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Ultrafast Formation of Charge Transfer Trions at Molecular‐Functionalized 2D MoS2 Interfaces.

Authors :
Jing, Yuancheng
Liang, Kangkai
Muir, Nicole S.
Zhou, Hao
Li, Zhehao
Palasz, Joseph M.
Sorbie, Jonathan
Wang, Chenglai
Cushing, Scott K
Kubiak, Clifford P.
Sofer, Zdeněk
Li, Shaowei
Xiong, Wei
Source :
Angewandte Chemie International Edition. 7/22/2024, Vol. 63 Issue 30, p1-9. 9p.
Publication Year :
2024

Abstract

In this work, we investigate trion dynamics occurring at the heterojunction between organometallic molecules and a monolayer transition metal dichalcogenide (TMD) with transient electronic sum frequency generation (tr‐ESFG) spectroscopy. By pumping at 2.4 eV with laser pulses, we have observed an ultrafast hole transfer, succeeded by the emergence of charge‐transfer trions. This observation is facilitated by the cancellation of ground state bleach and stimulated emission signals due to their opposite phases, making tr‐ESFG especially sensitive to the trion formation dynamics. The presence of charge‐transfer trion at molecular functionalized TMD monolayers suggests the potential for engineering the local electronic structures and dynamics of specific locations on TMDs and offers a potential for transferring unique electronic attributes of TMD to the molecular layers. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
14337851
Volume :
63
Issue :
30
Database :
Academic Search Index
Journal :
Angewandte Chemie International Edition
Publication Type :
Academic Journal
Accession number :
178531791
Full Text :
https://doi.org/10.1002/anie.202405123