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

Kohnehpoushi, Saman; Eskandari, Mehdi; Ahmadi, Vahid; Yousefirad, Mansooreh; Nabavi, Elham

doi:10.1016/j.photonics.2016.06.003

Cited by 9 publications

(2 citation statements)

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“…Accordingly, Schrödinger equations are solved and eigenfunctions and eigenvalues extracted. The dielectric function of CdSe QDs with the size distribution of 3-5 nm as calculated in our previous study [38] is used in the present work. In this regard, the three-dimensional FDTD is used for solving Maxwell equations.…”

Section: Model and Methodsmentioning

confidence: 99%

“…The size and shape of the Ag nanoparticles are key factors for the formation of quadrupole and dipole surface plasmon resonance modes around the excitation and emission wavelengths of the QDs. In our previous works, plasmonic field absorption improvement in CdSe-QD-sensitized ZnO nanorods [38] and CdSe-QD-sensitized ZnO thin films as photoanodes [39] was studied numerically by Ag nanoparticles using the finite differential time domain (FDTD) model.…”

Section: Introductionmentioning

confidence: 99%

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Numerical calculation of visible light absorption enhancement of CdSe-quantum dot-sensitized TiO₂ nanorod periodic array as photoanode

Kohnehpoushi

Eskandari

Nejand

et al. 2017

J. Phys. D: Appl. Phys.

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Light absorption enhancement in a CdSe-quantum dot (QD)-sensitized TiO2 nanorod periodic array-based photoanode is calculated by the finite differential time domain (FDTD) model through optimizing the height, diameter, and periodic space between TiO2 nanorods. Results show that light absorption in the CdSe-QD-sensitized TiO2 nanorods is enhanced at the visible wavelength range and the absorption edge is shifted toward higher wavelengths as a result of decreasing the height and increasing the diameter of the TiO2 nanorods. Consequently, the equivalent bandgap of the CdSe-QD-sensitized TiO2 nanorod photoanode was decreased. Also, absorption spectra indicate that the position of the absorption peak related to TiO2 has a redshift with increasing periodic space between the TiO2 nanorods, suggesting a decrease in the bandgap of TiO2. In addition, results show that for TiO2 nanorod heights lower than 300 nm, light absorption in the visible region is considerably enhanced as the periodic space is reduced from 400 nm to 100 nm. In comparison, for TiO2 nanorod heights larger than 300 nm, light absorption is considerably enhanced. Finally, it is found from absorption spectra that coupling optical modes of TiO2 nanorods and CdSe QDs are enhanced by increasing the diameter and decreasing the height and periodic space between the TiO2 nanorods. As a result, the light absorption is increased in the photoanodes at the visible region, leading to an improvement in the performance of the photoanode at visible light.

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Section: Model and Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical calculation of visible light absorption enhancement of CdSe-quantum dot-sensitized TiO₂ nanorod periodic array as photoanode

Kohnehpoushi

Eskandari

Nejand

et al. 2017

J. Phys. D: Appl. Phys.

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CdSe and Ag2S quantum dots: synthesis, effects of doping, and applications

Masmali

Osman

2023

Quantum Dots

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Experimental investigation on the plasmonic blended nanofluid for efficient solar absorption

Duan

Zheng

et al. 2019

Applied Thermal Engineering

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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

Cited by 9 publications

References 28 publications

Numerical calculation of visible light absorption enhancement of CdSe-quantum dot-sensitized TiO₂ nanorod periodic array as photoanode

Numerical calculation of visible light absorption enhancement of CdSe-quantum dot-sensitized TiO₂ nanorod periodic array as photoanode

CdSe and Ag2S quantum dots: synthesis, effects of doping, and applications

Experimental investigation on the plasmonic blended nanofluid for efficient solar absorption

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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

Cited by 9 publications

References 28 publications

Numerical calculation of visible light absorption enhancement of CdSe-quantum dot-sensitized TiO2 nanorod periodic array as photoanode

Numerical calculation of visible light absorption enhancement of CdSe-quantum dot-sensitized TiO2 nanorod periodic array as photoanode

CdSe and Ag2S quantum dots: synthesis, effects of doping, and applications

Experimental investigation on the plasmonic blended nanofluid for efficient solar absorption

Contact Info

Product

Resources

About

Numerical calculation of visible light absorption enhancement of CdSe-quantum dot-sensitized TiO₂ nanorod periodic array as photoanode

Numerical calculation of visible light absorption enhancement of CdSe-quantum dot-sensitized TiO₂ nanorod periodic array as photoanode