Controlled emission from dye saturated single and coupled microcavities

Dwivedi, V.K.; Kannan, Pradeesh; Prakash, G. Vijaya

doi:10.1016/j.apsusc.2010.11.048

Cited by 24 publications

(33 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Typically, the fabrication of an IO hybrid thin film is from chemical synthesis, which is followed by spin coating. The direct deposition and intercalation of organic moiety into layered host were also recently established . Recently, growth of 3D perovskite nanorods within an IR‐transparent nanoporous silicon template prepared using chemical vapor deposition (CVD) was reported .…”

Section: Introductionmentioning

confidence: 99%

“…[7,[13][14][15][16] Another method to fabricate ap hysicalc omposite is the space-filling of an anotemplate (porous matrix) with another material to improve and/orm odify the physical, structural, and opto/electrical properties.E xamples are inorganic fibers (such as carbon nanotubes) embeddedi np olymers,w hich yields high mechanical stability [1,3,5] or composites obtained by embedding inorganic/organic compounds into the photonic structures (wavelength-ordered periodic structures) for weak and strong light-matter interactions. [10,17] Particularly silicon technology has matured enough to be applied in the optoelectronic industry as photovoltaics,s ensors,a nd other passive/active optical devices. [17,18] Having such aw ide range of applications,p orous silicon would be an excellent host for nanocomposites;t his idea could pave the way to new device applications.…”

Section: Introductionmentioning

confidence: 99%

“…[10,17] Particularly silicon technology has matured enough to be applied in the optoelectronic industry as photovoltaics,s ensors,a nd other passive/active optical devices. [17,18] Having such aw ide range of applications,p orous silicon would be an excellent host for nanocomposites;t his idea could pave the way to new device applications.…”

Section: Introductionmentioning

confidence: 99%

“…Thed irect depositiona nd intercalationo fo rganic moiety into layered host were also recently established. [17][18][19][20] Recently,g rowtho f3 Dp erovskite nanorodsw ithin an IRtransparent nanoporous silicon templatep repared using chemical vapor deposition( CVD) was reported. [21] However, for complete space filling, growth, and nucleation on the nanoscale,e lectrochemical deposition is more suitable and very few reportsa re available because of fabrication issues.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Silicon‐Based Inorganic–Organic Hybrid Nanocomposites for Optoelectronic Applications

2017

View full text Add to dashboard Cite

A nanocomposite consisting of a unique combination of optically active materials, that is, an inorganic–organic (IO) layered hybrid and porous silicon (PS), is prepared using a simple but effective three‐step electrochemical method. X‐ray diffraction, energy‐dispersive X‐ray spectroscopy, and photoluminescence spectral analysis suggest that the IO hybrid (R‐MX4‐type 2D perovskite, where R represents an organic compound, M a divalent metal ion, and X a halide) is conveniently incorporated into the interstitial spaces of nanoporous silicon. The IO‐based 2D perovskite emits a strong and narrow room‐temperature exciton line at 520 nm due to effects related to dielectric confinement. Similarly, n‐type porous silicon emits in a broad range in the deep‐red region at 700 nm, which is attributable to the quantum confinement effects related to the nanoporosity in silicon. Because of the contributions from both entities, the completely space‐filled IO–PS nanocomposite shows an orange–yellow emission. The proposed methodology can be easily extended to a large number of such IO–PS functional nanocomposites and is thus expected to be used in optoelectronic applications such as light‐emitting diodes (LEDs), solar cells, and other optical elements.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Silicon‐Based Inorganic–Organic Hybrid Nanocomposites for Optoelectronic Applications

2017

View full text Add to dashboard Cite

show abstract

“…25 Um dos poucos trabalhos com um número reduzido de períodos (4 períodos de silício poroso em cada espelho) resultou em um fator-Q ~ 47 ( 0 ~ 717 nm). 100 Na região do NIR encontramos microcavidades com fatores-Q iguais a: 310 ( 0 = 1540 nm), 101 171 ( 0 = 1544 nm) 102 , 62 ( 0 = 1619 nm). 103 Nesses casos, fatores-Q maiores também foram obtidos graças a um maior número de períodos em cada espelho.…”

Section: Transmissão óPtica Das Mcsunclassified

Microcavidades ópticas à base de silício: projeto, confecção e propriedades

Gallo¹

View full text Add to dashboard Cite

Nanoscale Photoluminescence Manipulation in Monolithic Porous Silicon Oxide Microcavity Coated with Rhodamine‐Labeled Polyelectrolyte via Electrostatic Nanoassembling

Chen

Robbiano

Paternò

et al. 2021

Advanced Optical Materials

View full text Add to dashboard Cite

Porous silicon (PSi) is a promising material for future integrated nanophotonics when coupled with guest emitters, still facing challenges in terms of homogenous distribution and nanometric thickness of the emitter coating within the silicon nanostructure. Herein, it is shown that the nanopore surface of a porous silicon oxide (PSiO2) microcavity (MC) can be conformally coated with a uniform nm‐thick layer of a cationic light‐emitting polyelectrolyte, e.g., poly(allylamine hydrochloride) labeled with Rhodamine B (PAH‐RhoB), leveraging the self‐tuned electrostatic interaction of the positively‐charged PAH‐RhoB polymer and negatively‐charged PSiO2 surface. It is found that the emission of PAH‐RhoB in the PSiO2 MC is enhanced (≈2.5×) and narrowed (≈30×) at the resonant wavelength, compared with that of PAH‐RhoB in a non‐resonant PSiO2 reference structure. The time‐resolved photoluminescence analysis highlights a shortening (≈20%) of the PAH‐RhoB emission lifetime in the PSiO2 MC at the resonance versus off‐resonance wavelengths, and with respect to the reference structure, thereby proving a significant variation of the radiative decay rate. Remarkably, an experimental Purcell factor Fp = 2.82 is achieved. This is further confirmed by the enhancement of the photoluminescence quantum yield of the PAH‐RhoB in the PSiO2 MC with respect to the reference structure. Application of the electrostatic nanoassembling approach to other emitting dyes, nanomaterials, and nanophotonic systems is envisaged.

show abstract

Controlled emission from dye saturated single and coupled microcavities

Cited by 24 publications

References 18 publications

Silicon‐Based Inorganic–Organic Hybrid Nanocomposites for Optoelectronic Applications

Silicon‐Based Inorganic–Organic Hybrid Nanocomposites for Optoelectronic Applications

Microcavidades ópticas à base de silício: projeto, confecção e propriedades

Nanoscale Photoluminescence Manipulation in Monolithic Porous Silicon Oxide Microcavity Coated with Rhodamine‐Labeled Polyelectrolyte via Electrostatic Nanoassembling

Contact Info

Product

Resources

About