Electronic band alignments in transition metal dichalcogenides heterobilayers under optical excitation

Elyse Barre

doi:10.1117/12.3001966

9 March 2024 Electronic band alignments in transition metal dichalcogenides heterobilayers under optical excitation

Elyse Barre

Proceedings Volume PC12895, Quantum Sensing and Nano Electronics and Photonics XX; PC128951A (2024) https://doi.org/10.1117/12.3001966
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

Interlayer excitons (IXs) in transition metal dichalcogenides are promising for applications in opto-electronics and quantum technologies. They have strongly tunable energy through external electric fields and can be confined to specific moiré sites, which are adjustable through twist angles. IX emission exhibits a strong blueshift with optical pumping densities which has been correlated to exciton-exciton interaction [1]. By directly imaging the IX with time-resolved angle-resolved photoemission spectroscopy (trARPES), we can attribute a IX blueshift to a change in the band alignment created from the charge transfer associated with IX. This study complements optical studies and informs our understanding of IX-IX interactions. [1] Nagler, P., et al. 2D Materials 4, 2, 025112 (2017).

Conference Presentation

Citation Download Citation

Elyse Barre "Electronic band alignments in transition metal dichalcogenides heterobilayers under optical excitation", Proc. SPIE PC12895, Quantum Sensing and Nano Electronics and Photonics XX, PC128951A (9 March 2024); https://doi.org/10.1117/12.3001966

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