Förster resonance energy transfer in surface plasmon coupled color conversion processes of colloidal quantum dots
| Autor: | Chia-Chun Ni, Shung-Hsiang Wu, Ruei-Nan Wu, C C Yang, Chien-Yu Chen, Sheng-Yang Kuo, Zong-Han Li |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
business.industry Surface plasmon Energy conversion efficiency 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics 010309 optics Coupling (electronics) Light intensity Förster resonance energy transfer Optics Quantum dot Chemical physics 0103 physical sciences Molecule Surface charge 0210 nano-technology business |
| Zdroj: | Optics express. 29(3) |
| ISSN: | 1094-4087 |
| Popis: | Förster resonance energy transfer (FRET) from a green-emitting quantum dot (GQD) into a red-emitting quantum dot (RQD) is an important mechanism in a multiple-color conversion process, particularly under the surface plasmon (SP) coupling condition for enhancing color conversion efficiency. Here, the dependencies of FRET efficiency on the relative concentrations of GQD and RQD in their mixtures and their surface molecule coatings for controlling surface charges are studied. Also, the SP coupling effects induced by two kinds of Ag nanoparticles on the emission behaviors of GQD and RQD are demonstrated, particularly when FRET is involved in the coupling process. FRET efficiency is reduced under the SP coupling condition. SP coupling can enhance the color conversion efficiency of either GQD or RQD. The combination of SP coupling and FRET can be used for controlling the relative converted light intensities in a multiple-color conversion process. |
| Databáze: | OpenAIRE |
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