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EACON 2020

EurAsian Conference on Nanophotonics

April 6 – 9, 2020 / Jena, Germany

Andrey Turchanin

Friedrich Schiller University Jena, Germany
Abbe Centre of Photonics, Jena, Germany

Controlled growth of transition metal dichalcogenide monolayers for applications in nanoelectronic and nanophotonic devices

Controlling the flow rate of precursors is highly essential for the growth of high quality monolayer crystals of transition metal dichalcogenides (TMDs) by chemical vapor deposition. Thus, introduction of an excess quantity of precursors affects reproducibility of the growth process and results in the unwanted contaminants. Here we demonstrate the use of Knudsen-type effusion cells for controlled delivery of the solid state precursors for the large area, high density, size-controlled and highly reproducible growth of monolayer TMD crystals [1]. The size of the crystals can be tuned between 10 – 200 µm. We demonstrate synthesis of MoS2, WS2, MoSe2 and WSe2 monolayer crystals as well as MoSe2-WSe2 lateral heterostructures and characterize them by optical microscopy, atomic force microscopy, high resolution transmission electron microscopy, Raman spectroscopy and mapping, photoluminescence spectroscopy, second harmonic generation and electrical transport measurements. [1-6] We show that the synthesized monolayers possess a high crystalline, optical and electrical quality based on their single crystalline nature and low defect density [2]. We demonstrate their implementation in novel field-effect and nanophotonic devices and discuss an influence of the point defect density on their functional characteristics [3-5]. Moreover, we present a novel synthetic route for integration of TMDs into the lateral heterostructures with other 2D materials [6].

(a-d) Optical microscopy and (e-h) high resolution transmission electron microscopy (Ute Kaiser, University of Ulm) of various TMDs and TMD heterostructures synthesized in our laboratory.


  1. A. George et al., J. Phys. Mater. 2 (2019) 016001.
  2. S. Shree et al., 2D Mater. 7 (2020) 015011
  3. T. Bucher et al., ACS Photonics 6 (2019) 1002.
  4. R. Meyer et al., ACS Photonics 6 (2019) 1191.
  5. F. J. F. Löchner et al., Opt. Express 27 (2019) 35475.
  6. A. Winter et al., Carbon 128 (2018) 106.

Further Talks

Andrea Csáki

Microfludic Synthesis of plasmonic Nanoparticles for Sensing Applications

Andrey Turchanin

Controlled growth of transition metal dichalcogenide monolayers for applications in nanoelectronic and nanophotonic devices

Chi Chen

Near Field Spectroscopic Imaging: from Hard to Soft Materials

Chi-How Peng

Cobalt mediated controlled/living radical polymerization: from mechanism understanding to materials application

Chun-Hong Kuo

Bridging Energy and Chemistry via Nanoarchitectonic Engineering at Atomic Scale

Falk Eilenberger

Integration of two-dimensional materials in optical systems for nonlinear optics, sensing, and single photon sources

Frank Setzpfandt

Nonlinear frequency conversion in nanostructured optical systems for application in quantum photonics

Heng-Liang Wu

Controlling the Oxidation State of Cu Electrode and Reaction Intermediates for Electrochemical CO2 Reduction to Ethylene

Kien-Voon Kong

Direct Observation of Reaction Intermediates of Metal-based Therapeutic Agents in Single Living Cell Using TERS

Maria Wächtler

Quantum confined semiconductor nanostructures in light-driven catalysis

Martin Presselt

Supramolecular Control of Optical and Electronical Properties of Two-Dimensional Dye Layers

Po-Chiao Lin

New Environment Sensitive Fluorophores with Color-Tailored Emission: In Vivo Monitoring of Carbonic Anhydrases Expression on Growth of Larval Zebrafish

Shangjr (Felix) Gwo

Plasmonic Metasurface-Enhanced Linear and Nonlinear Processes in Two-Dimensional Semiconductors

Ta-Jen Yen

Empowering Bilayer MoS2 by Engineered Plasmonic Nanostructures for Optoelectronic Applications

Tiow-Gan Ong

Carbodicarbene, Carbogenic Maverick, Not a Moderate!

Volker Deckert

Plasmon Enhanced Probe Spectroscopies – Structural Investigation of Nanoscale Objects

Yi-Tsu Chan

Molecular self-assembly methodology for rational construction of metallosupramolecules with high structural complexity

Yian Tai

Toward a universal polymeric material for electrode buffer layers in organic optoelectronics

Yu-Chieh Cheng

Kirigami-based soft robots with light-responsive properties

Yu-Jung Lu

Controlling Light-matter Interactions at Nanoscale with Plasmonics: From Spontaneous Emission to Lasing