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, achieving single-photon emission 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.
@article{arxiv.2501.12029,
title = {Deterministic and Scalable Quantum Light Generation in DNA Origami-Programmed Organic Molecule-MoS$_2$ Monolayer Hybrids},
author = {Shen Zhao and Zhijie Li and Elisabeth Erber and Anna Altunina and Christoph Sikeler and Kenji Watanabe and Takashi Taniguchi and Anvar S. Baimuratov and Tim Liedl and Alexander Högele and Irina V. Martynenko},
journal= {arXiv preprint arXiv:2501.12029},
year = {2025}
}