The Japan Society of Applied Physics

2023 International Conference on Solid State Devices and Materials

2023 International Conference on Solid State Devices and Materials

Sep 5, 2023 - Oct 31, 2023
Nagoya Congress Center

9:45 AM - 10:00 AM

[H-3-03] Exciton-Plasmon Coupling and Nonradiative Energy Transfer in TMDCs/Quantum Dots Hybrid Emitter

○James Singh Konthoujam1, Yen-Shou Lin1,2, Yi-Hua Pai2, Chiao-Yun Chang1, Yu-Wei Zhang1, Shih-Yen Lin1, Hao-Chung Kuo1,2, Min-Hsiung Shih1,2 (1. Academia Sinica (Taiwan), 2. National Yang Ming Chiao Tung University (Taiwan))

https://doi.org/10.7567/SSDM.2023.H-3-03

In this study, we report a considerable improvement in the exciton transition rate of CdSe/ZnS QDs after integrating with Au nanorods and TMDCs monolayer. We found a photoluminescence quenching of QDs near WSe2 monolayer owing to the enhanced energy transfer between QDs and WSe2 excitons mediated by the Au nanorods surface plasmon. The QDs exciton lifetime is found to be decreased from 15.09 ns to 8.94 ns indicating enhanced energy transfer between the QDs and the WSe2 monolayer near Au nanorods. As a result, the exciton decay rate of QDs is significantly increased, which is beneficial for optical communication.