Plasmonic Hot Spots on Topological Insulator Nanotips for Enhancing Light Interaction with MoS2 Atomic Monolayer [invited]
Topological insulators (TIs) have unique topologically protected conducting surface and insulating bulk states, which provide a novel platform for plasmonic excitation and related nanoscale functional devices. Exploring plasmon‐enhanced interactions between light and atomic‐layered semiconductors in...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2025-08-01
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| Series: | Advanced Photonics Research |
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| Online Access: | https://doi.org/10.1002/adpr.202400232 |
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| author | Yiqiao Zhang Hua Lu Zengji Yue Mingwen Zhang Xuetao Gan Jianlin Zhao |
| author_facet | Yiqiao Zhang Hua Lu Zengji Yue Mingwen Zhang Xuetao Gan Jianlin Zhao |
| author_sort | Yiqiao Zhang |
| collection | DOAJ |
| description | Topological insulators (TIs) have unique topologically protected conducting surface and insulating bulk states, which provide a novel platform for plasmonic excitation and related nanoscale functional devices. Exploring plasmon‐enhanced interactions between light and atomic‐layered semiconductors in TI nanostructures is particularly significant for optoelectronic applications of TIs. Herein, the Sb2Te3 TI nanotips are fabricated by using focused ion beam lithography technique and the plasmonic hot spot behaviors are investigated on the TI nanotips. The numerical simulation shows that there exists a distinct reinforcement of light field on the Sb2Te3 TI nanotips, which stems from the TI‐based plasmonic hot spot effect. Moreover, the obvious enhancement of photoluminescence (PL) emission from a molybdenum disulfide (MoS2) monolayer integrated onto the Sb2Te3 TI nanotips is experimentally observed. The PL intensity of MoS2 layer on the Sb2Te3 nanotips can be effectively improved by about five‐fold due to the plasmonic hot spot‐induced field reinforcement when compared with that of MoS2 without the Sb2Te3 nanotips. These results will open a new avenue for optoelectronic applications of TIs, especially in nanoscale enhanced PL emission. |
| format | Article |
| id | doaj-art-94a19d7400df40e28a3698d11a990914 |
| institution | Matheson Library |
| issn | 2699-9293 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Photonics Research |
| spelling | doaj-art-94a19d7400df40e28a3698d11a9909142025-08-04T08:22:02ZengWiley-VCHAdvanced Photonics Research2699-92932025-08-0168n/an/a10.1002/adpr.202400232Plasmonic Hot Spots on Topological Insulator Nanotips for Enhancing Light Interaction with MoS2 Atomic Monolayer [invited]Yiqiao Zhang0Hua Lu1Zengji Yue2Mingwen Zhang3Xuetao Gan4Jianlin Zhao5MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, and Shaanxi Key Laboratory of Optical Information Technology School of Physical Science and Technology Northwestern Polytechnical University Xi'an 710129 ChinaMOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, and Shaanxi Key Laboratory of Optical Information Technology School of Physical Science and Technology Northwestern Polytechnical University Xi'an 710129 ChinaSchool of Artificial Intelligence Science and Technology University of Shanghai for Science and Technology Shanghai 200093 ChinaMOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, and Shaanxi Key Laboratory of Optical Information Technology School of Physical Science and Technology Northwestern Polytechnical University Xi'an 710129 ChinaMOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, and Shaanxi Key Laboratory of Optical Information Technology School of Physical Science and Technology Northwestern Polytechnical University Xi'an 710129 ChinaMOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, and Shaanxi Key Laboratory of Optical Information Technology School of Physical Science and Technology Northwestern Polytechnical University Xi'an 710129 ChinaTopological insulators (TIs) have unique topologically protected conducting surface and insulating bulk states, which provide a novel platform for plasmonic excitation and related nanoscale functional devices. Exploring plasmon‐enhanced interactions between light and atomic‐layered semiconductors in TI nanostructures is particularly significant for optoelectronic applications of TIs. Herein, the Sb2Te3 TI nanotips are fabricated by using focused ion beam lithography technique and the plasmonic hot spot behaviors are investigated on the TI nanotips. The numerical simulation shows that there exists a distinct reinforcement of light field on the Sb2Te3 TI nanotips, which stems from the TI‐based plasmonic hot spot effect. Moreover, the obvious enhancement of photoluminescence (PL) emission from a molybdenum disulfide (MoS2) monolayer integrated onto the Sb2Te3 TI nanotips is experimentally observed. The PL intensity of MoS2 layer on the Sb2Te3 nanotips can be effectively improved by about five‐fold due to the plasmonic hot spot‐induced field reinforcement when compared with that of MoS2 without the Sb2Te3 nanotips. These results will open a new avenue for optoelectronic applications of TIs, especially in nanoscale enhanced PL emission.https://doi.org/10.1002/adpr.202400232molybdenum disulfidephotoluminescencesurface plasmonstopological insulators |
| spellingShingle | Yiqiao Zhang Hua Lu Zengji Yue Mingwen Zhang Xuetao Gan Jianlin Zhao Plasmonic Hot Spots on Topological Insulator Nanotips for Enhancing Light Interaction with MoS2 Atomic Monolayer [invited] Advanced Photonics Research molybdenum disulfide photoluminescence surface plasmons topological insulators |
| title | Plasmonic Hot Spots on Topological Insulator Nanotips for Enhancing Light Interaction with MoS2 Atomic Monolayer [invited] |
| title_full | Plasmonic Hot Spots on Topological Insulator Nanotips for Enhancing Light Interaction with MoS2 Atomic Monolayer [invited] |
| title_fullStr | Plasmonic Hot Spots on Topological Insulator Nanotips for Enhancing Light Interaction with MoS2 Atomic Monolayer [invited] |
| title_full_unstemmed | Plasmonic Hot Spots on Topological Insulator Nanotips for Enhancing Light Interaction with MoS2 Atomic Monolayer [invited] |
| title_short | Plasmonic Hot Spots on Topological Insulator Nanotips for Enhancing Light Interaction with MoS2 Atomic Monolayer [invited] |
| title_sort | plasmonic hot spots on topological insulator nanotips for enhancing light interaction with mos2 atomic monolayer invited |
| topic | molybdenum disulfide photoluminescence surface plasmons topological insulators |
| url | https://doi.org/10.1002/adpr.202400232 |
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