Solution processed microcavity structures with embedded quantum dots

Valappil, Nikesh; Luberto, M.; Menon, Vinod M.; Zeylikovich, I.; Gayen, Taposh; Franco, J.; Das, B. B.; Alfano, R. R.

doi:10.1016/j.photonics.2007.07.003

Cited by 30 publications

(26 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was reported earlier for a high concentration of CdSe/ZnS QDs [22,23] that the photoluminescence decay time of the QDs in a microcavity was $150 ps. For QDs on a bare glass substrate or embedded in PVK without a bandgap structure was found to be $1000 ps and $400 ps, respectively [22,23].…”

Section: Polymer Microcavity With Defect Layer Doped Withmentioning

confidence: 97%

“…The details of structure preparation are reported in [22][23]. The DBRs are fabricated by spin coating alternating quarter wavelength thick polymer layers with different refractive indices n [poly-vinylcarbazole (PVK) with n ¼ 1.683 and poly-acrylic acid (PAA) with n ¼ 1.428 at 600 nm] [22,23]. Solvents are chosen such that the solvent for one polymer does not dissolve the other polymer.…”

Section: Polymer Microcavity With Defect Layer Doped Withmentioning

confidence: 99%

“…For QDs on a bare glass substrate or embedded in PVK without a bandgap structure was found to be $1000 ps and $400 ps, respectively [22,23].…”

Section: Polymer Microcavity With Defect Layer Doped Withmentioning

confidence: 99%

“…(1) chiral microcavity made of monomeric and/or oligomeric planar-aligned cholesteric liquid crystals (CLCs) [19][20][21] and (2) polymer microcavity with a defect layer between two DBRs [22][23]. These two types of microcavity are robust and simple in fabrication.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Organic photonic bandgap microcavities doped with semiconductor nanocrystals for room-temperature on-demand single-photon sources

Lukishova

Bissell

Menon

et al. 2009

Journal of Modern Optics

View full text Add to dashboard Cite

We report the first experimental observation of fluorescence from single semiconductor nanocrystals (colloidal quantum dots) in microcavities. In these room-temperature experiments we observed photon antibunching from single CdSe nanocrystals doped into a chiral one-dimensional photonic bandgap liquid-crystal microcavity. The chirality resulted in high-purity, circular polarization of definite handedness of the emitted single photons. We also report the fabrication of chiral microcavities for telecom wavelengths doped with PbSe nanocrystals as well as a solution-processed-polymer microcavity with a defect layer doped with CdSe nanocrystals between two distributed Bragg reflectors. These systems with their low host fluorescence background are attractive for on-demand single-photon sources for quantum information and communication.

show abstract

Section: Polymer Microcavity With Defect Layer Doped Withmentioning

confidence: 97%

Section: Polymer Microcavity With Defect Layer Doped Withmentioning

confidence: 99%

“…For QDs on a bare glass substrate or embedded in PVK without a bandgap structure was found to be $1000 ps and $400 ps, respectively [22,23].…”

Section: Polymer Microcavity With Defect Layer Doped Withmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Organic photonic bandgap microcavities doped with semiconductor nanocrystals for room-temperature on-demand single-photon sources

Lukishova

Bissell

Menon

et al. 2009

Journal of Modern Optics

View full text Add to dashboard Cite

show abstract

“…Similar approach using alternating layers of spin coated polymers has been previously used to realize Bragg mirrors for bandedge lasing, electro optical switching, enhanced spontaneous emission and microcavity lasing [29][30][31][32].…”

mentioning

confidence: 99%

Luminescence properties of a Fibonacci photonic quasicrystal

Passias¹,

Valappil²,

Shi³

et al. 2009

Opt. Express

View full text Add to dashboard Cite

We report the realization of an active one-dimensional Fibonacci photonic quasi-crystal via spin coating. Manipulation of the luminescence properties of an organic dye embedded in the quasi-crystal is presented and compared to theoretical simulations. The luminescence occurs via the pseudo-bandedge mode and follows the dispersion properties of the Fibonacci crystal. Time resolved luminescence measurement of the active structure shows faster spontaneous emission rate, indicating the effect of the large photon densities available at the bandedge due to the presence of critically localized states. The experimental results are in excellent agreement with the theoretical calculations.

show abstract

Simple and Versatile Platforms for Manipulating Light with Matter: Strong Light–Matter Coupling in Fully Solution‐Processed Optical Microcavities

Strang,

Quirós‐Cordero,

Grégoire

et al. 2023

Advanced Materials

View full text Add to dashboard Cite

Planar microcavities with strong light–matter coupling, monolithically processed fully from solution, consisting of two polymer‐based distributed Bragg reflectors (DBRs) comprising alternating layers of a high‐refractive‐index titanium oxide hydrate/poly(vinyl alcohol) hybrid material and a low‐refractive‐index fluorinated polymer are presented. The DBRs enclose a perylene diimide derivative (b‐PDI‐1) film positioned at the antinode of the optical mode. Strong light–matter coupling is achieved in these structures at the target excitation of the b‐PDI‐1. Indeed, the energy‐dispersion relation (energy vs in‐plane wavevector or output angle) in reflectance and the group delay of transmitted light in the microcavities show a clear anti‐crossing—an energy gap between two distinct exciton‐polariton dispersion branches. The agreement between classical electrodynamic simulations of the microcavity response and the experimental data demonstrates that the entire microcavity stack can be controllably produced as designed. Promisingly, the refractive index of the inorganic/organic hybrid layers used in the microcavity DBRs can be precisely manipulated between values of 1.50 to 2.10. Hence, microcavities with a wide spectral range of optical modes might be designed and produced with straightforward coating methodologies, enabling fine‐tuning of the energy and lifetime of the microcavities‘ optical modes to harness strong light–matter coupling in a wide variety of solution processable active materials.

show abstract

Solution processed microcavity structures with embedded quantum dots

Cited by 30 publications

References 20 publications

Organic photonic bandgap microcavities doped with semiconductor nanocrystals for room-temperature on-demand single-photon sources

Organic photonic bandgap microcavities doped with semiconductor nanocrystals for room-temperature on-demand single-photon sources

Luminescence properties of a Fibonacci photonic quasicrystal

Simple and Versatile Platforms for Manipulating Light with Matter: Strong Light–Matter Coupling in Fully Solution‐Processed Optical Microcavities

Contact Info

Product

Resources

About