Halide‐Perovskite Resonant Nanophotonics

Abstract

Halide perovskites have emerged recently as promising materials for many applications in photovoltaics and optoelectronics. Recent studies of their optical properties suggest many novel opportunities for a design of advanced nanophotonic devices due to low-cost fabrication, high values of the refractive index, existence of excitons at room temperatures, broadband bandgap tunability, high optical gain and nonlinear response, as well as simplicity of their integration with other types of structures. This paper provides an overview of the recent progress in the study of optical effects originating from nanostructured perovskites, including their potential applications.

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.…”

Active meta-optics and nanophotonics with halide perovskites

“…Because of a direct bandgap, strong excitons, high defect tolerance, and outstanding color tunability of halide perovskites, they are used actively for light emitting devices (LEDs) 42 . Best performing perovskite-based LEDs demonstrate the efficiencies higher than 20% 10,43 , and this number can be improved further by smart nanophotonic designs 34 , as was demonstrated for other LED materials 44 .…”

“…Moreover, in situ chemical variation of the perovskites band gap 24,25 and, thus, the spectrum of their luminescence, opens up unprecedented opportunities for reconfigurable nanophotonic devices not achievable with the use of the conventional GaAs platform. As a result, halide perovskite nanoparticles 26 , nanowires 27,28 , microdisks 29 , microplates 30 , nanoscale gratings 31 , and metasurfaces 32,33 are easy to fabricate and process, and they can become a convenient and cheap part of optical circuitry in the near future 34 . Nevertheless, the existing silicon-based platform is much more developed for on-chip integrated photonics 35 , but it is expected to be outperformed by the perovskites in the future.…”

“…7), slightly larger perovskite nanoparticles are prospective for lasing applications. Indeed, owing to the high QY 85 and ability to support confined optical modes 34 , halide perovskite based nanoparticles are also very prospective for creation of microand nanolasers operating at room temperature 82 . The first successful demonstration of this concept with sub-micron particles was carried out with perfectly spherical CsPbBr 3 particles with a diameter of about 780 nm 56 .…”

Enhanced emission from CH3NH3PbBr3 perovskite films by graphene quantum dot modification

“…Besides the great success in photovoltaics, their unique optical and electrical properties make hybrid perovskites promising candidates for next generation light emitting diodes (LEDs) [19][20][21][22][23][24][25][26]. Many efforts have been made to enhance the luminescence from hybrid perovskites, such as passivating defects [27][28][29][30][31], constructing multiple quantum wells [30], utilizing plasmonic structures [31,32], and so on. Among these methods, growth of dense and low-defect films is most essential [33,34].…”