Tunable Properties of Surface Plasmon Resonances: The Influence of Core–Shell Thickness and Dielectric Environment

Pathak, Nilesh Kumar; Ji, Alok; Sharma, R. P.

doi:10.1007/s11468-014-9677-4

Cited by 32 publications

(13 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where v f is the Fermi velocity of electron in noble MNPs, 1/γ bulk =31×10 −15 s (for silver), c=1 (for isotropic scattering) [36]. Metallic nanoparticles (silver, gold, aluminium and copper) strongly support the SPR mode in different regime of electromagnetic spectrum.…”

Section: Methods Scattering and Absorption By Spherical Metal Nanopartmentioning

confidence: 99%

Study of Broadband Tunable Properties of Surface Plasmon Resonances of Noble Metal Nanoparticles Using Mie Scattering Theory: Plasmonic Perovskite Interaction

Pathak

Sharma

2015

Plasmonics

Self Cite

View full text Add to dashboard Cite

We suggest semi-analytical approach to study the optical properties of noble metal nanoparticles and their interaction to the perovskite material (methyl ammonia lead halide: CH 3 NH 3 PbI 3 ). Metal nanoparticles embedded in perovskite matrix exhibits broadband surface plasmon resonances, and the tunability of these plasmonic resonances is highly sensitive to particle size. The calculation of optical cross section have been done using Mie scattering theory which is applicable to arbitrary size and spherical-shape metal nanoparticles. We have taken five different radii ranging from 15 to 100 nm to understand the plasmonic resonances and its spectral width in the wavelength range 300 to 800 nm. Out of these noble metal nanoparticles, silver have highest scattering efficiency nearly of the order of 18 for the case of 15 nm radii at resonance wavelength 613 nm. Our finding reveals a new concept to understand the applications of plasmonic resonances in order to enhance the photon absorption inside the thin film of perovskite.

show abstract

Section: Methods Scattering and Absorption By Spherical Metal Nanopartmentioning

confidence: 99%

Study of Broadband Tunable Properties of Surface Plasmon Resonances of Noble Metal Nanoparticles Using Mie Scattering Theory: Plasmonic Perovskite Interaction

Pathak

Sharma

2015

Plasmonics

Self Cite

View full text Add to dashboard Cite

show abstract

“…Plasmonic properties of metal nanoparticles have generated a great interest among the material researchers in the recent years and have attracted them to understand the physics behind it for applying the same in various fields. The optical properties of metal nanoparticles are highly dependent on its morphology and the surrounding medium [1][2][3][4]. These optical properties include scattering, absorption and extinction cross section which are obtained by solving the Maxwell's equation after the interaction of light with the nanogeometries.…”

Section: Introductionmentioning

confidence: 99%

Plasmonic Resonances and Their Application to Thin-Film Solar Cell

Pathak¹,

Kumar²,

Sharma³

2018

Emerging Solar Energy Materials

Self Cite

View full text Add to dashboard Cite

This chapter furnishes the plasmonic properties of metal nanostructure and its application to thin-film solar cell. Plasmonics is an emerging branch of nanooptics where light metal interaction in subwavelength domain is studied. Metal supports surface plasmon resonance that has tunable signature, which depends on the morphology as well as surrounding media. These plasmonic resonances can be tuned in a broader range of solar spectra by changing several parameters such as size, shape and medium. Moreover, metals show scattering properties that could be utilized to enhance optical path length of photon inside the thin film of solar device. The chapter mainly focusses on the study of plasmonic resonance of smaller-and larger-sized metal nanoparticle using semi-analytical as well as numerical approach. For the estimation of optical properties like extinction spectrum and field profile of larger-sized nanoparticle, finite-difference time-domain (FDTD) method is used. The field distribution in both silver and gold nanoparticle cases has been plotted in 'on' resonance condition, which has a broader range of applications.

show abstract

“…Plasmonics is the emerging branch of nanophotonics which deals the coupling of light to the collective oscillation of electrons inside the metal nanoparticles. The coupling of light to the metal nanoparticles produces resonances under specific condition known as surface plasmon resonance (SPR) that has tremendous applications [1][2][3][4][5]. The resonant interaction between them will localize the electromagnetic field near the meal surface and drastically enhances the optical scattering phenomenon.…”

Section: Introductionmentioning

confidence: 99%

A Perspective on Plasmonics within and beyond the Electrostatic Approximation

Pathak¹,

Parthasarathi²,

Pandey³

et al. 2018

Plasmonics

View full text Add to dashboard Cite

Plasmonic is an emerging branch of nanophotonics wherein the electromagnetic properties of nanoparticles are studied for variety of applications. The optics of nanoparticles is studied in terms of surface plasmon resonances and optical cross section. Initially the first principle approach has been used to study the plasmonic fundamentals known as electrostatic approach. Under this approach, various parameters are taken into account to observe the electromagnetic properties of plasmonic nanogeometries. This electrostatic model is only used to analyze the optical signature of smaller size plasmonic geometries. Therefore, for the estimation of optical properties of larger size nanoparticle numerical model (Discrete Dipole Approximation) has been used. The observed surface plasmon resonances could be useful in sensing field, SERS signal detection and thin film solar cell application.

show abstract

Tunable Properties of Surface Plasmon Resonances: The Influence of Core–Shell Thickness and Dielectric Environment

Cited by 32 publications

References 19 publications

Study of Broadband Tunable Properties of Surface Plasmon Resonances of Noble Metal Nanoparticles Using Mie Scattering Theory: Plasmonic Perovskite Interaction

Study of Broadband Tunable Properties of Surface Plasmon Resonances of Noble Metal Nanoparticles Using Mie Scattering Theory: Plasmonic Perovskite Interaction

Plasmonic Resonances and Their Application to Thin-Film Solar Cell

A Perspective on Plasmonics within and beyond the Electrostatic Approximation

Contact Info

Product

Resources

About