Effects of morphology, diameter and periodic distance of the Ag nanoparticle periodic arrays on the enhancement of the plasmonic field absorption in the CdSe quantum dots
| Autor: | Vahid Ahmadi, Saman Kohnehpoushi, Elham Nabavi, Mansooreh Yousefirad, Mehdi Eskandari |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Field (physics) business.industry Finite-difference time-domain method Nanoparticle Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials Wavelength Hardware and Architecture Quantum dot Quadrupole Optoelectronics Electrical and Electronic Engineering 0210 nano-technology Absorption (electromagnetic radiation) business Plasmon |
| Zdroj: | Photonics and Nanostructures - Fundamentals and Applications. 21:52-59 |
| ISSN: | 1569-4410 |
| DOI: | 10.1016/j.photonics.2016.06.003 |
| Popis: | In this work, the numerical calculations of plasmonic field absorption of Ag nanoparticles (Ag NPs) periodic arrays in the CdSe quantum dot (QD) film are investigated by the three-dimensional finite difference time domain (FDTD). Diameter (D), periodic distance (P), and morphology effects of Ag NPs are investigated on the improvement of the plasmonic field absorption in CdSe QD film. Results show that plasmonic field absorption in CdSe QD film is enhanced with reduction of D of Ag NPs until 5 nm and reduces thereafter. It is observed that with raising D of Ag NPs, optimum plasmonic field absorption in CdSe QD film is shifted toward the higher P. Moreover, with varying morphology of Ag NPs from spherical to cylindrical, cubic, ringing and pyramid, the plasmonic field absorption is considerably enhanced in CdSe QD film and position of quadrupole plasmon mode (QPPM) is shifted toward further wavelength. For cylindrical Ag NPs, the QPPM intensity increased with raising height (H) until 15 nm and reduces thereafter. |
| Databáze: | OpenAIRE |
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