Plasmonic engineering of spontaneous emission from silicon nanocrystals

Goffard, Julie; Gérard, Davy; Miska, Patrice; Baudrion, Anne-Laure; Déturche, Régis; Plain, Jérôme

doi:10.1038/srep02672

Cited by 40 publications

(40 citation statements)

References 30 publications

(35 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This determines the spontaneous emission rate Γ( )~( , ) (2,3). In particular, structures such as photonic crystal cavities (4,5), micropillar resonators (6,7), plasmonic films, nanoparticles (8,9) and waveguiding nanostructures (10) have been the subject of numerous studies in this context.…”

mentioning

confidence: 99%

Spontaneous Emission inside a Hyperbolic Metamaterial Waveguide

et al. 2017

View full text Add to dashboard Cite

The ability to control the rate of spontaneous emission via the design of nanostructured materials with appropriate electromagnetic properties is important in the development of novel fast sources of incoherent illumination, single photon emitters for quantum optical applications, laser physics and de-excitation of electronic states leading to photodegradation in organic materials. Here, for an emitter placed inside a hyperbolic metamaterial slab of finite thickness comprised of an array of gold nanorods, we experimentally demonstrate an enhancement of the fluorescence coupled to

show abstract

mentioning

confidence: 99%

Spontaneous Emission inside a Hyperbolic Metamaterial Waveguide

et al. 2017

View full text Add to dashboard Cite

show abstract

“…SPR in nanostructures is called localized surface plasmon resonance (LSPR). Metal nanostructures exhibiting LSPR have widely been used to modify excitation or emission rates of nearby emitters, leading to either enhancement or quenching of the luminescence . The LSPR is an effect due to the collective oscillation of electrons on the metal nanoparticles, which may have either beneficial or deleterious effects, depending on the position of the SPR peak and the distance of the luminophore from the metal surface.…”

Section: Strategies Beyond a Chemical Methodsmentioning

confidence: 99%

“…However, if QDs are too close to the metal, quenching of luminescence will occur. Thus plasmon‐controlled fluorescence can be achieved in patterned metal nanostructures by controlling the shape of and distance between the nanostructures (Figure c) …”

Section: Strategies Beyond a Chemical Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Tuning the Luminescence of Phosphors: Beyond Conventional Chemical Method

Bai

Tsang

Hao

2014

Advanced Optical Materials

134

View full text Add to dashboard Cite

thermoluminescence (TL), and so on. [ 2 ] Nowadays, a large number of phosphors have been synthesized and developed, each one having its own characteristic emission wavelength, bandwidth, and luminescence lifetime. Here, the lifetime normally means the time in which the emission intensity decays to 1/ e . Moreover, phosphors have been extensively utilized in many areas, both scientifi c research and practical applications. For instance, phosphor-converted fl uorescent lamps and white light-emitting devices (LEDs) have been used as light sources in a widespread range of daily life and industrial applications. [ 3 ] CL and EL phosphors have been applied to traditional or modern display devices presenting visual information. [ 4 ] In the past few decades, fl uorescent nanoparticles, such as quantum dots (QDs) [ 5 ] and lanthanide (Ln) ion-doped nanocrystals, [ 6 ] have attracted considerable attention and showed great promise in fl uorescent probes, biosensing, bioimaging, therapies, and optoelectronic devices. [ 7 ] The ability to tune the luminescence properties of phosphors is highly desired in the optical materials community. [ 8 ] For various applications such as solid-state lasers, bioimaging, optical sensing, and display devices, precise control over the luminescence properties is essential for optimizing the performance and processing of optical devices and systems. Tuning luminescence is also of great signifi cance for fundamental studies of the luminescence mechanisms of phosphors. In general, tuning luminescence in the visible region is popularly known as varying the emission colour and brightness obtained by the naked eye. Broadly speaking, tuning luminescence changes the emission intensity, wavelength, bandwidth, luminescence decay or lifetime, and polarization.Numerous studies have extensively focused on tuning the luminescence of phosphors by conventional chemical ways, typically changing chemical compositions, crystal structure, phase, nanocrystal size, surface groups, and so on. [ 9 ] Comparatively, there have been less results that show the tunable luminescence of phosphors through physical methods. So far, few attempts have been made to provide a comprehensive coverage of the strategies pertaining to this emerging research fi eld and a broad overview of research advances in diverse areas of application. In this review, chemically driven luminescence tuning is Tuning the luminescence of phosphors is extremely important in controlling and processing light for active components of light sources, optical sensing, display devices, and biomedicine. So far, conventional chemical approaches have routinely been employed to modify the luminescence during the phosphor's synthesis. It is interesting to broaden the modulation of luminescence by physical methods, such as electric fi eld, magnetic fi eld, mechanical stress, temperature, photons, ionizing radiation, and so on. Since some physical methods may provide unusual routes to tune the luminescence in in-situ, real-time, dynamical and reversible mann...

show abstract

“…13,14,15,16,17 In contrast, colloidal Si NCs coupled to plasmons have been scarcely studied in spite of their importance in applications such as in-vivo bioimaging 18 and printable optoelectronics. 19,20 The development of such systems is still challenging due to the difficulty of synthesis of high quality Si NCs with bright emission in biological transparent windows (700-1200 nm) and colloidal stability in aqueous solution.…”

mentioning

confidence: 96%

Plasmon-Enhanced Emission Rate of Silicon Nanocrystals in Gold Nanorod Composites

et al. 2015

View full text Add to dashboard Cite

We develop colloidal nanocomposites consisting of coupled light-emitting Si nanocrystals (NCs) and Au nanorods, and systematically investigate their structural and photoluminescence (PL) properties, which demonstrate significant enhancement of spontaneous emission rate with suppressed non-radiative quenching. In addition, through a comparison of the polarization dependence of PL and scattering intensities of single nanocomposites, we successfully demonstrate that the emission from Si NCs coupled to Au nanorods is highly polarized along the major axis of nanorods. The experimental results in combination with rigorous simulations of dipolar emission in the vicinity of Au nanorods enable us to demonstrate a ~3 times enhancement of the quantum efficiency at the peak of the NC emission. The Si-based active

show abstract

Plasmonic engineering of spontaneous emission from silicon nanocrystals

Cited by 40 publications

References 30 publications

Spontaneous Emission inside a Hyperbolic Metamaterial Waveguide

Spontaneous Emission inside a Hyperbolic Metamaterial Waveguide

Tuning the Luminescence of Phosphors: Beyond Conventional Chemical Method

Plasmon-Enhanced Emission Rate of Silicon Nanocrystals in Gold Nanorod Composites

Contact Info

Product

Resources

About