6533b7dafe1ef96bd126d80a
RESEARCH PRODUCT
Enhanced nanoscopy of individual CsPbBr3 perovskite nanocrystals using dielectric sub-micrometric antennas
Thomas WoodJean-benoît ClaudeSimona CheccucciSimona CheccucciDavid GrossoThomas DavidIván Mora-seróMarco AbbarchiMassimo GurioliMassimo GurioliAndrés F. Gualdrón-reyesAndrés F. Gualdrón-reyesAndrés F. Gualdrón-reyesIsaac SuárezIsaac SuárezJuan P. Martínez PastorDario BalestriLuc Favresubject
Detection sensitivityMaterials sciencelcsh:BiotechnologyCesium compoundsPhysics::Optics02 engineering and technologyDielectricPerovskiteLead compoundsperovskite solar cells01 natural sciences7. Clean energyCondensed Matter::Materials Sciencenanocrystalslcsh:TP248.13-248.650103 physical sciencesEnhanced absorptionSemiconductor quantum dotsElectronic transitionGeneral Materials Science[SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/MicroelectronicsAbsorption (electromagnetic radiation)perovskitePerovskite (structure)010302 applied physicsScatteringbusiness.industryGeneral Engineering021001 nanoscience & nanotechnologylcsh:QC1-999NanocrystalsNear field effectNanocrystalAtomic electron transitionQuantum dotOptoelectronicsTitanium dioxideAntennasDark-field scatteringsLow cost approachPhotonics0210 nano-technologybusinessOrganic moleculeslcsh:PhysicsBromine compoundsEmission enhancementdescription
We demonstrate an efficient, simple, and low-cost approach for enhanced nanoscopy in individual green emitting perovskite (CsPbBr3) nanocrystals via TiO2 dielectric nanoantenna. The observed three- to five-fold emission enhancement is attributed to near-field effects and emission steering promoted by the coupling between the perovskite nanocrystals and the dielectric sub-micrometric antennas. The dark-field scattering configuration is then exploited for surface-enhanced absorption measurements, showing a large increase in detection sensitivity, leading to the detection of individual nanocrystals. Due to the broadband spectral response of the Mie sub-micrometric antennas, the method can be easily extended to electronic transitions in other spectral regions, paving the way for absorption nanoscopy of many different quantum emitters from organic molecules to quantum dots.We demonstrate an efficient, simple, and low-cost approach for enhanced nanoscopy in individual green emitting perovskite (CsPbBr3) nanocrystals via TiO2 dielectric nanoantenna. The observed three- to five-fold emission enhancement is attributed to near-field effects and emission steering promoted by the coupling between the perovskite nanocrystals and the dielectric sub-micrometric antennas. The dark-field scattering configuration is then exploited for surface-enhanced absorption measurements, showing a large increase in detection sensitivity, leading to the detection of individual nanocrystals. Due to the broadband spectral response of the Mie sub-micrometric antennas, the method can be easily extended to electronic transitions in other spectral regions, paving the way for absorption nanoscopy of many different quantum emitters from organic molecules to quantum dots.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-02-01 |