【161】Raman spectroscopy as an ideal tool for probing phonon-carrier interactions in low dimensional materials

8 Sept 2023, 12:00
15m
Aula 033

Aula 033

Talk Condensed Matter Physics (KOND) Condensed Matter Physics (KOND)

Speaker

Mirjana Dimitrievska (EMPA)

Description

Low dimensional materials (1D and 2D) are promising candidates as building blocks of future electronics and optoelectronics. Controllable bandgap, strong light-matter interaction, sub-nanometer thickness, and high carrier mobility are among their favorable properties for electronic and optical applications. Comprehensive characterization of these materials is a crucial learning step toward their reliable incorporation in devices. In this work, we will discuss how temperature-dependent, multiwavelength excitation Raman spectroscopy could be effectively used to probe the interaction between the 1D graphene nanoribbons and various substrates (metal, oxides, semiconductors), including the effects on the phonon-carrier interaction, which are crucial for the device performance.

Author

Mirjana Dimitrievska (EMPA)

Co-authors

Mr Angel Labordet Alvarez (EMPA) Gabriela Borin Barin (Empa) Roman Fasel (Empa) Michel Calame (EMPA)

Presentation materials

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