Enhanced absorption of CVD grown molybdenum disulfide monolayers via surface plasmon resonance with silver nano-triangles
© 2019 Optical Society of America. Transient reflection was performed on large-area chemical vapor deposition (CVD) grown monolayer MoS2 flakes with silver nano-triangles coated on the surface to characterize its modifications to the optical properties of MoS2. Broadband transient reflection was car...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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The Optical Society
2021
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| Online Access: | https://hdl.handle.net/1721.1/132302 |
| _version_ | 1811068468889387008 |
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| author | Chan, CCS Li, Q Lai, Y Kong, J Wong, KS |
| author_facet | Chan, CCS Li, Q Lai, Y Kong, J Wong, KS |
| author_sort | Chan, CCS |
| collection | MIT |
| description | © 2019 Optical Society of America. Transient reflection was performed on large-area chemical vapor deposition (CVD) grown monolayer MoS2 flakes with silver nano-triangles coated on the surface to characterize its modifications to the optical properties of MoS2. Broadband transient reflection was carried out over a range of different pump wavelengths to tune in and out of the plasmonic resonance band of the nano-triangles. Large enhancement in transient reflectivity was observed, which approximately followed the plasmon resonance spectrum of the nano-triangles. Finite-difference time-domain simulationswere performed to verify that there is an increased absorption due to local surface plasmon-induced near-field enhancements. We also report observation of the dynamics of the MoS2 exciton bleaching bands, which showed subtle differences in recombination dynamics related to the exciton-plasmon coupling strength for excitation on-resonance and off-resonance at the silver nano-triangles plasmonic band. |
| first_indexed | 2024-09-23T07:56:28Z |
| format | Article |
| id | mit-1721.1/132302 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T07:56:28Z |
| publishDate | 2021 |
| publisher | The Optical Society |
| record_format | dspace |
| spelling | mit-1721.1/1323022021-09-21T04:09:46Z Enhanced absorption of CVD grown molybdenum disulfide monolayers via surface plasmon resonance with silver nano-triangles Chan, CCS Li, Q Lai, Y Kong, J Wong, KS © 2019 Optical Society of America. Transient reflection was performed on large-area chemical vapor deposition (CVD) grown monolayer MoS2 flakes with silver nano-triangles coated on the surface to characterize its modifications to the optical properties of MoS2. Broadband transient reflection was carried out over a range of different pump wavelengths to tune in and out of the plasmonic resonance band of the nano-triangles. Large enhancement in transient reflectivity was observed, which approximately followed the plasmon resonance spectrum of the nano-triangles. Finite-difference time-domain simulationswere performed to verify that there is an increased absorption due to local surface plasmon-induced near-field enhancements. We also report observation of the dynamics of the MoS2 exciton bleaching bands, which showed subtle differences in recombination dynamics related to the exciton-plasmon coupling strength for excitation on-resonance and off-resonance at the silver nano-triangles plasmonic band. 2021-09-20T18:21:45Z 2021-09-20T18:21:45Z 2021-01-08T19:06:03Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/132302 en 10.1364/OSAC.2.001401 OSA Continuum Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf The Optical Society OSA Publishing |
| spellingShingle | Chan, CCS Li, Q Lai, Y Kong, J Wong, KS Enhanced absorption of CVD grown molybdenum disulfide monolayers via surface plasmon resonance with silver nano-triangles |
| title | Enhanced absorption of CVD grown molybdenum disulfide monolayers via surface plasmon resonance with silver nano-triangles |
| title_full | Enhanced absorption of CVD grown molybdenum disulfide monolayers via surface plasmon resonance with silver nano-triangles |
| title_fullStr | Enhanced absorption of CVD grown molybdenum disulfide monolayers via surface plasmon resonance with silver nano-triangles |
| title_full_unstemmed | Enhanced absorption of CVD grown molybdenum disulfide monolayers via surface plasmon resonance with silver nano-triangles |
| title_short | Enhanced absorption of CVD grown molybdenum disulfide monolayers via surface plasmon resonance with silver nano-triangles |
| title_sort | enhanced absorption of cvd grown molybdenum disulfide monolayers via surface plasmon resonance with silver nano triangles |
| url | https://hdl.handle.net/1721.1/132302 |
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