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3 October 2022 Dark-exciton driven energy funneling into dielectric inhomogeneities in two-dimensional semiconductors
Haowen Su, Ding Xu, Shan-Wen Cheng, Baichang Li, Song Liu, Kenji Watanabe, Takashi Taniguchi, Timothy C. Berkelbach, James Hone, Milan Delor
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Proceedings Volume PC12199, Physical Chemistry of Semiconductor Materials and Interfaces XXI; PC1219904 (2022) https://doi.org/10.1117/12.2635888
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States
Abstract
We spatiotemporally resolve exciton transport in two-dimensional transition metal dichalcogenides (TMD) in which we incorporate local dielectric inhomogeneities known as nanobubbles. We observe highly efficient exciton funneling in these dielectric inhomogeneities, a process entirely driven by momentum-indirect (dark) excitons whose energies are much more sensitive to dielectric perturbations than bright excitons.
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Haowen Su, Ding Xu, Shan-Wen Cheng, Baichang Li, Song Liu, Kenji Watanabe, Takashi Taniguchi, Timothy C. Berkelbach, James Hone, and Milan Delor "Dark-exciton driven energy funneling into dielectric inhomogeneities in two-dimensional semiconductors", Proc. SPIE PC12199, Physical Chemistry of Semiconductor Materials and Interfaces XXI, PC1219904 (3 October 2022); https://doi.org/10.1117/12.2635888
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KEYWORDS
Dielectrics
Excitons
Semiconductors
Environmental sensing
Microscopy
Optical microscopy
Optoelectronics
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