Manipulating nonlinear emission and cooperative effect of CdSe/ZnS quantum dots by coupling to a silver nanorod complex cavity
Colloidal semiconductor quantum dots have three-dimensional confined excitons with large optical oscillator strength and gain. The surface plasmons of metallic nanostructures offer an efficient tool to enhance exciton-exciton coupling and excitation energy transfer at appropriate geometric arrangeme...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2014
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| Online Access: | https://hdl.handle.net/10356/97679 http://hdl.handle.net/10220/19597 |
| _version_ | 1826111063741956096 |
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| author | Nan, Fan Cheng, Zi-Qiang Wang, Ya-Lan Zhang, Qing Zhou, Li Yang, Zhong-Jian Zhong, Yu-Ting Liang, Shan Xiong, Qihua Wang, Qu-Quan |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Nan, Fan Cheng, Zi-Qiang Wang, Ya-Lan Zhang, Qing Zhou, Li Yang, Zhong-Jian Zhong, Yu-Ting Liang, Shan Xiong, Qihua Wang, Qu-Quan |
| author_sort | Nan, Fan |
| collection | NTU |
| description | Colloidal semiconductor quantum dots have three-dimensional confined excitons with large optical oscillator strength and gain. The surface plasmons of metallic nanostructures offer an efficient tool to enhance exciton-exciton coupling and excitation energy transfer at appropriate geometric arrangement. Here, we report plasmon-mediated cooperative emissions of approximately one monolayer of ensemble CdSe/ZnS quantum dots coupled with silver nanorod complex cavities at room temperature. Power-dependent spectral shifting, narrowing, modulation, and amplification are demonstrated by adjusting longitudinal surface plasmon resonance of silver nanorods, reflectivity and phase shift of silver nanostructured film, and mode spacing of the complex cavity. The underlying physical mechanism of the nonlinear excitation energy transfer and nonlinear emissions are further investigated and discussed by using time-resolved photoluminescence and finite-difference time-domain numerical simulations. Our results suggest effective strategies to design active plasmonic complex cavities for cooperative emission nanodevices based on semiconductor quantum dots. |
| first_indexed | 2024-10-01T02:44:48Z |
| format | Journal Article |
| id | ntu-10356/97679 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:44:48Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | ntu-10356/976792023-02-28T19:32:48Z Manipulating nonlinear emission and cooperative effect of CdSe/ZnS quantum dots by coupling to a silver nanorod complex cavity Nan, Fan Cheng, Zi-Qiang Wang, Ya-Lan Zhang, Qing Zhou, Li Yang, Zhong-Jian Zhong, Yu-Ting Liang, Shan Xiong, Qihua Wang, Qu-Quan School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences DRNTU::Science::Physics Colloidal semiconductor quantum dots have three-dimensional confined excitons with large optical oscillator strength and gain. The surface plasmons of metallic nanostructures offer an efficient tool to enhance exciton-exciton coupling and excitation energy transfer at appropriate geometric arrangement. Here, we report plasmon-mediated cooperative emissions of approximately one monolayer of ensemble CdSe/ZnS quantum dots coupled with silver nanorod complex cavities at room temperature. Power-dependent spectral shifting, narrowing, modulation, and amplification are demonstrated by adjusting longitudinal surface plasmon resonance of silver nanorods, reflectivity and phase shift of silver nanostructured film, and mode spacing of the complex cavity. The underlying physical mechanism of the nonlinear excitation energy transfer and nonlinear emissions are further investigated and discussed by using time-resolved photoluminescence and finite-difference time-domain numerical simulations. Our results suggest effective strategies to design active plasmonic complex cavities for cooperative emission nanodevices based on semiconductor quantum dots. Published version 2014-06-10T02:18:51Z 2019-12-06T19:45:22Z 2014-06-10T02:18:51Z 2019-12-06T19:45:22Z 2014 2014 Journal Article Nan, F., Cheng, Z.-Q., Wang, Y.-L., Zhang, Q., Zhou, L., Yang, Z.-J., et al. (2014). Manipulating Nonlinear Emission and Cooperative Effect of CdSe/ZnS Quantum Dots by Coupling to a Silver Nanorod Complex Cavity. Scientific Reports, 4. 4839-. 2045-2322 https://hdl.handle.net/10356/97679 http://hdl.handle.net/10220/19597 10.1038/srep04839 24787617 en Scientific reports This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. The images in this article are included in the article's Creative Commons license, unless indicated otherwise in the image credit; if the image is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the image. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/ application/pdf |
| spellingShingle | DRNTU::Science::Physics Nan, Fan Cheng, Zi-Qiang Wang, Ya-Lan Zhang, Qing Zhou, Li Yang, Zhong-Jian Zhong, Yu-Ting Liang, Shan Xiong, Qihua Wang, Qu-Quan Manipulating nonlinear emission and cooperative effect of CdSe/ZnS quantum dots by coupling to a silver nanorod complex cavity |
| title | Manipulating nonlinear emission and cooperative effect of CdSe/ZnS quantum dots by coupling to a silver nanorod complex cavity |
| title_full | Manipulating nonlinear emission and cooperative effect of CdSe/ZnS quantum dots by coupling to a silver nanorod complex cavity |
| title_fullStr | Manipulating nonlinear emission and cooperative effect of CdSe/ZnS quantum dots by coupling to a silver nanorod complex cavity |
| title_full_unstemmed | Manipulating nonlinear emission and cooperative effect of CdSe/ZnS quantum dots by coupling to a silver nanorod complex cavity |
| title_short | Manipulating nonlinear emission and cooperative effect of CdSe/ZnS quantum dots by coupling to a silver nanorod complex cavity |
| title_sort | manipulating nonlinear emission and cooperative effect of cdse zns quantum dots by coupling to a silver nanorod complex cavity |
| topic | DRNTU::Science::Physics |
| url | https://hdl.handle.net/10356/97679 http://hdl.handle.net/10220/19597 |
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