Berlin 2024 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 36: Poster III

HL 36.6: Poster

Wednesday, March 20, 2024, 18:00–20:30, Poster E

Optoelectronic Control of Interlayer Excitons in MoSe₂/WSe₂ Heterostructures — •Jan-Niklas Heidkamp¹, Johannes Krause¹, Swarup Deb¹, Takashi Taniguchi², Kenji Watanabe², Rico Schwartz¹, and Tobias Korn¹ — ¹Institute of Physics, University of Rostock, Rostock, Germany — ²National Institute for Material Science, Tsukuba, Japan

Transition-metal dichalcogenide (TMDC) heterostructures have recently garnered significant scientific interest due to their unique optical properties, including the emergence of tightly bound intralayer excitons and long-lived interlayer excitons. In this study, we investigate the photoluminescence (PL) associated with interlayer excitons in heterostructures comprising molybdenum diselenide (MoSe₂) and tungsten diselenide (WSe₂). We aim to manipulate these quasiparticles using in-plane electric fields and modulation of the charge carrier density applied via microstructured electrodes and a potential difference across the heterostack. These experimental investigations provide valuable insights into the optical properties and behavior of interlayer excitons in TMDC heterostructures, offering prospects for their potential application in optoelectronic devices and photonics.

Keywords: TMDC; heterostructures; optoelectronic control; interlayer excitons; electric field