Nanoscale Manipulation of Exciton–Trion Interconversion in a MoSe2 Monolayer via Tip-Enhanced Cavity-Spectroscopy
SCIE
SCOPUS
- Title
- Nanoscale Manipulation of Exciton–Trion Interconversion in a MoSe2 Monolayer via Tip-Enhanced Cavity-Spectroscopy
- Authors
- Kim, Su Jin; Lee, Hyun Seok; Suh, Yung Doug; Park, Kyoung-Duck; Kang, Mingu; Joo, Huitae; Koo, Yeonjeong; Lee, Hyeongwoo
- Date Issued
- 2023-12
- Publisher
- American Chemical Society
- Abstract
- Emerging light-matter interactions in metal-semiconductor hybrid platforms have attracted considerable attention due to their potential applications in optoelectronic devices. Here, we demonstrate plasmon-induced near-field manipulation of trionic responses in a MoSe2 monolayer using tip-enhanced cavity-spectroscopy (TECS). The surface plasmon-polariton mode on the Au nanowire can locally manipulate the exciton (X-0) and trion (X-) populations of MoSe2. Furthermore, we reveal that surface charges significantly influence the emission and interconversion processes of X-0 and X-. In the TECS configuration, the localized plasmon significantly affects the distributions of X-0 and X- due to the modified radiative decay rate. Additionally, within the TECS cavity, the electric doping effect and hot electron generation enable dynamic interconversion between X-0 and X- at the nanoscale. This work advances our understanding of plasmon-exciton-hot electron interactions in metal-semiconductor-metal hybrid structures, providing a foundation for an optimal trion-based nano-optoelectronic platform.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/121407
- DOI
- 10.1021/acs.nanolett.3c03920
- ISSN
- 1530-6984
- Article Type
- Article
- Citation
- Nano Letters, vol. 24, no. 1, page. 279 - 286, 2023-12
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