Seminarium Advanced Methods of Semiconductor Research – wtorek 28 kwietnia 2026
We cordially invite you to Advanced Methods of Semiconductor Research Seminar on Tuesday 28th of April 2026 at 13:15 in room 321, building A-1, where there will be delivered a lecture:
Excitonic buffet – rare exciton flavors in few-layer transition-metal dichalcogenides
by Dr. Michał Rygała
from Department of Experimental Physics, Wrocław Tech
This presentation is related to the approaching end of the employment contract at Wrocław Tech.
The lecture abstract is attached below.
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Natural-stacked transition-metal dichalcogenides, such as MoSe2 and WSe2 are rich in unconventional excitonic states formed within and between the layers of these materials. Based on the spatial direction of the electron-hole dipole – whether it is confined to one layer of the material or formed between two or more layers – the excitons have different capabilities for tunability with an external electric field through the Stark effect. Having them all in one system makes for a perfect opportunity for optical studies of exciton formation and interactions in contemporary materials. During the presentation, I will share the results of my work at Laboratoire National des Champs Magnetiques Intenses in Toulouse, France, regarding 2H-stacked MoSe2 bilayers and WSe2 bi-, tri-, and quadlayers, with the interpretation of observed effects based on comparison to DFT calculations and already published data. [1] [2]
[1] J. Jasiński, et al, Nature Communications, 16, 1382 (2025)
[2] Z. Lian, et al, Nature Communications, 14, 5042 (2023)