiol-induced localized excitons in MoS2.
  • Demonstrated integration of MoS2 monolayers with designed molecular patterns.

Conclusions:

  • The DNA origami technique overcomes limitations of traditional deposition methods for molecule placement.
  • This approach enables chemical control over quantum emitters in atomically-thin semiconductors.
  • Paves the way for designing and producing ultracompact 2D devices for quantum technologies.