Resonant silicon nanoparticles for enhancement of light absorption and photoluminescence from hybrid perovskite films and metasurfaces

Abstract

Recently, hybrid halide perovskites have emerged as one of the most promising types of materials for thin-film photovoltaic and light-emitting devices because of their low-cost and potential for high efficiency. Further boosting their performance without detrimentally increasing the complexity of the architecture is critically important for commercialization. Despite a number of plasmonic nanoparticle based designs having been proposed for solar cell improvement, inherent optical losses of the nanoparticles reduce photoluminescence from perovskites. Here we use low-loss high-refractive-index dielectric (silicon) nanoparticles for improving the optical properties of organo-metallic perovskite (MAPbI 3 ) films and metasurfaces to achieve strong enhancement of photoluminescence as well as useful light absorption. As a result, we observed experimentally a 50% enhancement of photoluminescence intensity from a perovskite layer with silicon nanoparticles and 200% enhancement for a nanoimprinted metasurface with silicon nanoparticles on top. Strong increase in light absorption is also demonstrated and described by theoretical calculations. Since both silicon nanoparticle fabrication/deposition and metasurface nanoimprinting techniques are low-cost, we believe that the developed all-dielectric approach paves the way to novel scalable and highly effective designs of perovskite based metadevices.

Spectroscopy and Biosensing with Optically Resonant Dielectric Nanostructures

“…It has been also shown that Si NPs can increase the PL emission from MAPbI 3 perovskites . Figure c demonstrates the PL intensity spectra from hybrid Si NP & MAPbI 3 perovskite system (red curve) and from reference MAPbI 3 perovskite (black curve).…”

“…Copyright 2016, American Chemical Society; (b) Reproduced with permission . Copyright 2016, American Chemical Society; (c) Reproduced with permission . Copyright 2017, Royal Society of Chemistry; (d) Reproduced with permission …”

“…It has also been demonstrated that NPs and nanostructures made of such dielectric materials provide resonant electric and magnetic optical response, moderate light localization at the nanoscale, and strong inherent Raman scattering, which are not typical for plasmonic counterparts . Because of their distinct properties, RDNs have been proposed for high‐harmonic generation, photonic topological insulators, boosting the luminescence from quantum emitters such as NV‐centers in nanodiamonds, quantum dots, perovskites, dye molecules, and carbon nanotubes . In addition, resonant dielectric nanostructures have been used for scattering engineering, ultrafast switchers and modulators, optical interconnections on a chip, light trapping structures, colored metasurfaces, and enhanced Raman scattering .…”

Optical cooling of lead halide perovskite nanoparticles enhanced by Mie resonances

“…The perovskites also have a fairly high refractive index (2.0 -2.5 around exciton), which makes them promising for using in nanophotonics applications due to the ability of a single dielectric resonant nanoparticle (NP) to achieve strong resonant response and light localization, 10 whereas the excitation of resonances in the nanocavities results in sufficient improvement of emission rate. 11 The combination of nanophotonics designs 12 with the variety of functional properties of the halide perovskites 13 already demonstrated great performance in photoluminescence efficiency boost from metasurfaces, [14][15][16] tunability of luminescence 17 and optical resonances, 18 and outstanding properties of microlasers. 7,19,20 In this work, we theoretically propose enhanced optical cooling in a resonant perovskite Mie resonances and simple fabrication processes 12 for the studied material will pave the way for the nanoscale highly efficient cooling devices.…”

Microwave plasma-assisted silicon nanoparticles: cytotoxic, molecular, and numerical responses against cancer cells

“…4 For various applications, it's necessary to obtain well characterized nanocrystals of SiNPs as varying the size of nanomaterials can change their fundamental properties and generate various properties such as electronic, optical, magnetic, and catalytic properties, associated with their nanoscale or quantum-scale dimensions. 5 There is a wide range of applications for silicon and its nanoparticles, many of which are well-established, such as bioimaging, 6,7 inorganic/organic light emitters, 8,9 solar cells, 10,11 dye-sensitized solar cells, 12 lithium-ion batteries, 13,14 corrosion shields, 15 anti-static lms and coatings, 16 energy storage 17 and catalysts. 18 To get nanostructures in the form of nanoparticles, various physicochemical methods have been adopted, such as the chemical solution method, 19 sol-gel method, 20 hydrothermal method, 21 ball milling method, 22 one-pot synthesis, 23 electrochemical etching, 24 hydrogen-terminated solution process, 25 reverse micelle process 26 and the micro-emulsion technique.…”